PCB 4S 12,8V 7A with balancer

Protection Circuit Module For 3/4S Li-ion/Li-polymer/LiFePO4 Battery Packs

Model BM978

Voltage

Charging voltage

CC/CV:Li-ion/Li-po (4.2V/cell),   Lifepo4 3.6V/cell

Balance voltage for single cell

Li-ion:4.20±0.025V, Lifepo4:3.6V±0.025V

Current

Balance current for single cell

0-85mA (can adjust)

Current consumption for single cell

≤20μA

Maximal continuous charging and discharging current 7A

Over-charge Protection

Over charge detection voltage

3.8-4.4V (can adjust)

Over charge detection delay time

0.96S—1.4S

Over charge release voltage

3.8-4.4 (can adjust)

Over-discharge Protection

Over discharge detection voltage

1.9-3.1V (can adjust)

Over discharge detection delay time

115S—173S

Over discharge release voltage

1.9-3.1V (can adjust)

Over-Current Protection

Over current detection voltage

0.6V

Over current detection current

8-30A (can adjust)

Detection delay time

7.2ms—11ms

Release condition: Auto Release

Short Protection

Detection condition

Exterior short circuit

Detection delay time

200-500us

Release condition

Auto Release

Resistance

Protection circuity MOSFET)

≤50mΩ

Temperature

Operating temperature range

-40～+85℃

Storage temperature range

-40°C+125°C

Size

L50*W21*T4mm