12 best battery portable fan

Product description

O2 Cool 10-Inch Portable Fan with AC Adapter - 10" Diameter - 2 Speed - Carrying Handle, Adjustable Tilt Head, Foldable - Gray

• BATTERY -OPERATED PORTABLE FAN. You can cool off when you’re at home, work or outdoors with O2COOL’s 10-Inch Battery-Operated Portable Fan. Perfectly sized, it won’t take up much space and features a convenient folding design and a built-in handle for easy storage and transport.
• DURABLE CONSTRUCTION. Durably crafted using sturdy plastic construction for long-lasting strength and use, this portable fan boasts a patented fan blade design which extends the battery life while maximizing airflow.
• TWO-SPEED OPERATION. Featuring a powerful 10-inch blade, this fan offers high and low speeds to accommodate your needs. Both settings deliver refreshing air with minimal noise to prevent distractions. You can also adjust the tilt of the fan for directional airflow and ideal cooling comfort on hot, sticky days.
• EASY TO USE. Position fan face down, slide out the battery door and insert batteries following (+/-) marks, then replace door. Slide switch located on the side of fan to your preferred setting. To operate fan using AC power (120-240 VAC, 50-60 Hz), use supplied adapter only.
• EMERGENCY/DISASTER PREPAREDNESS. Make sure you’re prepared the next time a power outage occurs due to a thunderstorm, hurricane, lightning or high winds. For added convenience, the fan runs on six D-cell batteries (not included) or you can plug it in using the included AC adapter. Inserting the adapter plug into the fan disconnects the installed batteries from the circuit.

User questions & answers

Question:	How loud is it
Answer:	Yes. They both have their own switch, so you can us the fan without the light being on.
Question:	battery life
Answer:	nice even sound
Question:	Is there a DC car adapter for this fan
Answer:	The breeze on low was ok. I'm a person who always runs warm so I had it on high the whole time. When it was on low, I could still feel a slight breeze.
Question:	how do you get it open to insert the batteries no directions
Answer:	It has a light hum. Not the type of white noise most fans put out.

Product description

【Strong but Quiet Desk Fan】This small but powerful desk fan has 3 speed settings and you can choose the airflow at your preference. The wind is very large owing to our newly designed motor. It also lowers the noise to 50dB.【Portable Fan with Timer】The timer feature allows you to turn off the fan after some time. The timer can be 1, 3 or 5 hours. No need to wake up to turn off this quiet fan.【USB Desk Fan & Battery Fan】This 5 inch desk fan works with 4 D-cell batteries (not included) or it can be powered by USB cable, which is ideal for camping, travel, power outages and emergency needs. Note: it is also compatible with carbon D battery, alkaline D battery or rechargeable NiMH battery.【Rotation and Portability】The 180° rotation design lets you take the fresh air directly to your face and get cool instantly. With the built-in handle, it is easy to carry it around. Great for travel, camping and other outdoor activities use.【100% Satisfaction Guaranteed】 This USB desk fan comes with a USB cable that can be used when connected to a power bank, car charger, computer, or a 5V wall USB charger. We also offer one year warranty for this small portable fan. If you have any questions, feel free to contact us through Amazon. We will provide free replacements or a full refund.

• 【Battey Operated Fan for Camping】This 5 inch battery fan works with 4 D-cell batteries (not included), which is ideal for camping, travel, power outages and emergency needs. There are 3 settings and the fan can last for 214 hours with low speed, 46 hours with medium speed, and 14 hours with high speed!
• 【Quiet Desk Fan with Timer】This small but powerful desk fan is very quiet owing to our newly designed motor which lowers the noise to 50dB. It's perfect for sleeping and working when you need a silent environment. This portable fan has a unique timer feature which can be set to 1, 3 or 5 hours. No need to wake up to turn off this quiet fan.
• 【Rotation and Portability】The 180° rotation design lets you take the fresh air directly to your face and get cool instantly. With the comvenient handle, it is easy to carry around. Great for travel, camping and other outdoor activities use.
• 【Battery Powered USB Fan】Except powered by D batteries, this fan can be a USB desk fan. It comes with a USB cable that can be used when connected to a power bank, car charger, computer, or a 5V wall USB charger. Note: it is also compatible with carbon D battery, alkaline D battery or rechargeable NiMH battery.
• 【100% Satisfaction Guaranteed】 We also offer one year warranty for this small portable fan. If you have any questions, feel free to contact us through Amazon. We will provide free replacements or a full refund.

User questions & answers

Question:	What kind of batteries do this take
Answer:	We will be happy to clear the confusion. The battery holder in the battery compartment comes out of the unit. It allows for 4 batteries to be installed in a square formation. The battery holder then gets placed back into the unit. If you have any other questions please do not hesitate to contact our consumer relations team by emailing us at [email protected]. Thank you.
Question:	Would this be good to use in a tent at an art fair all day long
Answer:	Thank you for your inquiry. If the car is off, this unit will not be able to draw power from the battery. If the car is running, this unit will still be drawing a small amount of power, but having the car idle for a while can kill the battery. If you have any other questions please do not hesitate to contact our consumer relations team by emailing us at [email protected]. Thank you.
Question:	What are the out side dimensions of this fan? Want to pack in a suitcase to take on a cruise
Answer:	Good question. This fan is fairly unobtrusive and may not be loud enough to create the white noise you are looking for. If you have any other questions please do not hesitate to contact our consumer relations team by emailing us at [email protected]. Thank you.
Question:	Can you use this continuously without the timer being on
Answer:	Yes, it is rather weak and does not oscillate. It will not disperse unpleasant odors. It is a personal-size fan--it only gives you a little air movement when things get stuffy or fetid : ).

Product description

Perfect for indoor or outdoor activities, O2COOL's 10-inch Battery-Operated Portable Fan can be used in the office, at school, on a picnic and especially during a power outage. It operates on six D-cell batteries (not included) or can be plugged in with its AC adapter, features high and low speeds, and boasts a patented fan blade design that extends the battery life while maximizing airflow. Cool by Design, this portable fan is also easy to carry with its built-in handle so you can take the cool with you.

• BATTERY-OPERATED PORTABLE FAN. With O2COOL’s 10-Inch Battery-Operated Portable Fan, you can cool off when you’re at home, work or outdoors. Perfectly sized, it won’t take up much space and features a convenient built-in handle for easy storage and transport
• DURABLE CONSTRUCTION. This portable fan is durably crafted using sturdy plastic construction for long-lasting strength and use. It also boasts a patented fan blade design which extends the battery life while maximizing airflow
• TWO-SPEED OPERATION. Featuring a powerful 10-inch blade, this fan offers high and low speeds to accommodate your needs. Both settings deliver refreshing air with minimal noise to prevent distractions. Number and Type of Alkaline Batteries: 6-D batteries
• EASY TO USE. Position fan face down, slide out the battery door and insert batteries following (+/-) marks, then replace door. Slide switch located on the side of fan to your preferred setting. To operate fan using AC power (120-240 VAC, 50-60 Hz), use supplied adapter only
• DUAL POWER SOURCES. For added convenience, the fan runs on six D-cell batteries (not included) or you can plug it in using the included AC adapter. Inserting the adapter plug into the fan disconnects the installed batteries from the circuit
• Fans are measured by the full size of their blade span (also called blade sweep), which is the diameter of the circle that you see when the fan blades are in motion. Or, in other words, fan blade span reaches from the tip of one fan blade to the tip of the blade directly across. As such, a 10" fan is actually larger than 10" when it includes the outer casing.

Product features

Treva 10 Inch Battery Operated Fan With AC Adapter

• BATTERY-OPERATED PORTABLE FAN : With the Treva 10-Inch Battery-Operated Portable Fan, you can cool off when you’re at home, work or outdoors. Perfectly sized, it won’t take up much space and features a convenient built-in handle for easy storage and transport
• DURABLE CONSTRUCTION : This portable fan is durably crafted using sturdy plastic construction for long-lasting strength and use. It also boasts a patented fan blade design which extends the battery life while maximizing airflow
• TWO-SPEED OPERATION : Featuring a powerful 10-inch blade, this fan offers high and low speeds to accommodate your needs. Both settings deliver refreshing air with minimal noise to prevent distractions. Number and Type of Alkaline Batteries: 6-D batteries
• EASY TO USE : Position fan face down, slide out the battery door and insert batteries following (+/-) marks, then replace door. Slide switch located on the side of fan to your preferred setting. To operate fan using AC power (120-240 VAC, 50-60 Hz), use supplied adapter only
• DUAL POWER SOURCES. For added convenience, the fan runs on six D-cell batteries (not included) or you can plug it in using the included AC adapter. Inserting the adapter plug into the fan disconnects the installed batteries from the circuit

Quiet, Powerful Cooling

• 🍉【POWERFUL WIND AND QUIETNESS】 The maximum rotating speed of the fan is 3200 rpm which is enough for personal use to keep you cool. Low and medium settings are decent and super quiet which ensure the peaceful flow of air. The fan works on the principle of more airflow, but less noise to give you a relieved sleep.
• 🍉【3-13 WORKING HOURS AND ADJUSTABLE 3 SPEEDS】The outdoor fan operates with 2200mAh Improved battery (type-18650) and can operate for 3-13 hours after a full charge. The speed of this portable desk fan can also be adjusted among low, medium, and high according to your demands.
• 🍉【PORTABLE AND COMPACT】It is trouble-free to put this small (4.1x1.6 X 5.9 inch, weight-7 ounces) and the exquisite rechargeable fan into a bag and carry it for outdoor events. Also, it can be used for indoor purposes if you need a portable fan to create flow in every corner of your premises.
• 🍉【SIDE AND INTERNAL LED LIGHT】 The blue internal LED lights infused in the fan make it even more advantageous and attractive to look at. The side light is quite bright and can be useful in the dark areas or if electricity is out. It is a perfect companion for any outdoor plans and traveling purpose.
• 🍉【USB POWERED FAN 】 This fan runs on 5 volts DC, which is the USB standard. You need to plug the fan into an USB port for power like an USB outlet, computer, laptop or power bank and so on. This handheld fan will work on 110 or 220 volts which can be carried to all over the world.

Product features

Fan for Indoor Use

Suitable for Outdoor Events

Long Battery Life-3 to 13 Hours

This compact travel fan has 3 to 13 hours running time per full charge and 500 charge-discharge cycles.

Mini Size and Lightweight

Product description

Honeywell Turbo on the Go Personal Fan. On the Go styling, take it with you! Fan folds into its handle for easy carrying.

• Small, portable personal fan: This small, battery operated or usb powered fan folds up for easy portability. With a three foot air circulation range & a handle for carrying or hanging, this small, compact fan makes it easy to stay cooler wherever you go.
• Feel the Power: Honeywell's TurboForce line of fans have an aerodynamic turbo design to maximize air movement, offering the power for intense personal cooling. The Turbo on the Go offers convenience of a small fan with power you can feel from 3 feet away
• Increase your comfort: Using fans for air circulation in your home can help Increase your comfort, and help reduce energy costs as well. Honeywell carries a range of tower fans, floor fans, and oscillating fans -- find one for every room in the house.
• Honeywell fans:The right fan helps cool you off & improves airflow in your room or home. Give your air conditioner & wallet a break by using fans to help reduce your energy consumption & costs. Honeywell carries a variety of fans to meet your home needs.
• Honeywell quality: Help Improve Air Circulation & Energy Savings in Your Home, Bedroom or Office With Honeywell Fans.

User questions & answers

Question:	Where do you insert the 4 batteries? I only see room for
Answer:	It is quite. I wouldn't be able to sleep with a loud fan. I used it in a cruise cabin with no problem.
Question:	Will this drain a car battery if I let it run while car parked during hot days
Answer:	The 10 inch w/ Duracells will run on Low a couple of weeks w/ 2-3 hrs daily use. For all night use on Low, 3-4 days with good batteries. High will run the batteries flat over a weekend. I recommend rechargeable batteries.
Question:	Need a small portable fan that I can use for sleep while traveling (white noise) comparable to the noise made by a box fan. Is it loud
Answer:	It is advertised at the top of the page: O2COOL Treva 10-Inch Portable Desktop Air Circulation Battery Fan-2 Speed-Compact Folding & Tilt Design-with AC Adapter. So it had better come with one.
Question:	Would this fan be too weak for smokers smell and people who don't take baths? I work for public and need a small fan that is battery operated
Answer:	Open the fan. On the flat part the holds the fan upright there are 2 plastic screw like things. This piece is shaped like a U. Turn each with a screw driver to remove. Then pop off the top cover. The batteries are inserted inside. Replace the cover and plastic screw like pieces and tighten them.

Product features

USB power or battery powered (4 'AA' batteries not included)

Feel the Turbo Force air movement up to 3 ft away

DC motor saves up to 50% energy vs AC motors

Product description

Looking for big fan for your barn?

Tired of trying to find a power outlet to run a fan？

Have had enough of the high disposable battery cost?

Want a powerful and reliable big fan to keep you cool while working in hot environment?

Try it!→→→Geek Aire 16inch Rechargeable Outdoor High Velocity Fan



Features:

-Dual power supply

-Backup power bank design

-2000CFM high performance airflow

-Powful brushless DC motor

-Variable speed control - Stepless

-Vertical 120° rotation

-LED battery power indicator

-IPX4 High water resistant rating

-Durable metal housing & Metal blade

-Portable large carrying handle

-Unique fan blade design



Specifications:

Item Dimensions: 20.9×8.7×18.7 in

Gift Box: 22.2×10.2×20.5 in

AC adapter input: 100~240VAC~1A 50/60Hz

AC adapter output: 24V -1.5A



What Included:

Geek Aire 16inch Fan × 1

User Manual × 1

AC adapter × 1 [INPUT:100~240VAC 50/60Hz, OUTPUT:24V 1.5A]

Exquisite and high-end packaging× 1

2 Year warranty× 1



Note: 

1.USB cable NOT included 

2.This fan can NOT be charged through its USB port 

3.To operate or charge the fan using AC power (120-240 VAC, 50-60 Hz), use supplied adapter only. 

• 【RECHARGEABLE FAN WITH POWER BANK FUNCTION】 Geek Aire 16'' Rechargeable Outdoor Fan is driven by a 15000mAh large Lithium-ion battery which takes 2.5-3 hours to be fully charged. It can run 2 - 18 hours, which is enough to support one day of cooling. In addition, with its power bank function, you can charge your digital devices.
• 【HIGH VELOCITY FAN WITH TILT FEATURE】 This battery powered fan possesses an adjustable 120°tilt head which directs movement more precisely to focus air flow where air is needed. Furthermore, unique metal fan blade design combines with powerful brush-less DC motor to provide max 2500 CFM high performance air flow and durable function.It can move a lot of air, ideal for use in a garage, warehouse, workshop, gym and outdoors.
• 【VARIABLE SPEED CONTROL & LED BATTERY INDICATOR】 This battery powered fan has a variable speed setting, which allows you to control the air flow and noise level to meet your needs (noise level depend on the speed). There's a LED battery life indicator on the control box, which can tell battery life, help you ration the battery life however you want and avoid any nasty surprises.
• 【IDEAL FOR OUTDOOR USE】 This rechargeable electric fan has a IPX4 water-resistant structure which protects it from inclement weather, such as sudden showers during outdoor work or camping. equipped with metal frame and anti-slip rubber feet, this fan has the ability to withstand dropping shocks and to run normally in a wide range of environments. Comes with a carrying handle, makes it easy to transport. Geek Aire 16'' rechargeable fan - a reliable and convenient outdoor cooling solution for you.
• 【HIGH QUALITY AND SERVICE】 Sturdy metal frame and blade, durable paint surface, you can feel the high-quality. We focus on providing excellent service, any issue will be resolved in 24 hours.

Product features

The Housewares Design Awards Finalist

Choosing Geek Aire outdoor fan, you get a star product!

Geek Aire Rechargeable Outdoor Fan has been nominated for the Housewares Design Awards

Improve Your Home Environment Appliances -GeekAire Portable & Rechargeable Fan

15600mAh High Capacity Provide 3-24h Run Time

Choosing Geek Aire outdoor fan, you get a reliable camping partner.

This Geek Aire outdoor fan runs on a rechargeable Li-ion battery, which has a high capacity of 15000mAh. It can be expected to run 3-18 hours, depending on the speed you set. Low speed will offer you a full day of enjoyable camping or high speed will keep you cool for a game of soccer.

Recharge Your Digital Devices

With a USB charging port you can recharge your camping gear and digital devices such as lantern, headlamp, smart phone, ipad and music players.

Note: This fan can not be recharged from the USB port,only recharge by AC adapter.

Reduce Bills

Choosing Geek Aire outdoor fan, you save money!

Most of the cell power fans in the market don't provide battery, so if you choosing a cell power fan like that, you have to buy some batteries and a battery charger.It will be a huge expense.

Thanks to the built-in rechargeable battery, if you choosing our Geek Aire rechargeable fan, you don't have to buy any batteries and any extra battery chargers.

Painting

Geek Aire rechargeable fan has a 16 inch metal blade, Offers a wide area of air flow, is great for cooling a large room, drying painted walls and drawing out the odor. Thanks to the variable speed control, you can accurately control the fan speed to meet your needs.For example medium and low settings avoid too much dust stir up or even paint cracking.

Garage

With 2500 CFM volume of air movement, Geek Aire rechargeable outdoor fan circulates air like a beast, helps cool your hot warehouse and garage efficiently.

Barn

A big fan great for barns,blows a natural strong air, keeping your family pets as comfortable as you are in the safety of their homes.

Gym

High performance airflow and low noise feature offers you a cool and enjoyable work out in your garage, gym or even in the comfort of your living room.

Work Outside

When you work outside and have no access to electricity, this rechargeable fan will cover you.

Camp Cooking

With 120°adjustable tilt angle and variable speed control, you can directs movement more precisely to focus air flow, get rid of lampblack.

Hurricane Season

High battery capacity allows Geek Aire outdoor fan to provide enough power to keep you cool and charge your USB flashlight and lantern in Hurricane Season, especially in the event of a power outage.

What Included

Geek Aire 16 inch Rechargeable Outdoor Fan × 1

User Manual × 1

24V AC adapter × 1

Exquisite and high-end packaging× 1

Product description

Perfect for indoor or outdoor activities, O2COOL's 5-inch Portable Fan can be used in the office, at school, while camping, and especially during a power outage due to a thunderstorm, hurricane or high winds. It operates on two D-cell batteries (not included), features high and low speeds, and boasts a patented fan blade design that extends the battery life while maximizing airflow. Cool by Design, this portable fan is also easy to carry so you can take the cool with you. The next time lightning strikes, make sure you’re prepared to power up with O2COOL.

• MINI BATTERY-OPERATED FAN: Cool off when you’re at home, work or outdoors with Treva by O2COOL's 5-Inch Battery-Operated Portable Fan. Available in black, gray, light blue, and raspberry to complement everyone’s taste, this compact fan won’t take up much space and features a convenient folding design for easy storage and transport. Its perfect for dorm rooms, hotel stays, cruise ship travel and summer camp!
• DURABLE CONSTRUCTION: To provide long-lasting strength and use, this personal fan is expertly crafted using durable plastic construction with a patented fan blade design which extends the battery life while maximizing airflow. The fan tilts and provides adjustable, directional personal airflow and cooling.
• TWO-SPEED OPERATION: To accommodate your needs, the fan features high and low speeds. It fan boasts a quiet operation on both settings to keep you cool while making minimal noise so you can work, read or relax without any distractions.
• EASY TO USE: The fan runs on two D batteries (not included). To install, slide out the battery door and insert batteries following (+/-) marks, then replace door. Slide switch located on the side of fan to your preferred setting. If fan does not operate, verify batteries are installed properly. The fan grill protects fingers from the blades during use.
• EMERGENCY/DISASTER PREPAREDNESS: Make sure you’re prepared the next time a power outage occurs due to a thunderstorm, hurricane, lightning or high winds. You can stay cool and comfortable – even without electrical power with our reliable battery powered fans.

Product features

5 Inch Battery Powered Adjustable Tilt Fan

• MINI BATTERY-OPERATED FAN : Cool off when you’re at home, work or outdoors with Treva's 5-Inch Battery-Operated Portable Fan. This compact fan won’t take up much space and features a convenient folding design for easy storage and transport

• DURABLE CONSTRUCTION : To provide long-lasting strength and use, this personal fan is expertly crafted using durable plastic construction with a patented fan blade design which extends the battery life while maximizing airflow

• TWO-SPEED OPERATION : To accommodate your needs, the Treva fan features high and low speeds. The fan boasts a quiet operation on both settings to keep you cool while making minimal noise so you can work, read or relax without any distractions

• EASY TO USE : The fan runs on two D batteries (not included). To install, slide out the battery door and insert batteries following (+/-) marks, then replace door. Slide switch located on the side of fan to your preferred setting

• EMERGENCY/DISASTER PREPAREDNESS : Make sure you’re prepared the next time a power outage occurs due to a thunderstorm, hurricane, lightning or high winds. You can stay cool and comfortable – even without electrical power

Bright, Fun Color Choices! Perfect For The Office, Dorm, Summer Camp and More!

• 💚【 Lasts Longer】Equipped with 5200mAh rechargeable battery lasts 6-9 hours. This battery USB fan is environment-friendly and energy saving.
• 🆒【Quieter Fan】Everybody loves a fan that does not make noise. This fan is exactly what you want. Its noise is less than 40dB, which creates a quiet environment for your work and sleep.
• 💚【Multiple Power Supplies】The ease of use is what OPOLAR always brings to you. This fan comes with several power supply options so you can use it on batteries or via USB by connecting to a computer, power bank, etc. You can even power the fan with a wall adapter.
• 🆒【Adjustable metal frame】The fan has a 9-inch sturdy metal frame that can be adjusted 360-degree up and down manually so you can choose the wind direction easily according to your height or position.
• 💚【Easy to clean】The metal frame is easy to move. The blade can be cleaned with the wet cloth.

User questions & answers

Question:	How long will it take the batteries to recharge
Answer:	D batteries.
Question:	What battery charger and extra battery’s go with this fan
Answer:	Yes, it will last for 2 days at medium speed. Perfect for use in a tent.
Question:	How do i know when it's fully charged
Answer:	Not sure about the exact dimensions but it will be perfect for your suitcase on the cruise!
Question:	Can you run the fan on a power bank via usb, or the usb is only for charging
Answer:	Yes. If you only press the power button then its on until you turn it off. The button next to the power is the timer that you push to set.

Product features

Easy to clean

With upgraded detachable metal frame, this fan is very easy to clean.

Portable

With a metal base, the fan is easy to carry around and hang on the wall. Great for travel camping use.

Stable

To avoid any vibration and slip, there are 2 rubber legs installed to protect any unbalance movement.

USB Powered

This fan not only works with battery, but also with USB-enabled devices like laptop, power bank, solar panel and so on. It will never stop.

Wide Application

As a large battery operated fan, this fan is suitable for a lot of places, like home, office, camping, power shortage, beach, travel, party, picnic, fishing and so on.

Quiet for Bedroom

It whispers quietly so that you could sleep well with no smoldering heat. Enjoy a cool night.

Size

Being constructed of a 9 Inch durable metal, our fan is built sturdy and compact for easy portability and weighs only 1.78lb.

• Unique Design - Original, fashionable, powerful, potable battery clip fan
• Powerful - High quality motor, max wind speed 10.5ft/s, high speed and low noise, stepless speed regulation.
• Better Quality Battery - Replaceable and Rechargeable 2600mAh 18650 battery ( INCLUDED ),2.5~6 hours working time depend on different speed,USB charging from a computer,power band,USB Charger,Can be also powered by USB power source
• Compact Size - 19*15*10cm(7.5*6*4 inch), portability, handy, lightweight, 360° vertical and horizontal rotation
• Clip Style - Can be Put or Clip on anywhere you want, great for baby stroller, home and office, laptop, gym workout, car backseat, outdoors, camping, trips and anywhere need cool wind

User questions & answers

Question:	can you use regular batteries in the fan
Answer:	For me it charged at 0.68 amps for a little over 8hrs. Here's the full detail: Two 18650 2600mAh batteries shipped w/ my USB/18650 powered OPolar fan. I immediately used it on high for about 4hrs (keep in mind the product is shipped w/ undercharged batteries due to safety regulations) when it died. A digital multimeter showed both batteries at about 3.4v each. I then charged it w/ both batteries in the fan via a USB wall charger connected to a DROK USB multimeter. It steadily drew 0.68amps until the batteries were almost full and then started trickling down as the charge SLOWLY completed. The DROK also showed cumulative mAh during the charge process as 5272, which just about matches the combined capacity of both batteries (2600 mAh x 2) and proves they are good/new & can store their original intended capacity. Both batteries were very cool to the touch(very good sign that they were not hot at all and the charge rate was safe) then registered 4.2v on the multimeter The entire charging process took a little over 8hrs (A bit too long for my taste, so I'll be looking for a standalone charger that I think can safely charge these particular ICR(least safe 18650 chemistry but packs the most power) batteries at 1amp total, meaning 500mAh each), which makes sense because 5200mAh (combined capacity of both batteries) / 680mAh (0.68amps) = 7.7hrs
Question:	can i able to run the fan while charging with a power bank
Answer:	The USB/18650 battery powered fan comes with two (no extra) 18650 batteries and a USB cable., which can be used to plug into a power source for charging. No actual charger in the traditional sense (i.e. USB wall charger) is packaged with this product.
Question:	How do you know when the fan is fully charged? I see the red light while its charging but how do you know when the battery is fully charged
Answer:	Hello Amazon Customer, Thanks so much for your inquiry! There is a indicator light on the back of the fan. When the fan is fully charged, it will turn green from red. Pls notice that the battery will not be charged when the fan is working and the light will not turm on. If you have any other question, pls fell free to ask. Thanks, OPOLAR Customer Service
Question:	How strong is the clip, can it clip tightly to a baby stroller
Answer:	yes you can - that is how I run mine at work - with the power bank

Product features

Main Features

- Clip-on Style

- Small and Portable

- Stepless speed regulation

- High quality and durable

- Lightweight and low noise

- Rechargeable Battery Powered

- USB Powered and Charging

- 360 degrees vertical and horizontal rotation

Specification

Battery Type: 18650 Lithium Battery(Flat type)

Battery Capacity: 2600mAh

Battery Time: 2.5~6 Hours(depends on different speed)

Full charging Time: About 4.5 hours

Input Voltage: 5V

Output Voltage: 4~6V

Output Current: 0.35~1A

Power Rating: 3W(max speed), 1.5W(lowest speed), 2W(USB powered)

Item Weight: 273 gram

Item Dimension: 19x15x10 centimeter

Sturdy and durable

Strong clamp & High versatility

Low noise and safe for children

• 【 Longer Working Hours, Battery Operated & USB Powered 】Hurricane season good helper. The 2020 Upgrade Viniper brand rechargeable small desk fan operates with 3600mAh Improved battery (type-18650) and can operate for 8-24 hours after a full charge. At the same time, the bi-directional optimization of the motherboard and battery makes the Viniper updated version usb fan have longer working hours. It can also be used via USB port from your PC/computer/USB charger or other USB devices.
• 【3-stage adjustable wind speed & Quietness】 Small but poweful. 3-stage easily adjustable wind speed. The speed of this portable desk battery fan can also be adjusted among low, medium, and high according to your demands. it is decent and quiet which ensure the peaceful flow of air, and enough for personal use.
• 【Strong Cooling & 180°Rotation】The Viniper small desk fan has a strong and stable wind that keeps you cool. not disturbing your rest and work. The USB desk fan has 180 degree adjustable rotation.
• 【Safe & Portable】Used high-quality ABS and Brushless copper motor. It has stable performance and long operating life. And It is trouble-free to put this small ( 6.2*6.2*2.3 inch, weight-9 ounces) and the exquisite battery usb fan into your bag and carry it for outdoor events. Also, it can be used for indoor use. Ideal suitable for office, family, dormitory, library use and etc.
• 【Package Content & Customer Service】You get one Viniper Portable Battery Desk Fan, one USB cable, one user guide, Please write amazon email to us for help if meeting any problem. We will respond within 24-hours and offer our Lifetime No Risk Technical Support.

Product features

Viniper USB rechargeable Battery Operated Fan for home/office/desk/dormitory/camping and etc.

Spefications:

- Battery Capcaity: 3600mAh

- Rated Power: 0.65~2.5W

- Input: DC5V1A

- Output Current: 0.15~0.29A

- Output Voltage: DC4.5~8.6V

- Working Time: 8-24h (Battery consumption varies depending on the wind speed)

- Charging Time: 5h

- Size: 157 X 155 X 57mm. （6.2*6.2*2.3 inch）

- Weight: 9 ounces

Package Contents:

- One Viniper Portable Desk Fan.

- One USB Cable.

- One User Manual.

Viniper USB rechargeable Battery Operated Fan (Upgrade version)

Main Feature

• Using high-quality ABS plastics and Brushless copper motor.
• Compact and portable. Creative design makes you feel different.
• Built-in intelligent protection system provides effective protection against overcharging, over discharging, over voltage, over current, over power, over heat and short circuit.

Stage - 1 - Nature wind

Lasting Work Time: About 24 hours

Ideal for dormitory, bedroom, baby strollers, office etc.

Stage - 2 - Soft wind

Lasting Work Time: About 12 hours

Ideal for hiking, walking, camping etc.

Stage - 3 - Strong wind

Lasting Work Time:About 8 hours

Ideal for outdoor, beach, trips, golf sport etc.

• 👧🏻【POWERFUL YET SILENT】: With our newly advanced technology, our portable fans are able to generate up to 3200 RPM in the maximum speed setting while still maintaining a relatively quiet decibel, quiet enough to run in a library.
• 👧🏻【LONG TIME OPERATION AND USB CONNECTION】:4000mAh(2x2000mAh) large capacity batteries provide 5-20 working hours duration (depend on different speeds). Batteries are rechargeable and irreplaceable(for safety). USB charging by a computer, laptop, power bank,USB Charger, cellphone adapter, car charger etc. This hand fan will work on 110 or 220 volts which can be carried to all over the world. 
• 👧🏻【MULTIFUNCTIONAL FAN AND MINI SIZE】:It can be desktop fan or handheld fan to satisfy your different needs with cool design, you can put the fan upright or diagonally on the table,also great for office.You can carry it with you easily when you go out for a picnic, shopping, traveling, camping, etc. It is small in size (3.4-inch wide and 6.3-inch long Weight: 6.1 oz) and can easily fit in your pocket, backpack, or beach bag.
• 👧🏻【FAST CHARGE AND ONE-KEY OPERATION】: Fans gets charged in 3 hours only while other similar fans need 6 hours. The battery of this fan has been designed for the current input of 2A (others 1 A), which makes it get charged faster. Besides, It is easy to use this mini battery fan with only one button. Short press the button to turn on the fan, and press repeatedly to adjust the wind speed or turn off the fan.
• 👧🏻【DETACHABLE COVER AND HANG ROPE DESIGN】:The cover can be detached easily by rotating lid gently and you can clean the cover blade or even the inner part as you wish. Include a 8.1 inches lanyard, so you don't have to worry about the fan falling accidentally. ONE YEAR WARRANTY IS INCLUDED.

Product features

4000 mAh Portable Mini Fan with 3 Speeds for Travel, Camping, Cruise , Include Strap

Whether it is some excursion or a long journey in a hot country, a personal fan will be of great use. Here are some features:

• 4000 mAh battery(5-20 running hours)
• Moves a lot ( 3 Wind Speed:1800-3200 RPM )
• Quiet (brushless motor makes noise to 50 db)
• Easy cleaning(detachable cover)
• Built in quality (ABS plastic housing)
• Fast charge(3 hours finish charge with quick charger(not included))
• Mini Size ( 3.4 *1.8 *6.2 inch，6.1 oz)
• Include 5 lavender aroma tablets, get the cooling while enjoying the fragrance
• Include a 8.1 inches lanyard for carrying easily

5-20 Battery Life

• 1 speed: 20 hours
• 2 speed: 12 hours
• 3 speed: 5 hours

Strong Airflow

• 1 speed: 1800 rpm
• 2 speed: 2500 rpm
• 3 speed: 3200 rpm

Easy to Disassemble and Clean

The front of the fan is easily removed for dusting of the blades.

Hang Rope Design

There is a small hole at the end of the handle. This is a lanyard design, so you don't have to worry about the fan falling accidentally.

Main Switch

• There is an on switch at the bottom of the unit - turn it on to be able to charge or to use.
• Note: TURN THIS SWITCH ON before use and recharge

One Button with Dim Light

• It is easy to use this mini battery fan with only one button.

• Besides, the dim light makes no disturbance during sleep,

What’s in the Package?

• 1 x handheld fan
• 2 x 2000 mAh 18650 batteries(rechargeable and irreplaceable)
• 1 x 2A micro USB charging cable (3.28 ft）
• 1 x user manual
• 1 x service card
• 5 x lavender aroma tablets
• 1* 8.1 inches rope

Gift Choice for on the Go

• Specifications:
• Material: ABS
• Net Weight: 6.1OZ
• Package Size:3.6x1.9x7 inch
• Output Power: 4W
• Charging Time: about 3 hours with quick charger
• Charging voltage: DC5V-1A or 2 A
• Blade Quantity: 4

• ❤ 4 Speed Strong Wind --- The desk fan has 4 wind speed levels (sleep mode/cool mode/strong mode/natural mode), produces powerful wind to keep cool in hot weather. The natural mode's wind is automatically changed from low to high, suitable for office and sleeping use.
• ❤ Rechargeable Battery --- Powered by 3600mAh rechargeable battery, the table fan has a large battery capacity that can last up to 14 hours after fully charged. The USB fan also comes with a 2.4ft USB cable, it’s compatible with universal phone charger(not included), PC/laptop, power bank etc.
• ❤ Small Size for Wide Application --- This is a 5.1 inch mini fan, total measures 14.5*14.5*6.5 cm (5.7”* 5.7”* 2.5”), lightweight and portable. Perfect for home, office, bedroom, camping, trips and everywhere you need cool wind, great gift for hot summer!
• ❤ 360°Vertical Rotation --- The fan head of this portable fan can be rotated 360 degree vertically to direct the airflow wherever you want. The front grill is removable so you can clean the fan head and blades when there is dust, keep the mini desk fan always new and enjoy fresh air.
• ❤ Stable Design & Indicator Light --- There are 4 foam pads on the base of the personal fan, make it more stable and prevent from vibrations. The indicator lights are designed inside this rechargeable fan, the charging light will show red when charge and turns blue after fully charged.

Product features

360° Rotation Desk Fan

The mini desk fan can be adjusted 360 degrees up and down. It provides strong wind at every angle so that you can enjoy cool summer wherever you are.

Considerate Non-Slip Mat

4 foam pads on the fan base keep the table fan stable in place, ensures no vibration and protects no scratches on table. It is a considerate design for home and office use.

Battery Operated Portable Fan

The rechargeable battery fan is powered by 3600mAh battery. A 2.4ft USB cord makes this USB fan compatible with laptop, power bank, usb socket, phone charger, etc.

3600mAh Rechargeable Battery Fan

Charging Light - It turns red when charge and will turn blue after fully charged.

Sleep Mode - Press the button once, the rotating speed is 1200r/min, the wind speed is 2.2m/s, noise degree 20db.

Cool Mode - Press the button twice, the rotating speed is 1800r/min, the wind speed is 2.8m/s, noise degree 25db.

Strong Mode - Press the button three times, the rotating speed is 2800r/min, the wind speed is 3.8m/s, noise degree 35db.

Natural Mode - Press the button four times, the wind will run from breeze to strong cyclically to imitate natural wind.

Long Battery Life

The portable desk fan can last for a long time after fully charged.

Sleep Mode - 14 Hours

Cool Mode - 8 Hours

Strong Mode - 5.5 Hours

Natural Mode - 8 Hours