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7S 25.9V Lithium Ion Battery Packs

size: L130*W20*T72mm

Descriptions: 7S 25.9V li-ion battery pack for electric bicycle

7S 25.9V Lithium Ion Battery Packs

18650/7S1P  Li-ion Battery Pack 25.9V/2.2Ah
Item Specification Remark
Nominal capacity 2.2Ah SAMSUNG  Cell: 18650-22P
Nominal voltage 25.9V 3.7V / 1Cell
Charging voltage 29.4V±0.05V 4.2V / 1Cell
Charging method CC/CV (Constant-current and -Voltage with Limited current
Standard charging time 1A/3hour2A/1.5hour Battery capacity÷charging current×1.5
charging current 1A 0 ~ +40
Maximum charging current 2A 0 ~ +40
Continuous discharge current 5A -20 ~ +60
Discharge cutoff voltage 16.8V 2.4V / 1Cell
Short circuit protection Exterior short circuit Automatic recovery 
Internal resistance 200mΩ  AC Impedance 1kHz
Cycle life ≥500
Operating temperature Standard Charge 0 ~ +40
Standard Discharge -20 ~ +60
Outline dimension L130*W20*T72mm Length x wide x height
Protection  Circuit  Module:PCM-7S1P
Maximal continuous charging current 5A
Maximal continuous Discharging current 5A
Over-charge detection voltage 4.25±0.025V single cell
Over-charge release voltage 4.05±0.05V single cell
Over-charge detection delay time 0.5S—2S single cell
Over-discharge detection voltage 2.50±0.062V single cell
Over-discharge release Voltage 3.0±0.10V single cell
Over-discharge detection delay time 10mS—300mS single cell
Over-current  detection 20±3A can adjust
Over-current delay time 5ms—20ms
18650/7S1P  Li-ion Battery Pack 25.9V/2.2Ah

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