Large lithium-ion battery pack 12V40ah

Good performance under high and low temperature;Good safety performance;Good cycle life time;No pollution during manufacture.    ItemSpecificationRemark Rated capacity40Ah0.2C rate discharge capacity Minimum capacity40Ah Internal impedance≤7.2mΩ  Nominal voltage12V 

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Good performance under high and low temperature;Good safety performance;Good cycle life time;No pollution during manufacture. 


Large Lithium-Ion Batteries Pack 12V40ah





 Rated capacity


0.2C rate discharge capacity

 Minimum capacity


 Internal impedance



 Nominal voltage



 Cell weight



 Standard discharge


 Constant current



 End-of-discharge voltage



 Standard charge method

 Constant current



 Charge voltage



 Fast charge method

 Constant current



 Charge voltage



 Max continuous discharge current



 Cycle life

2000 cycles

 80% DOD

 Operating temperature

 Charging ambient




 Discharging ambient




 Storage temperature




 Without break,

 distortion, contamination,




Item           Description            Dimensions

L                  Length                  200mm

W                Width                   126mm

H                 Height                  188mm



Large Lithium-Ion Batteries Pack 12V40ah



Basic Performance


(1) Output with high efficiency: Standard discharge current is 0.3C-0.8C, instant impulse discharge current is 10C for 10 seconds.


(2) Good performance under high temperature, it could work under 65°C temperature.The battery structure is safe and good.


(3) Good performance under low temperature.discharge capacity decreases to over 78% under 0°C and discharge capacity decreases to over 70% under -20°C.


(4) Good safety performance:When the pressure inside the battery is too large, the one-way safety valve will release gas and heat to make sure battery perform well. When the internal pressure reaches a certain level, the valve will be open immediately which can protect the battery from burning and explosion.


(5) Good cycle life time, the discharge capacity is still over 80% after 2000 cycle times of single cell(80%DOD).


(6)  It can fast charging. It could be charged to 80% within 20 minutes and charged full with 2-3h.


(7)  Low cost.


(8)  No pollution during manufacture and usage.






Matters needing attention


(1)  Please check if spare parts are completed when open the package and read the operation manual carefully.


(2)  Do not make the battery Short Circuit,do not over charge and discharge.


(3)  Please charge the new battery to full capacity before discharge for the first use.


(4)  The battery pack is fixed with plate and strip before delivery, do not disassemble the plate and strip when using the battery.


(5)  Checking the voltage of battery, normally it is 12.8V-13.2V.


(6)  Fix BMS for battery pack and protect single cell to avoid over charge and over-discharge.


(7)  Rivet or screw is used for battery connector.


(8)  Please use copper part to connect battery packs and fix with hydraulic pressure plier. We could also provide the relevantconnection which fixed with screws.


(9)  The charger used should be approved by our company in order to match with our lithium batteries.


(10)  It will shorten battery cycle lifetime and damage battery due to overcharge and over-discharge if not do according to the above . It won't be within our company warranty.




Requirement for safety assurance


For the sake of safety assurance, please discuss the equipment design, its system and protection circuit of Lithium-ion cell advance. And consult about the high rate current, rapid charge and special application in the same way.


Service line: +86-400-884-7799




Large Lithium-Ion Batteries Pack 12V40ah


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