Cycle Life
The LiFePO4 Battery Packs range is published at more than 2000 cycles with 80% capacity remaining at 100% DOD.
12V lithium ion battery
12V lithium ion battery 26650 LiFePO4 batteries 4000mAh with long cycle life. The single 26650 cell capacity is 4000mAh with stable performance.
Category: LiFePO4 Battery Packs
Product Overview
12V Lithium Ion Battery 4000mAh 26650 Battery With PCM
Size: 27*68*112mm. Model: IFR26650 4S1P.
Key Benefits
Stated Electrical Data
Nominal voltage 12.8V, typical capacity 4000mAh. The complete parameter table is published below, not summarised.
Built-in Protection
Automatic protection for over-charge, over-discharge, over-current and over-temperature, with internal cell balancing.
Working Range
Operating temperature is published per state. Charge: 0~45℃; Discharge: -10~60℃.
Built To Order
Capacity, arrangement, case, terminal, cable, connector and custom logo are all specified by the customer. Dimensions are made according to the device's request.
Application Scenarios
Application: solar streetlight, energy storage system, solar system, power energy storage etc.
Who It Is For
- Solar street light assemblers who buy a finished 12V or 24V pack
- Energy storage integrators needing 48V modules with RS485 or CAN
- Equipment builders replacing a sealed lead acid block of a fixed size
Problems It Solves
- Packs that fit the electrical spec but not the box
- Systems with no cell balancing, where one weak cell ends the pack
- Lead acid weight in a product that has to be carried or pole mounted
Specifications
12V Lithium Ion Battery 4000mAh Data Sheet
| Item | Rating | Note |
|---|---|---|
| 1.1 Capacity | Typical: 4000mAh | Discharge: 0.2CmA |
| Min.: 3900mAh | ||
| 1.2 Nominal Voltage | Average 12.8V | |
| 1.3 Discharge Cut-off Voltage | 8.0V | |
| 1.4 Charge Current | 800mA | Standard Charge |
| 1.5 Charge Voltage | 14.6V | |
| 1.6 Charge Time | Approx 6h | Charge: 0.2CmA |
| 1.7 Max. Charge Current | 4A | |
| 1.8 Continuous discharge current | 800mA | |
| 1.9 Max. discharge current | 4A | |
| 1.10 Weight | Approx 360g | |
| 1.11 Operating Temperature | Charge: 0~45℃ | |
| Discharge: -10~60℃ | ||
| 1.12 Storage Temperature | <1 month: -20~45℃ | Recommended storage temperature: 20℃, at the shipment state |
| <3 month: -20~35℃ |
Data sheet published by Sunder Battery for this model.
12V 26650 LiFePO4 Battery 4000mAh Advantages
Long cycles, more safety, over-charge protection, over-discharge protection, over voltage protection, over current protection, short circuit protection.
Comparison With Other Products In This Range
The 12V lithium ion battery is one line of the range below. Compare the capacity, dimension and maximum discharge current before deciding, because a pack sized on capacity alone is often the wrong pack.
| Model | Nominal voltage (V) | Nominal Capacity (Ah) | Dimension T*W*H (mm) | Cycles | Max. discharge current (A) | Weight (Kg) |
|---|---|---|---|---|---|---|
| IFR26650-12010 | 12.8 | 10 | 151*98*95 | ≥2000 | 20 | 1.6 |
| IFR26650-12015 | 12.8 | 15 | 155*115*75 | ≥2000 | 30 | 2.2 |
| IFR26650-12020 | 12.8 | 20 | 182*77*170 | ≥2000 | 40 | 2.6 |
| IFR26650-12030 | 12.8 | 30 | 267*77*170 | ≥2000 | 60 | 3.8 |
| IFR26650-12040 | 12.8 | 40 | 223*120*175 | ≥2000 | 80 | 4.8 |
| IFR26650-12050 | 12.8 | 50 | 223*150*178 | ≥2000 | 75 | 5.8 |
Table published by Sunder Battery for this product family.
Customization Options
Sunder is an OEM and ODM manufacturer. The list below is what is decided by the customer rather than by us.
- Series and parallel arrangement to reach the voltage and capacity you need
- Case, terminal and cable length to match the equipment it replaces
- Connector fitted to your mating part
- Custom logo and label
- Dimensions made according to the device's request
What we need from you. Voltage, capacity or run time, peak current, the space
available, the connector on your board and the operating temperature range. A drawing or the pack you use now
answers most of these at once.
Use Guide
Charge with CC then CV
Charge at constant current, normally 0.2C to 0.5C, until the cell reaches 3.65V, then hold that voltage until the current tails off. At pack level that is 14.6V.
Respect the charge floor
Charge between 0℃ and 45℃. Charging a frozen pack is the most common way an outdoor battery is damaged, and it is a controller setting.
Do not rely on the protection board
The board is a backstop against faults, not a charging strategy. Set the charger correctly first.
Store around 20℃
Store in the shipment state at roughly 20℃. The storage window per duration is published in the parameter table.
Questions About The 12V lithium ion battery
What are the nominal voltage and capacity of the 12V lithium ion battery?
Nominal voltage 12.8V and typical capacity 4000mAh. The full parameter table is published on this page.
How many cycles does it give?
The LiFePO4 Battery Packs range is published at more than 2000 cycles with 80% capacity remaining at 100% DOD.
What charge voltage should I use?
14.6V, charged constant current then constant voltage. The normal charge current is 0.2C to 0.5C and the maximum is 1C.
What does it weigh?
Approximately 360g. The dimension and weight for every model in the range are in the model list on this page.
Can you build this to our own size and connector?
Yes. The charge and discharge current can be customised and the dimension is made according to the device's request. Custom logo is available.
Can I get a sample first?
After price confirmation, you can request our battery samples to test.
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