Battery Management System

     3s~4s Protection Board
     5s~9s Protection Board
     10s~16s Protection Board
     17s~32s Protection Board

    Charger and Adapter

     Lithium Battery Charger
     Lead-Acid Battery Charger
    Nihm Battery Charger
     DC-DC Battery Charger
    AC DC Adapter

    Lithium Battery Pack

     2s~3s Lithium Battery Pack
     4s~6s Lithium Battery Pack
     7s~10s Lithium Battery Pack
     11s~20s Lithium Battery Pack



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Mobile: +86-13632959016

   Tel: +86-755-21006416(10 lines)
   Fax: +86-755-21006416

2S4P 18650 7.4V Li-ion Battery Pack

Model Number: WMP-L02S4P

Item Specification Remark
Nominal capacity 5200mAh Sanyo cell UR18650A
Nominal voltage 7.4v 3.7v / cell
Charging voltage 8.4v±0.5v 4.2v / cell
Charging method CC / CV Constant current and voltage with limited current
Standard charging time 2000mA/6hrs, 3000mA/4hrs Battery capacity / charging current x 1.5
Charging current 5200mA(0.5C) 0 ~ +40℃
Max charging current 10400mA(1C) 0 ~ +40℃
Continuous discharging current 10400mA(1C) -20 ~ +60℃
Discharge cutoff voltage 4.8v 2.4v / cell
Short circuit protection Exterior short circuit Auto recovery
Internal resistance ≤200mΩ AC impedance 1kHz
Cycle life ≥500  
Operating temperature Standard charge ℃0 ~ +40
Standard discharge -20 ~ +60℃
Dimension size L80 x W54 x T68 (mm) Length x Wide x Thickness
Pre - wired Red = Positive, Black = Negative
Protection Circuit Module : WMB-L02S10-014
Max continuous charging current 10A
Max continuous discharging current 10A
Over-charge detection voltage 4.35v ± 0.025v Single cell
Over-charge release voltage 4.05v ± 0.05v Single cell
Over-charger detection delay time 0.7s ~1.3s Single cell
Over-discharge detection voltage 2.3v ± 0.062v Single cell
Over-discharge release voltage 3.0v ± 0.01v Single cell
Over-discharge release delay time 89 ~167mS Single cell
Over-current detection 25A ± 3A  Adjustable
Over-current delay time 6.7 ~ 13.9mS
Company Address: Room D1-D2, 13th Floor, Jin Tong Sheng Building , Da He Road,  Guan Lan Township, Long Hua New District, Shenzhen, 518126, China.
Tel: +86-755-21006416, Fax: +86-755-21006416, E-mail:
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