7 best dual battery chargers

Product description

Introducing the all-new GENIUS2X2, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet. The GENIUS2X2 is a 6-volt and 12-volt two-bank battery charger, battery maintainer, trickle charger, and battery desulfator. It is rated at 4-amps (2-amps per bank) all types of lead-acid and lithium-ion batteries, including flooded, gel, and AGM, as well as marine and deep-cycle batteries.Other commonly used search terms: battery charger, car battery charger, battery charger automotive, battery maintainer, 12v battery charger, 12 volt battery charger, 6v battery charger, 6 volt battery charger, auto battery charger, agm battery charger, deep cycle battery charger, bike battery charger, motorcycle battery charger, car battery maintainer, automotive battery charger, motorcycle charger for battery, battery charger for cars, automatic battery charger, trickel battery charger automotive, trickle charger, trickle charger for car, trickle charger for car battery, trickle charger for 12 volt batteries, trickle charger for motorcycle battery, trickle charger 12v, trickle charger 6v, trickle charger for motorcycle, trickle charger for automobiles, trickle charger for lawn mower, battery maintainer 12 volt, battery 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• Meet the all-new GENIUS2X2 - a two-bank battery charger, battery maintainer, trickle charger, and battery desulfator - the perfect all-in-one solution for battery maintenance.
• Multiple banks - A two-bank battery charger maintainer rated a 4-amps - 2-amps per bank - designed to charge and maintain multiple vehicles like cars, motorcycles, boats, ATVs, RVs, lawn mowers, lawn tractors, trucks, and more.
• Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
• Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
• Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
• Restore your battery - Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
• Beyond maintenance - It's not just a trickle charger, it's an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge.

Product description

The ProSportHD Series features a lightweight, tri-surface heatsink design. This delivers significantly faster charging through optimal cooling, while delivering true rated constant current charging amps during charge mode. Fully automatic multi-stage charging enhances battery performance while extending battery life. DC Voltage Systems: 12/24. Amps: 12. Number of Batteries: 2. AC and DC Cable Length: 6'/6'. Size: 7.9" x 10.5" x 2.9". Weight: 6 lbs. AC Plug: NEMA 5-15.

• Lightweight, tri-surface heatsink design
• Delivers significantly faster charging though optimal cooling
• Delivers true rated constant current charging amps during charge mode
• Fully-automatic multi-stage charging enhances battery performance while extending battery life
• Battery Type: Flooded, Gel, AGM
• Fit Type: Universal Fit

User questions & answers

Question:	on a 2 bank charger can i start my engine while charger is still hooked up
Answer:	Yes, but as with these LEGO games since LEGO Marvel Super Heroes, you will need a Steam account.
Question:	If I have two trolling batteries and one starter (3 all together) the 3 bank will charge them all
Answer:	Yes ,the Hand Grip Strengthener Forearm Grip Workout Kit can be used by both left handed and right handed people. Ergonomic and soft handle of hand grips strengthener is comfortable to hold. Fit for small and large hands, seniors and teens.
Question:	If you need to extend the charging leads what size wire should you use
Answer:	The hand ball is perfect for improving strength, power and speed in the wrists, fingers, and forearms. Hope it will help you!
Question:	Can this charge lithium ion
Answer:	Yes, our product is the same as the display picture, which can be used as a gift for family or friends

Product features

ProTournament Elite Series

• Fastest Charging Time: 4 to 8 hours

• Charges flooded, AGM and HP AGM batteries

• Available in 24A and 36A

• Available from 2 to 4 battery banks

• Battery Sizes: Group 24 to 31

• Selectable battery types

• Concealed waterproof fan provides forced air cooling for reduced temperatures and fastest charge times

• IP 67 waterproof

• Distributed-On-Demand technology maximizes charging amperages and reduces charging time

ProSport Series HD

• Fast Charging Time: 8 to 10 hours

• Charges flooded, Gel, AGM and HP AGM* batteries

• Available from 6A to 20A

• Available from 1 to 3 battery banks

• Battery Sizes: Group 24 to 31

• Updated button style battery chemistry selection

• New high efficiency design increases performance and provides a 3 yearwarranty.

• IP 67 waterproof

• Distributed-On-Demand technology maximizes charging amperages and reduces charging time

Product description

2-amp Dual-Bank Automatic Battery Charger & Maintainer has two independent charging stations to allow for simultaneous charging of multiple batteries. Charges 6 volt and 12 volt batteries, conventional and sealed, with automatic charging and maintenance to maximize battery life and performance. OEM approved 5-stage charging algorithm saves time and energy, while ensuring the battery is properly and fully charged. Active desulfation to recover sulfated batteries, with defective battery detection to eliminate surprises. Includes quick connect cables and alligator clips (6 ft. total).

• 2-amp Dual-Bank Automatic Battery Charger & Maintainer has two independent charging stations to allow for simultaneous charging of multiple batteries
• Charges 6 volt and 12 volt batteries, conventional and sealed, with automatic charging and maintenance to maximize battery life and performance
• OEM approved 5-stage charging algorithm saves time and energy, while ensuring the battery is properly and fully charged
• Active desulfation to recover sulfated batteries, with defective battery detection to eliminate surprises
• Includes quick connect cables and alligator clips (6 ft. total)

User questions & answers

Question:	When it fullcharge will the charger cutt off automatic an when the volts drop it will come on automatically
Answer:	China
Question:	its work for 12V battery cars
Answer:	I never tried. Typically, if you are using a lot of battery turn off location services on the iPad and close unused programs. If that fails, get a new battery for it.
Question:	What is the difference between this model versus yua2ampch
Answer:	Yes
Question:	Okay for deep cycle boat batteries
Answer:	1 AMP = 5 WATT This battery pack has 30,000 mAh . The common sizes range from 2000 mAh to 10,000 or even 12,000 mAh. The bigger the numbers means MORE POWER, which means more recharges for your smartphone or charging for bigger devices like a tablet.

Product description

Conveniently charges two GoPro batteries simultaneously. Includes a spare battery.

• Conveniently charges 2 GoPro batteries simultaneously
• Optimizes charging so you’ll get a fully charged battery as quickly as possible
• Charges via USB port; for faster charging, use with the optional GoPro Supercharger (International Dual‑Port Charger)
• Dual LED lights display charging status of both batteries
• Includes a spare 1720mAh lithium‑ion rechargeable battery

User questions & answers

Question:	How long does it take to charge the battery fully
Answer:	It takes about 2-3 hours to charge a fully-drained battery.
Question:	What USB cable does this use
Answer:	The same cable as the GoPro camera, usb-c to usb.
Question:	Is there an option to order a dual charger without the additional battery
Answer:	There is no option to purchase just the charge. The battery is part of the standard package.
Question:	Soooo does it come with two batteries or one
Answer:	The Dual Battery Charger comes with one (1) rechargeable battery.

Product description

Guest on-board battery chargers have been redesigned from the inside out with the customer in mind. Our newest generation on-board marine battery chargers include leading advancements in digital charging technology and waterproof design/construction. Every Guest charger has a dedicated charging, Sensing and control per bank. The easy to read graphics indicates the status of each battery bank through the charging process.

• 12v 8 amp 2 bank on-board battery charger
• built-in safety: reverse polarity, over-current, over-voltage, over-temperature and ignition protection. in-line fuses for maximum dc wire protection.
• 100% waterproof (ip67) and shock resistant for all fresh and saltwater applications
• dedicated battery charging, sensing and control per bank
• for all 12 volt flooded and agm lead acid batteries. 2 year warranty
• Fit type: Universal Fit

User questions & answers

Question:	How long are the charging wires? The charging unit will be mounted 8 feet from each battery, will they reach
Answer:	They will not reach. I estimate that the leads from the charger are 3-4 feet.
Question:	why does this take so long to ship
Answer:	Can't answer that fully, probably supply and demand. If they are not in stock , can't ship until they have stock????
Question:	Can you extend the cable that connect to the batteries since I need 8 foot
Answer:	I would try to mount unit in different spot 1st. Sure u can extend any wire, guessing warranty would b voided then...
Question:	How long are the charging cables ? I saw one answer 3 to 4 feet. A more accurate measurement would be a big help
Answer:	I didn't measure them, but I think they are more like 6 feet.

Product features

Intuitive LED Display

Easy to read LED user display indicates the status of each battery bank through the charging process.

Fully Automatic Multi-Stage Performance Charging

ChargePro’s 5-Stage Performance Charging algorithm is fully automatic and designed to maximize battery performance and extend battery life of all 12 volt Flooded and AGM lead acid batteries.

100% Waterproof & Shock Resistant

100% waterproof (IP67) and shock resistant for all fresh and saltwater applications.

Heavy-duty Strain Reliefs

Durable construction prevents cable strain and breakage.

In-line Safety Fuses

Provides maximum DC wire protection with reverse polarity, over-current, over-voltage, over-temperature and ignition protection.

Low Profile & Lightweight

Low profile sealed aluminum housing is potting free contributing to a 40% lighter design, allowing more efficient heat dissipation, increasing longevity.

Product description

The DEWALT DCB102 12V - 20V MAX Jobsite Charging Station allows you to charge DEWALT 12V - 20V MAX Li-Ion batteries. It includes two USB ports to charge compatible devices (1.5 Amp Max Output). This unit charges the batteries in 95 mins or less thus minimizing downtime. It also features a diagnostic display with an LED indicator that communicates the battery charge status: charged, charging, replace pack, and battery too hot or too cold. Common applications include: Charges all 12V-20V MAX DEWALT Batteries, and also able to charges cell phones , IPODs & Tablets.

• Charges Two 12v-20v Dewalt(r) Li-ion Batteries & 2 Usb Ports
• Charges Batteries In 95 Min Or Less
• Diagnostic Display With Led Indicator That Communicates Battery Charge Status
• Charges DEWALT 12V - 20V MAX Li-Ion batteries
• Includes two USB ports to charge compatible devices such as cell phones, Ipods, Tablets
• Charges the batteries in 95 mins or less thus minimizing downtime
• Diagnostics with LED indicator displays the battery charge status

User questions & answers

Question:	What are the dimensions and are there screw mounts on the back for wall-mounting over a workbench
Answer:	6-8 hours
Question:	Will this charger unit charge two 6ahr or 9 ahr dewalt 60v max flexvolt batteries (20/60 volts) the same as it does two 20v max batteries
Answer:	Use a voltmeter and see if the charger is putting out current. Be sure to check the output specs on the charger and see if it meets those specifications. Usually, it's around 13.2 volts D.C. and anything less than 12.5 will not charge the battery.
Question:	Need bat to go with heated coat . Do they make one able to charge off cigarette lighter? For husband who's an over the road truck driver
Answer:	Not sure, we got it for our craftsman power washer.
Question:	Does anyone know how long it takes to charge a 5ah battery? Does that time get doubled when you have two charging at the same time
Answer:	It’s not a good idea to leave charger plugged in when the battery is fully charged, most of not all manufacture’s recommend unplugging charger so as not to burn up battery life

Product description

Conveniently charge two GoPro batteries simultaneously with this Dual Battery Charger and spare 1220mAh lithium‑ion battery for your GoPro. It charges via most USB ports. For up to 38% faster charging, use it with the optional GoPro Supercharger (International Dual‑Port Charger). Dual LED indicator lights display the charging status.

• Conveniently charges two GoPro batteries simultaneously
• Charges via USB port for faster charging, or via the optional GoPro Supercharger (International Dual‑Port Charger)
• Dual LED lights display charging status of both batteries
• Includes a spare 1220mAh lithium‑ion rechargeable battery
• Allows you to charge your spare batteries while you use your camera

User questions & answers

Question:	how long does it take to charge the battery to full capacity
Answer:	Total charging time can vary depending on your battery's need. If fully drained, it can take 4-5 hours. In my experiences, it's 2-3 hours when my batteries are down to 20% - 30%.
Question:	Is this the battery that has the new discharge rate for 4K recording
Answer:	Yes, this is the new battery. The blue strip indicates it is the newest version of the battery, the one for HERO8 Black.
Question:	Is it like a powerbank too? Or it doesn't work when it's not plugged into a wall
Answer:	No it is strictly a charge that has to be plugged in to work
Question:	Can you charge the new (blue strip) battery in the old dual battery charger
Answer:	The Dual Battery Charger has not changed and will work with both types of batteries(black/ blue strip). See https://community.gopro.com/t5/en/HERO8-Black-Battery-Compatibility/ta-p/398667 for reference.