12 best solar charger for backpackings

• Updated Triple USB Ports: 3 USB charging ports( Each is 5V/2.4A Max) with smart charging technology which can recognize your device smartly then providing optimal charging speed vary with different devices. The 3 USB ports can offer the total current at 5V/4.8A Max. CE/ FCC/ RoHS certificated, BigBlue ensure 100% safe charging with overcharging, overheating and short circuit protection.
• Easy To Carry: With compact size (11.1 × 6.3× 1.3in folded) and lightweight (20.6 oz) design, BigBlue foldable solar charger panel bag is small and light enough to fit into any camping backpack, hiking daypack, or emergency kit. They’re also good for stashing in an emergency kit. The 3 USB ports allow you to charge multiple devices at once.
• High Energy Conversion: Highly efficient SunPower panel convert up to 21.5-23.5% of solar power into free energy in enough sunlight. This special PET polymer surface protects it from occasional rain or wet Fog and all the ports are covered by a cloth flap and rubber cover to protect them from dust or water damage.
• Wide Compatibility: Attached Micro USB cable for almost all 5V Android devices & some DSLRs, or Apple devices (needs extra original cable). Our solar phone charger can't store the electricity, please unfold it in the outdoor direct sunlight, then connect it to your device. Note: our solar charger doesn't fit the laptops and iPad Pro.
• Package & Support: You will get BigBlue 28W Solar Phone Charger, 50cm Micro USB Cable, User Manual, 24-month Worry Free Card and friendly & Customer Service. Note: Any cloud cover arrives may influence the charging speed. We suggest you to replug the device and reopen the solar panels if the charging is too slow.

Product features

2020 UPGRADED 28W SOLAR CHARGER

Follow the Sun, Power Your Life!

- Compatiible with iPhone 11/Xs/XS Max/XR/X/8/7, iPad Air/Mini etc.（Not included the iPad Pro）

- Android Devices such as Samsung Galaxy S9/S8/S7/S6, Nexus 6, 6p and more.

- DSLRs with compatible USB cable.

- Devices needs a 5V input Voltage(no extra voltage), this solar charge can't support the iPad Pro.

Note:

- 28W refers to the power of the solar panel which is not equal to the actual output power of the USB port, because there will be some loss In the process of conversionin and in process of output in order to maintain the voltage stability.

The power of the solar panels:

Our product has 4 solar panels, each piece is 7w; so the power is 4*7w=28W;

Taking BigBlue Solar Charger on the Go with You !

- Easy to be folded to the size of magazine, can be put in your bag, as a portable direct power to carry.

- 4 buckles attached for putting on camp or hang tightly on your backpack/tent/tree, etc.

- 3 Port USB connector: Can charge phones and tablets at same time.

Note: Any cloud cover arrives it may knock the value of output down. We suggest you to replug the device and reopen the solar panels to reset the power controlle.

Pcakage:

- 28w Solar Panel Charger*1

- Buckles* 4

- Micro USB cable*1

- User Manual*1

• 25000mAh High Capacity: Built-in 25000mAh Li-polymer battery, it can charge your phones 8-10 times or tablets 3-4 times for an average of 9 days of usage per charge.
• 4 Solar Panels: With 4 foldable high-effeciency solar panels, up to 1A input current under the sunlight, which is 4 - 6 times faster than the other solar chargers. You can also use micro USB cable to charge it.
• Dual USB 2.1A Output: Dual 2.1A USB ports allow you to charge 2 devices simultaneously with 2.1A high speed charging. Auto-detect your devices' current to pair the optimal output.
• Built for Outdoors: Rugged construction is dust, shock and waterproof; Built in LED flashlight with SOS mode, perfert for outdoor emergency.
• What You Get: 25000mAh Portable Solar Charger, a micro USB cable, User Manual.

User questions & answers

Question:	How does this changer perform in colder temperatures
Answer:	Hi, glad to get your inquiry. Because it's in the winter, so the solar charging speed will slower than that in the summer day because of the decrease of sunlight intensity. So i recommend you use wall charger to charge it in colder temperatures. And any problem arises, you can contact me directly at [email protected] or amazon message. i will do my best to solve your problem. hope this answer can help you.
Question:	Will it run a small 5v usb fan
Answer:	We bought a couple of dpolar f621 5v fans and it ran them awesome during outage from hurricane. Fans are awesome too for 10 bucks a pair lol
Question:	Can you also charge fast with electricity then take camping and maintain with solar
Answer:	Yes, it can be recharged by solar power or wall charger. You can fully charge it by wall charger before traveling, and then hang it on your backpack when you travel, it will charge itself by solar power. hope this answer can help you.
Question:	How long does it take to fully charge from a low charge level
Answer:	Glad to get your inquiry. If you use 2A wall charger, it will take 12-15 hrs to be fully charged from a low charge level. If you use 1A wall charger, it will take 18-25 hrs to be fully charged. If you use the solar panels: if you put it in the direct and strong sunlight, it will take 35-50 hrs to be fully charged. Hope this answer cna help you:)

Product features

Hiluckey 25000mAh Solar Charger

Hiluckey solar power bank is compatible with almost all the 5V devices as iPhone, iPad, Samsung, Sony, Huawei, HTC, LG, Nexus, Tablet, camera, Bluetooth, GPS and more

• Qi Wireless & Solar Power：10,000mAh wireless power bank with solar. Not just wireless power bank but wireless charger as well compatible with iPhone XR/ XR MAX/ XS/ X/ 8/ 8plus, Samsung Galaxy S9/S9plus S8/S8plus and all qi-enabled mobile devices.
• Friendly Reminder on Solar：kindly know that solar charging is an additional feature, Taken the small panel size, large capacity and uncontrollable sunlight intensity into consideration, the solar charging option works as a backup solution while other sources of power is unavailable. Make sure the power bank is fully charged before your trips.
• Extensive Tested Charging Times：The charging times of the solar phone charger have been extensively tested. Itself can be fully recharged around 6hours with 5V/2A adapter, It can charge iphone7plus up to 2.2times, iPhone X up to 2.3times, iphone8 up to 3.5times.
• Sturdy Durable and Compact Size：the portable charger is made of premium ABS materials and lithium polymer battery, highly sturdy and durable. Its equipped with two USB, type C, dual flashlights and a compass kit. Light weight and compact size.
• Dual Flashlight & Compass Kit：The solar phone charger is built with dual bright flashlight, and comes with a portable compass kit, a handy tool for outdoor activities, like camping, cycling, fishing, traveling, hiking and beaches.

Product features

ONE FOR FIVE PURPOSES

• Qi Certified Wireless Charger (QI-ID 3533)
• 10000mAh Portable Power Bank
• Solar Charger for Outdoor Activity
• Dual Flashlight Work as Torch
• Complimentary Compass Kit

• 【High-Efficieny】The high-efficiency of its three solar Monocrystalline panels cell is based on SunPower Maxeon technology, that allows them to reach 21%-24% of conversion efficiency while providing enough power (up to 2.0A max per port or 3.0 A max overall)
• 【Advanced Smart IC Chip Technology】 Microchip support to detects the electronic devices plugged into the USB ports for fast charging two phones simultaneously under safe conditions as well as the prevention of overheating
• 【Portable and Foldable】The 6.3x 11.1x 1.06 inch (when folded ) small size and 17.3-ounce design that can easily squeeze in your backpack offers portability and simplicity, and the attachment hook makes it ideal for connecting to a backpack while you’re on the hiking or walking around town
• 【Dualable Design】The canvas surface and precision stitching withstand rugged for outdoor use and the PET polymer cover that guarantees IPX4 waterproof level protection will make the panels resistant to water and even dust
• 【Package】Nekteck 21W Solar Charging Panel, 2.6ft(80cm)Micro USB Cable, User Manual

User questions & answers

Question:	Is it water resistant
Answer:	Yes
Question:	Q: When the charging process is interrupt by cloud or trees will the charging countinous automatically or must i plug out and plug in the smartphone
Answer:	Ive found that the device you're charging has more to do with the restart or not. My easyacc power banks restart on their own when connected to my Aukey and Nektek chargers, but my cheaper power banks wont. They need to be separated and replugged each time the wattage changes. (From a cloud, shadow etc)
Question:	How long does it take to charge
Answer:	there is no battery inside the panel, so the time it takes to charge your device is depending on the capacity of your device.
Question:	Can you connect an inverter to this
Answer:	think the question was asked to learn about the system...inverter would not be necessary due to the lack of power being converted to ac..

• 3X Faster Solar Charging: Three foldable solar panels can reach a max 4.5W output in direct sunlight, tripling the solar power that you can get from a single panel charger. It can be attached to your backpack to get free solar energy when you are hiking or folded up to a compact size for easy carriage.
• 24000mAh Impressive Capacity: You can charge your smartphone 6-8 times, tablet at least 2 times and other USB devices multiple times. One recharge will let you have a week’s power, now feel power secure and say goodbye to low battery anxieties.
• Outdoor Essential: It has a bright LED flashlight with 3 modes to help you find your way in the darkness and seek for help in emergencies. Made of extremely durable materials to protect it from drops, dust and rain, the solar charger is an essential survival gear for hiking, camping and other outdoor activities.
• Intelligent Outputs & High Compatibility: Two USB charging ports with smart technology can automatically detect your device and deliver the optimal charging current for different devices, compatible with iPhone, iPad, Android phones, tablets and more.
• Reliable Backup Battery: Our solar chargers have been vigorously tested to protect itself and your device from overcharging, overvoltage, overcurrent etc., so you have dependable backup power for your devices whenever and wherever you need.

User questions & answers

Question:	Mine came without instructions. Are there instructions online
Answer:	There was not much in the way of instructions except to charge the unit with the supplied cord till fully charged. I dont know if there are instructions on line. Mine came fully charged and I have been charging it via the sun ever since. The unit holds a charge for at least 12 hours. You can charge 2 devices at the same time using usb ports under black protective cover on bottom of unit. Power button on back has flash light with 1 push, flasher when pushed twice and a strob when pushed a third time. Forth time turns off light. Blue indicator lights, on side of charger show level of charge. Hope this answers your question.
Question:	Is this something that can be charged by plugging into a wall outlet
Answer:	Yes. Plug it in via the supplied usb cable. The solar panels are a secondary charging source.
Question:	Does the sun recharge it
Answer:	Hi , yes, it can be recharged by sunlight at outdoor. And it can also be recharged by adapter indoor. We sugget you fully charge it by wall charger before you go out.
Question:	How fast can it charge most phones
Answer:	HI , it has 2 usb output and max output current is 2.1A , which allow you to fully charge your phone in 1.5h.

Product features

24000mAh Solar Charger

Wide Compatibility

The solar charger is compatible with iPhone, Samsung, LG, tablets, digital cameras, GPS devices and other USB charging devices.

Two Recharging Ways

You can recharge the solar phone charger by plugging it in a wall charger or unfold the solar panels and let it harvest some solar power.

Multifunctional Flashlight

The solar power bank has a built-in flashlight with standard, SOS and Strobe mode, which is super useful in the outdoor environment.

• 25000mAh SOLAR CHARGER: Provides large battery backup for usage during outdoor activities. The power bank can charge iPhone 6 around 10 times, Samsung S6 around 7 times and iPad Air around 3 times on a full recharge.
• 4 FOLDABLE SOLAR PANELS: This Portable Solar Charger is handheld sized, which looks a slightly larger than iphone X when fold. It can absorb more solar energy than ordinary solar charger when unfold.
• FAST CHARGING: Dual USB output ports can charge 2 devices simultaneously up to 5V/2.1A with Quick Charge. Auto-stop when the phone is full charged. This helps avoid over-heating & over-charging situations.
• EMERGENCY LED LIGHTS: The solar power bank equipped bright LED light, works perfectly in darkness, ideal for outdoor trips or emergency events. Easy to carry, you may hang it on your backpack for traveling, hiking, camping.
• WHAT YOU GET: 1* Solar charger, 1* Micro-USB cable, 1* User manual. Note: please don't put the charger in the car to charge by the solar.

• 25000mAh High Capacity: With Lithium polymer battery, it can charge iPhone 8 about 10+ times, S6 about 6.3+ times and iPad mini 4 about 3.3+ times, ideal for 10 days of travel.
• 4 Solar Panels: The solar charger can absorb more solar energy, with 5W solar power and 1A current, it’s charging speed under the sun is as same as the iPhone adapter. (Support wall charger).
• Dual 2.1A USB: The solar phone charger can charge two devices simultaneously. A 2000mAh phone can be fully charged in 1-1.3 hours and a tablets is about 2 to 3 hours.
• Waterproof and Practical: It has a waterproof cover, built-in bright LED light with 3 modes (Steady-SOS-Strobe), perfect for camping, hiking and more outdoor activities.
• What You Get: 1× 25000mAh solar charger, 1× micro-USB cable and 1× user manual. Make sure your smart devices keep powered all the time!

• 【High Quality Portable Solar Charger 】: Made of durable and reliable ABS+PC+Silicone material.Solar phone charger, featured with compass and 2 bright LED flashlight. Awesome for outside activities such as camping, hiking and other emergency use. The solar USB battery pack can be regards as a nice gift.
• 【FRIENDLY REMINDERS ON SOLAR POWER】: As the charging speed is subject to sunlight intensity, solar panel size, and panel conversion rate, which may take long time to charge.The primary way to charge the battery bank is by USB and only use solar charging feature in an emergency. The USB cable in the package is only used to charge the solar charger. It is not recommended to charge other devices, which may slow down the charging efficiency due to incompatibility.
• 【Compatible with Multiple Devices】: Compatible with all smart phones,Tablet and other USB devices. More than 900+ recharge lifecycle. Solar Charging Travel Power bank with Flashlight / Carabiner, Very reliable and durable.Solar power bank provides more convenience in your daily or in your trip.
• 【Convenient Smart Express Charge】: The solar powered charger has dual USB and powerful LED light.Makes it easy to charge two smartphones simultaneously or a tablet at full speed . 2 led lights can be used as flashlight with Steady-SOS-Strobe mode. Five pilot indicators indicate the status of battery charger timely. Green light on when charging by solar, blue light on when USB charging.External battery charger with solar panel can recharge by solar or outlet.
• 【Friendly Service for Solar Power Bank】: 24h online after-sales service, friendly replace policy. Note: Solar charging is limited, the charging power can't always reach the maximum value because of the environment. It's recommended to take the solar charging feature as the emergency back-up solution instead of the main power sources, please fully charge it by USB cable before traveling or hiking.

Product features

Specially for Emergency Power Sources

Battery type: Li-polymer battery

Solar power: Single crystal 1.5W

Application type: commonly used

Material: ABS+PC+ Silicone

Capacity: 20000mAh

Input: DC 5V/1.5A

Output: DC 5V/2.1A(one device, output max 2.1A)

DC 5V/1A(two devices, each output 1A)

Charging time: 8-10h

Multi-Function Two LED Flashlight

With Three Mode available(Normal /SOS /Strobe), convenient to control with one button.

SOS mode is specially designed for emergency use.So it is a perfect outdoor companion.

Highly Durable and Practical

Whether you are in travel, adventure, rock climbing, outings or daily life, it's a perfect companion for you and your friends.

All of these are designed for your wonderful outdoor activities.

Two Different Charging Methods

The portable power bank can be recharged in direct sun. But please note that this solar charging function is only used for emergency.

You can also use wall charger to recharge it.

• 4X Faster Solar Charging: It has 4 ultra-large foldable solar panels, the max power can reach to 6W / 1.2A in direct sun, it's 4 times faster campared to single panel charger.
• 25000mAh Colossal Capacity: It can charge your iPhone, Samsung and most phones 7-9 times, tablets 3-4 times after a full charge. No need to worry about your phones lack of juice in hiking or traveling anymore.
• Fast Charging: Dual 2.1A outputs allow you to quick charge 2 devices simultaneously. The built-in intelligent IC chip can protect your device from over-charging, over-current and short-circuit.
• Outdoor Power Companion: Featuring a bright flashlight with "Steady-SOS-Flashing" 3 modes and waterproof, dustproof, shockproof construction, it is perfect for camping, hiking, fishing and more.
• What's Included: The package includes a solar charger, an user manual and a Micro USB cable. A good companion for outdoor trip.

• 25000mAh high Capacity: It can charge the iphone8 about 9 times, the Galaxy S9 about 5 times, iPad Mini 4 over 3 times, MacBook pro about 3 times. Meet your long trip needs.
• 6W Solar Powered: The current is up to 1A when in full sun. At outdoors, you can hang it on your backpack to charge anytime. It also can be charged faster via USB and Type-C cable.
• Dual USB Output: It can charge 2 devices simultanuously. A 2000mAh phone can be fully charged in about 1-1.3hr. Using USB-A to USB-C cable can charge your laptop.
• Outdoor Essential: Waterproof, shock and dustproof. Built-in a super bright LED flashlight with SOS emergency mode. It can provide you great illumination brightness when you are outdoor at night.
• What You Get: 1* solar charger, 1* USB-C cable, 1* user manual, 12 months warranty and friendly customer service. Note: please don't put the charger in the car to charge by the solar.

User questions & answers

Question:	Is it okay to leave this outside in the rain
Answer:	No, We designed a waterproof cover in the position of the usb ports , which can protect against the water and rain splashing. But you can't leave it in the rain or sink it in the water totally for a long time, which may result the damage of the solar charger or shorten its use life.
Question:	Do all apple products work on this charger
Answer:	HI , Yes, it is compatible with all apple devices, but you have to use your own lighning usb cable. And it also can charge almost all smartphones like android, LG, Samsung.
Question:	How long does it take to charge the solar charger to
Answer:	The solar charging speed will be affected by the weather and the environment (for example: cloudy and sunny, summer and winter), you need to put it vertically in the sun without any obstruction. Theoretically, the optimal solar charging time is 11:00am-4:00pm, when the total power reaches the maximum value of 5W , it will take 30-35 hours to fully charge. However, during actual use, the intensity of sunlight changes at all times due to environmental factors, so the charging power can't always reach the maximum value and the charging time will be longer.
Question:	Hi, would it charge my laptop? Thanks
Answer:	Will it Charge a Dell Latitude 7200 2-in-1 laptop using an USB-A to C adapter? If not, will it with a chipped adapter and do you sell one?

Product description

26800mAh Fast Charging Portable Power Bank Solar Charger

Three 3.1A Outputs & Dual 2A Inputs Compatible for all smart phones

Specification:

Battery type: Rechargeable Li-polymer battery

Battery Capacity: 26800mAh

Solar panel specification: 150.8*71.3mm(300mA) material: ABS+TPU

charging time: 13h

Product Dimensions: 176*95*29mm

Product Weight: 564g

Operation temperature: -5℃~+50℃

Flashlight: 3W(198 lumens)

Package List:

1 x 26800mAh Solar Charger

1 x Micro USB Charging Cable

1 x Lanyard

1 x User Manual

Warning Tips:

1. BC1.2 fast charging(5V 3.1A) charges the power bank much faster than iPhone adapter(5V 3A). 

2. Take AC charging as daily power sources please. The energy transformation from solar to electricity is rather slow and the solar charging speed is subject to sunlight intensity and panel conversion rate. It takes 6-8 hours to solar charging 5-10% of the battery, which is designed to make emergency phone calls for outdoor activities.

3. For your safety, please don’t leave the power bank in your car,or expose it to intensive sunlight for too long.

4. The power bank is IPX6 rainproof but not totally waterproof,please don’t use it underwater or wash it with water.

5.Keep the solar power bank out of the reach of children and avoid inappropriate use by children.

• High Capacity Solar Power Charger: newest 26800mAh power bank especially for outdoor enthusiasts. It can charge iphone7 up to 12 times, iPhone 11 up to 8.2 times, samsung s10 up to 6.5 times, iPad mini5 up to 3.3 times and it is up to 8 days of reliable power on a single recharge; greatly shorten your charging time; best choice for resources of emergency power
• 15W Fast Charging: our power bank can charge 3 phones at the same time at full speed, satisfy your different device; auto-detect your devices' current to deliver the fastest possible charging speed 3A max which can fully charge iPhone 11 in 1.2 hours; it is quite convenient for yourself and your friends in outdoor activity or at home
• Super bright Led Emergency Flashlight: 18 led light on the back side of the power bank, great illumination; long press the power button to turn the light on; the flashlight also includes the sos international distress signal, flashing warning function mode; great choice for camping hiking and other outdoor activities, light up your outdoor life
• Sturdy Durable and 2.5x Recharging: the solar power bank is made of premium fireproof materials and premium lithium polymer battery, highly sturdy and durable; ipx6 waterproof, dustproof, shockproof; its equipped with Micro and type c inports, three outports 3.1a; you can fully charge your power bank in 7 hours with a usb c charger, which is 2.5 times faster than 1a input. The usb c port also can work as output to charge your phone, light weight and Streamlined appearance
• Best Gift and Safety: this solar power bank is the best gift for family and friends

Product features

Never Without Power!

When traveling, People often bring a lot of electronic devices, such as mobile phones, cameras, drones, flashlights, lights, navigators, mobile power supplies, etc. With a solar charger, You can add power to your device anytime, anywhere, No need to worry about missing the use of any device, Escorting your journey, safe and reliable.

Bright LED Flashlight

18 LED light (4 Modes: Normal / Soft / Strobe / SOS) on the back side of the power bank comes with a hanging rope, Easy to hanging it on your backpack (long press the power button to turn the light on). If in difficulty it has a cool SOS lighting feature, to signal for help. Smart choice for Camping, Mountain Climbing, Hiking, Picnic, Fishing and other outdoor activities.

Essential for Camping / Hiking

This is a powerful handy device to have when going off grid. The device can be powered by both a USB port mains power or sunlight. It charges your phone in no time, in fact it can charge your phone up to 5 times when fully charged. It is able to charge three devices at the same time.

1 Solar Indicator & 4-level LED Power Indicator

Integrated 4 Blue LED indicators showing the remaining power in the external battery. Another green LED indicator that tell you when it is absorbing light. The USB port on the solar charger is protected by a secure cover. the powerbank has good rubber seal around ports which can repel rain and averse weather.

Two USB Outports plus One Type-C Outport

An efficient smart IC detects the inputs of all connected devices and assigns the current output accordingly. You can charge three devices simultaneously with the high-speed output 3.1A for fast charging. Dual input port (Type-C and Micro USB) enables to charge itself also as fast as 2A.

Flight Approved for Carry On

Solar power bank on plane - flight approved for carry-on luggage (usage on board is subject to any applicable regulations). The charger it waterproof so don’t have to worry about getting rain on it when outdoors. Built- in multi-protection system, prevent the charger from over-heating, over-current and short circuit.

Nice for Outdoors

Product description

"Plug into Independent Power." When the power grid goes down unexpectedly, stay powered and connected! Bring the power of the sun directly to your smart phone! * Package: 1 x Solarpad 5 Watt USB solar charger 2 x carabiner * Output - Female USB 2.0 Type A Connector * Maximum Output - Power: 5 Watts | Current: 1000mA | Voltage: 5 Volts * Works with USB battery banks and most phones * Cell Type: 21% Efficient Sunpower Monocrystalline Cells Laminated on Plastic Subtrate * Overallsize: 259mm X 155mm X 2.5mm (10.20 X 6.10 X 0.1inch) * Net weight: 122g/4.30oz * For your everyday use – Charging your smart phone daily with the power of the sun is not a problem with Solarpad. Experience renewable off-grid power everyday with this fully DC solar power system. Entry-level solar solution – The Solarpad Kit is a low cost, entry-level solar system for those wanting the independence of solar energy, without the high costs and space requirements of large heavier panels, inverters, and battery banks.

• HIGH EFFICIENCY - 21% Efficiency 5 Volt Max 1 Amp Max. Female USB 2.0 Type A Connector works with USB battery banks and most phones. NOT for use with Tablets.
• ULTRA LIGHT-WEIGHT & THIN - Weight: 122g/4.30oz Size: 259mm X 155mm X 2.5mm (10.20in X 6.10in X 0.10in)
• CONFIGURABLE - 4 Stainless Steel Grommets with 2 Carabiners for Securing to Backpacks, Tents, and other Outdoor Equipment. USB port located in the back center of panel for easy cable management.
• DURABLE - Water-Resistant and Long Life. With our integrated ETFE lamination process, its lifetime can last up to 15-20 years under normal outdoor conditions.
• * FOR BEST RESULTS - During cloudy days, intermittent sunlight, while mobile, or having any difficulty charging a phone, it is recommended to connect Solarpad to a USB battery bank. * Plug charge cable to Solarpad, place panel in direct sunlight, and then plug in phone to fully charge in 3-4 hours. * Never place phone or batteries in direct sunlight. * Best times to solar charge is from 8am to 4pm in the summer and 10am to 2pm in the winter. * Place Solarpad facing up on the top of the backpack.

User questions & answers

Question:	How fast can it charge a cellphone? Is there a battery with it
Answer:	Considering that the panel is facing South to maximize on the East to West direction of the sun, it will depend on the battery capacity of your cellphone. You do the math, 5 watts is equal to 5 volts at 1000 mah. If you have a 2000 mah cellphone battery, it will charge in 2 hours more or less.
Question:	is it possible to combine multiple solarpads to get more amps
Answer:	It is not recommended to connect multiple Solarpads together due to voltage drop. However, if your particular application requires tying multiple Solarpads together and voltage drop is ok, then you'll need to tie the cables connecting each Solarpad in parallel with a diode on each end. The diodes prevent electrical current from flowing back in to the cells, but also have a voltage drop across them, which phones don't like. It is possible to have a custom connector before the regulator specifically for chaining multiple Solarpads, but that would increase cost and weight. It's much easier to just have a bigger solar panel for different applications. We are working on larger sizes for more stationary applications.
Question:	Where is this made? Thank you
Answer:	Solarpad is designed in the US and made in China. Future versions will have markings indicating the country of origin.
Question:	One of the photos shows the panel with trimmed edges. How wide gap around black area should be preserved to keep panel functional
Answer:	It isn't recommended to trim the edges due to risk of bending the panel too much and cracking the solar cells. However, if you really need to trim the edges for your particular application, just be sure to leave at least 1/4" gap around the solar cells (black area), but the edges may not be as smooth and clean after cutting. Cutting too close to the solar cells can damage or delaminate them.