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Customized small size deep cycle 18650 12v 12 volt rechargeable lithium Li ion lifepo4 battery pack

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Quick Details

Connector: 5.5*2.1mm DC Jack Input/output
Place of Origin: Guangdong China
Warranty: 3months-1year
Cycle life: 500-1000 Times
Product Name: Customized battery pack
Battery Size: 18650
Model Number: 12v 18650
Weight: 500g
Certification: MSDS
Brand Name: Doublepow
Product Keywords: Lithium Battery 12v
Manufacturer: Shenzhen China
Key words: Rechargeable 18650 battery pack
Features: Deep Cycle Battery 12V
Battery Case: according to the customer request
Application: Toys,Power Tools,Home Appliances,Consumer Electronics,BOATS,Golf Carts,SUBMARINES,Electric Bicycles/Scooters,Electric Folklifts,electric vehicles,Electric Wheelchairs,Electric Power Systems,Solar Energy Storage Systems,Uninterruptible Power Supplies,Solar System
Protection: PCB Safety Function
Packaging Detail: Standard Packing
Selling Units: Single item
Single package size: 10X5X5 cm
Single gross weight: 1.2 KG
Package Preview: https://sc04.alicdn.com/kf/H65fec9fbf2264b5cbcc907c3f3a8f1f28.jpg_640x640.jpg,https://sc04.alicdn.com/kf/H8e70ff5aa5804819a9da1cf2b424f686d.jpg_640x640.jpg
Shenzhen Doublepow Energy Technology Co., Ltd.
Trading Company
Response Time
On-time delivery rate
US$ 40,000+
R&D staffs
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Product Description
Product Name
Customized 3S 3S2P 3S3P 3S4P 3S5P 3S6P 3S7P 18650 12V rechargeable lithium Li ion lifepo4 battery pack
One single cells of 2600mAh,assemble them with safety circuit, protect li ion battery from over over- load, over and under voltage, short circuit and temperature control. It’s commonly used for flashlight, emergency light, camera, wireless headset, and any another applications that need li ion battery as power supply.…

Li ion batteries packs are assembled with 18650 cylindrical cells to meet many special large-scale electric modules, like telecom basic station, solar energy savings, etc. Doublepow battery has more than 10 professional R& D engineers who are devoted themselves to working out the best kind battery packs for your electric modules.…
More Series batteries and Charger
If you need other series battery, 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!
Battery Series
Battery Type
Battery Size
AA / AAA / C / D
AA / AAA / C / D
10440 ~ 18650 ~ 32700
10440 ~ 18650 ~ 26650

1.5v: AG1 ~ AG6 ~ AG13 
3v: CR1220~CR2032~CR2450
AA / AAA / C / D
Custom size
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Company Introduction
Shenzhen Doublepow Energy Technology Company Limited
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 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 Brand
"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, their evaluation and feedback are very positive, they can get a very enjoyable experience from the use of
our products.
Our Quality Assurance
Continually expanding our technical ability, our BRAND has become synonymous with quality with most of our customers domestic and
worldwide. Our management system is more than a set of process, it ensure products quality and delivery on time. 
Our Factory
have obtained ISO 9001:2008 Certification, 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. 

With professional R&D team, experienced workers and advanced equipments, we are determined to provide you high-quality products.
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.

All About 18650 Li-ion Battery Pack
A battery pack is a set of any number of identical batteries or individual battery cells. They may be configured in a series, parallel or a mixture of both to deliver the desired voltage, capacity, or power density. 18650 Li-ion cells are a great way to power Projects. Which provides a nominal voltage of 3.7V which is not sufficient for most of the application for let's say you want to power a BLDC motor with an ESC which requires 9V to start. So we need more voltage which can be achieved by connecting them in series. We will show you how you can make a 18650 Li-ion Battery Pack with a BMS circuit and all the things you need to know before you built one!
1. Everything We Need for Building a 18650 Battery Pack
1. 18650 Li-ion cells - 18650 batteries are used for powering everything from laptop batteries to electric vehicles. It is a standardized type of lithium-ion battery, cylindrical in shape and measuring 18mm in diameter by 65mm in length (give or takea few 1/10s of a millimeter).

2. BMS - A battery management system (BMS) is an electronic system that manages a rechargeable battery (cell or battery pack), such as by protecting the battery from operating outside its safe operating area, monitoring its state, calculating secondarydata, reporting that data, controlling its environment, authenticating it and / or balancing it.

3. Plastic Spacer- Replacing the traditional general adhesive with a professional battery holder, the combination is very convenient, the connection is more firm, and the battery maintenance is also convenient. It is the best choice for battery packs. It makes building battery pack much less painful.

4. Spot welder - One of the purposes of spot welding is to join 2 or more components together in a mainly permanent fashion. you can buy one or built one.

5. Nickel Ribbon - Nickel ribbon is commonly used in battery building due to its ease of use in spot welding and soldering as well its high corrosion resistance over time.
2. Check the Battery and Charge Them Up!
First, we need to check the capacity of all the cells & make sure all the cells are at the same voltage. It is mandatory that all the cells are at the same voltage else cells will end up charing each other and it can lead to unexpected results.
3. Calculations for the battery pack voltage and capacity
18650 cell can provide a Nominal voltage of 3.7V, Minimum voltage of 3V and Maximum voltage of 4.2V. So if we consider nominal voltage, connecting 6 cells in series will give us 22.2V which is a 6S1P Configuration. Where 6S means 6 Cells in series and 1P means 1 cell in Parallel. By adding another 6 Cells in parallel we can not only double the capacity but also the amount of current Pack can deliver.
4. Building the Pack and Spot Welding
For building the battery pack we need tiny black Plastic spacers which snap like Lego and can be very useful as we don't need to use adhesive instead. Now make 2 pairs of 6 plastic spacers, Insert the cells in alternation pattern. Now we measured the spacing between 2 cells and it was about 25mm. So I used Nickel Ribbon marked 25mm on it and used sharp scissors to snap it.
Now Place the Nickel pieces on top of cells and make a series connection use a spot welder to fuse nickel ribbon and battery top.
5. Adding BMS
Now we can add and plug and call it for the day but we can also add a BMS which adds over charge, over discharge and some of the also add Balance charging to the battery pack. we just have to solder it to the battery pack as shown on the board. Also, some BMS like mine does not offer Balance charging so you need to add and Balance charging connector and You are done!
If you want to know more informations about our ODM/OEM service,
Welcome to visit our company and factory in Shenzhen, China.