Custom logo Doublepow Smart USB charger for 3.7V cylindrical li ion battery

  • 2 - 199 Pieces
  • 200 - 999 Pieces
  • 1000 - 4999 Pieces
  • >=5000 Pieces
Socket Standard:
Lead Time:
Quantity(Pieces) 1 - 1000 1001 - 5000 5001 - 20000 >20000
Est. Time(days) 5 8 10 Negotiable
Customized logo (Min. Order: 1000 Pieces)
Customized packaging (Min. Order: 1000 Pieces)


Graphic customization (Min. Order: 1000 Pieces) Less
$1.39 /Piece | 1 Piece (Min. Order) | Buy Samples
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Quick Details
Brand Name:
Model Number:
1 x USB
Place of Origin:
Guangdong, China
12 Months
Key Feature:
Independent charging channels
Color Box Packing
Cylinder Rechargeable Batteries
Over-charging Protection
Product name:
USB Fast charger
3.7V li ion battery
Independent charging channels
standard battery
Supply Ability
Supply Ability:
5000 Piece/Pieces per Day
Packaging & Delivery
Packaging Details
each one putted into pp bag, and loaded into paper box
100pcs per standard carton
Picture Example:
Lead Time :
Quantity(Pieces) 1 - 1000 1001 - 5000 5001 - 20000 >20000
Est. Time(days) 5 8 10 To be negotiated
Battery Charger

Detailed Parameters of Doublepow UK63 2 Slots 3.7V li ion battery quick charger

This charger is pretty intelligent quick USB charger, can charge 3.7V lithium batteries quickly(10440 14500 16340 18500 18650 21700 26650).

  • Safety Guarantee - Battery detection technology, automatically turn to trickle charge when batteries are full charged.
  • Independent charging channels - all charging channels are independent, can charge 1-2 pieces 3.7V rechargeable batteries.

  • Fast ChargingThe charging current can up to 1A, ensure the battery can be charged quickly.

  • Intelligent control - Advanced MCU control, over-heat and over-current protection, short-circuit protection, non-rechargeable and defective battery detection.

  • Biggest Save - Best product but lowest price and high efficient after sale service always here to help.

If you need other series battery charger, please find details from below form or Send Us An Inquiry or Email with your mailing address, we will reply you within half an hour, thank you!
No.Battery Charger SeriesApplication
1B Series Standard Charger

Size C/D/AA/AAA/9V NiMH and NiCD Batteries

2D Series Multifunctional ChargerSize C/D/AA/AAA/9V NiMH and NiCD Batteries


K Series Intelligent Quick Charger

Size C/D/AA/AAA/9V NiMH, NiCD Batteries, 

3.2V / 3.7V lithium Batteries

4U Series USB ChargerSize AA/AAA NiMH and NiCD Batteries
5UK Series USB Intelligent Fast ChargerSize AA/AAA NiMH and NiCD Batteries, 3.7V lithium Battery
6KTV Series Multi-slot Intelligent Fast ChargerSize AA/AAA 1.2V NiMH and NiCD Batteries
Company Information

About Us - Professional Battery Manufacturer and Supplier in China

Shenzhen Doublepow Energy Technology CO., LTD., specializes in the R&D, manufacture, sales and service of various rechargeable battery, battery charger and consumer electrionics. Established in 2012, located in Shenzhen,China.


Our Factory

We are proud of our state of the art facility using advanced processing equipment and is approved by the ISO 9001:2008, which span a total of 10,000 square meters, we can turn out over 2,000,000 pcs batteries and 1,000,000 pcs battery chargers monthly production capacity. 

Our Team.

Compared to other brands, the most valuable asset of "Doublepow" is our team, we have the most professional and top designers who have been in the battery industry for many years, all they are experienced and famous people in this industry.


Our OEM/ODM team spares no effort to meet the needs of all our customers, whether it's project development, application solutions, or technical support, with customer needs as our top priority. 

Our Brands

"Doublepow" brand is a professional rechargeable battery manufacturer, we design and manufacture a range of high-quality rechargeable batteries,battery charger and related products.

"Doublepow" products have been quite well-known in the domestic market and inside the industry, more and more consumer selected and use of our products,they can get a very enjoyable experience from the use of our products.

Our Products

1. Lithium ion Battery;
2. NiMH Battery and NiCD Battery,CR2,CR123A Battery Universal Battery;
3. Button Cell Battery(Non-rechargeable);
4. Battery Pack and Other Recycle Rechargeable Batteries;
5. Universal and Multifunctional Battery Charger for 1.2V 3.2V 3.7V 9V Battery; 

If you want to know more informations about us, please Send Us An Inquiry or Email, welcome to visit our company and factory in Shenzhen, China.

Packaging & Shipping

UN 3480 Lithium ion Rechargeable Batteries Packing Instruction and Shipping Regulations

The batteries UN3480 are lithium ion batteries, rechargeable, without equipment.

We strictly obey battery transportation rules UN 3480 and other Regulations.


Lithium batteries are dangerous goods and, as such, require special packaging for transportation.
All domestic and international shipments containing lithium batteries are subject to transport regulations on hazardous goods according to ADR RID, ADN, IMDG, ICAO / IATA Regulations.


Our Rechargeable Battery Certifications

As one of the best professional Rechargeable Battery Manufacturers and Suppliers in China, our company and factory have been awarded the certificate for compliance with the standard ISO9001:2000.

We comply with the Battery Standards,all of our batteries has been tested strictly before leaving factory, to ensure that meet the CE, EMC,SGS requirement and RoHS,UN38.3,MSDS,Drop Test and other laws and regulations.

Battery Charger FAQ

All About Battery Chargers

How well your batteries perform depends on how you use them and how carefully you charge them. That's why a decent battery charger is as important as the batteries you put into it.


And please note that investing in a quality charger is very important as we never give a thought to a battery charger and I have seen a lot of quality batteries being destroyed due to cheap charger and most of the time it’s the charger to blame than the rechargeable batteries.

1. How Many Types of Battery Chargers?

There are a lot of different types of battery charges for various type of batteries.


Depending on the battery chemistry, there are NiMH and NiCD battery chargers(to charge AA, AAA, C, D, and 9 volt NiMH and NiCD batteries), lithium battery charger(to charge 3.2V and 3.7V lithium batteries, like as 10440, 18650, 21700,32700).


Depending on the battery charger function, there are basic Battery charger, multifunctional charger, intelligent quick charger.


Depending on the quantity of battery charger slot, there are 2 slot, 4 slot, 8 slot and Multi-slot charger.

2. How Does a Battery Charger Work?

All battery chargers have one thing in common: they work by feeding an electric current through batteries for a period of time in the hope that the cells inside will hold on to some of the energy passing through them. That's roughly where the similarity between chargers begins and ends!


The cheapest, crudest chargers use either a constant voltage or constant current and apply that to the batteries until you switch them off. Forget, and you'll overcharge the batteries; take the charger off too soon and you won't charge them enough, so they'll run flat more quickly. Better chargers use a much lower, gentler "trickle" charge (maybe 3–5 percent of the battery's maximum rated current) for a much longer period of time.

3. How to Pick the Right Battery Charger?

It is important to choose the right charger for your battery. The right charger will make your battery function as safely and efficiently as possible. There are a few different factors that go into choosing a charger, for example: battery chemistry, charging voltage, charging current, sub-100% chargers, quality levels of chargers.


The most important things are to check that the voltage matches your battery and that the quality is of the level you want.

4.  Could you provide custom service and technology support for battery charger?

Yes, we could provide ODM/OEM service. 

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