52V 40Ah Rechargeable Lithium Ion Battery Pack 21700 4.5Ah Cell

18650 Li-ion batteries are the battery of choice when designing for higher voltage and current requirements. Li-ion have relatively low self-discharge rates, and are capable of high discharge currents and better performance than nickel and lead based batteries.

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Electric bicycle

Electric motorcycle

Electric tricycle

Electric boat


Energy storage

RC toy

Led light

Street light


Medical Equipment



Customized battery pack service are warm welcome, which is one of our best advantages. 

Battery cell can be choose for China brands or LG SAMSUNG SONY PANASONIC

BMS parameter could change based on application

Design battery size and solution in free service

Buyer advise connector type in order to assembly accordingly.

VODNO provide specification of battery and help to get certification.




Nominal voltage




Minimum: 39.5Ah

Operation voltage


End of charging:59V±1V

End of discharging:39.5V±1V




Approx. 10 kg

Standard charge method


Constant current and constant voltage (CC/VV), current is 20A, voltage is 58.8V±0.5V, cut-off current is 0.8A.


Max.continuous charge current



Standard discharge


current=40A,cut-off voltage 39.5V±1V


Max.continuous discharge current


≤ 90A

Max.pulse discharge current


180A (5S)

Cycle life

500 cycles

Protection functions


Protection of short-circuit      (500µs)

Protection of over charging     (4.25±0.25V)

Protection of over discharging  (2.8±0.1V )

Protection of over current       (360A / 20ms)

Protection of high temperature  (75±5℃)

Connecting plug

XT90 (mother),length of wires 8#: 200mm

Packing material

Epoxy resin board

Operating Temperature


Charge: 0 to 45℃         

Discharge: -20 to 35℃      

Storage Temperature


1 month: -10 to 45℃        

3 month: -5 to 35℃         


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