lifepo4 12v 40ah lithium battery

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US $50-80 / Piece | 50 Piece/Pieces (Min. Order)
Supply Ability:
50000 Piece/Pieces per Month
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Quick Details
Place of Origin:
Guangdong, China (Mainland), China
Brand Name:
Model Number:
Nominal Voltage:
Nominal Capacity:
Battery type:
12v battery lifepo4 12v 40ah lithium battery / 12v 40ah battery
Max charge voltage:
standard charge method:
cut-off voltage:
nominal voltage:
cycle life:
0 V charge:
brand name:
Packaging & Delivery
Packaging Details
90-400pcs for each box
Size of box: 280mm x 228mm x 263mm
Weight of each box is less than 10Kg


  lifepo4 12v 40ah lithium battery / 12v 40ah battery


1. Long cycle life for more than 2000 times

2. High specific energy 

3. Good performance at high temperature 

4. Low impedance

5. Lower self-discharge

6. Suit for big current discharge

7. High reliable and safety characteristics

8. Strong charging acceptance and

    quick-charging capability

9. Environmental Friendly

10. Large capacity and good shock resistance

1. Rated Capacity:                                      40000mAh ( 0.2C )

2. Nominal Voltage:                                     12.8V ( operation voltage )

3. Voltage at end of Discharge:                    10.0 ( discharge cut off voltage )

4. Charging Voltage:                                   16.8V

5. Internal Impedance:                               <8mΩ ( AC 1KHz)

6. Standard Charge:                                    CC/CV ( charge time: approx 4.0h )

7. Standard Discharge:                                0.2C ( cut off voltage 10.0V )

8. Max Continuous Charge Current:               1.0C

9. Max Continuous Discharge Current:            1.0C



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Information for Safety


! Notice

1. Handling of cells

— Don't charge the cells and keep them in a charged state for a long time. ( Display units 

    should dismantle the battery )

— Avoid any short-circuit. It will cause the leads to get hot and lose electronic functions.

— Soft package is easily damaged by sharp objects such as needles and knives. Avoid touching

    the cells with sharp objects when handling and storing.

— Next to the leads is the sealed edge. Don’t bend or fold the sealing edge as it is sensitive to


— Don’t open the folded edge on the sides of the cell.

— Don’t bend the tabs as the tabs are sensitive.

— Avoid mechanical shock to the cells.

— Don’t put the cells into an oven, washing machine or any high-voltage container.

— Don’t use a charger without a safety certification. Use only a recommended charger.

— You should immediately stop charging if the cell overheats, emits an odor, changes color,

    changes shape, etc.

— Battery should be storage away from children.

— Adults should supervise the use of batteries by children.

— Before using batteries, please carefully read and understand the handling guidelines.

— Avoid electro-static discharge when using, charging, and storing cells.

— Avoid putting the battery in contact with metal conductors such as neck chains, barrettes, or

    bolts, etc.

— Don’t use metal conductors to connect the positive and negative leads together.

— Avoid errors during assembly by contacting the positive lead with the negative lead.

— Avoid use cell with serious deformation.

— Do not directly solder the pack or battery and pierce the battery with a nail or other sharp 


2. Notice for Designing Battery Pack

—  Package Design

    — The battery pack should have sufficient strength and the battery should be protected

        from mechanical shock.

    — No sharp objects should be inside the pack containing the battery.

— PCM Design

     — The overcharge threshold voltage should be less than 3.65V (single pack).

     — The over-discharge threshold voltage should not be lower than 2.0V (single pack).

     — The PCM should have short circuit protection.

3. Notice for Assembling Battery Pack

— Tab connection

    — Ultrasonic welding or spot welding is recommended to connect the battery with the PCM

        or other parts.

    — If the tab is to be soldered to the PCM, the instructions below are very important to

        ensure battery performance.


        — The solder iron should be temperature controlled and ESD safe. 

        — Soldering temperature should not exceed 350±10°C.


        — Soldering time should not be longer than 3 seconds.


        — Soldering times should not be fewer than 5.


        — Let the battery tab cool down before soldering again.


        — Direct heat to the cell body is strictly prohibited. The battery will be damaged by

            heat above approx. 60°C.

— Cell fixing 

     — The cell should be fixed to the battery pack by its large surface area.

    — The should be no sharp edges at the assembly contact area.

     — Cells must be held firmly in the battery pack; movement is not allowed.


! Others 

— Disassembly may cause an internal short circuit to the cell, which may cause out-gassing,

    fire, or other problems.

— Lithium ion battery should not have liquid flowing, but in case the electrolyte come into

    contact with the skin, or eyes, physicians, we recommend as below:

    — The electrolyte touch eyes: Flush the electrolyte immediately with fresh water for 15min.

        and medical advice is to be sought.

    — The electrolyte touch skin: Flush the electrolyte immediately with a great deal of fresh


    — Breath the released gas: Go outside to breath flash air.

    — Mis-eaten: Go to take some medical advice.

— Prohibition of dumping of cells into fire.

— The cells should never be soaked with liquids such as water, drinks or oil.

— Prohibit using the cells mixed with different manufactories. Prohibit using new cells mixed 

    with old ones.

— Prohibit using damaged cells. 


! Recommended Notice

— Using cells on specified facilities only.

— Using cells in normal ambition temperature. Temperature: -10~35°c, Relative Humidity:


— Using the cells, away from heat source. Don't let children play with cells. Don't drop cells.

    Charge cells with specified charger.

— Avoid the positive pole short cutting with the negative one. Avoid the cells affected with


— Useless cells should be deal with in a safety way. Don't drop them into the water or fire.