Protection Circuit Module Specifications For 3.2V LiFePO4 Battery Pack
Protection Circuit Module Specifications For 3.7V Li-ion/Li-polymer Battery Pack

No

Test   item

Criterion

Lifepo4 

Li-ion/Li-polymer

1

Voltage

Charging voltage

DC3.6VCC/CV
(3.6V/cell)

DC:4.2V CC/CV
(4.2V/cell)

Balance voltage for single cell

　…….

　…….

2

Current

Balance current for single cell

　…….

　…….

Current consumption for single cell

≤10μA

≤10μA

Max. continuous charging current

Max. cont. discharging current

3

Over charge
protection
(single cell)

Over charge detection voltage

3.9V±0.025V

(optional)

4.28±0.025V

(optional)

Over charge detection delay time

0.5-2.0S

0.5S—2.0S

Over charge release voltage

3.80±0.05V

4.05/4.10 ±0.05V

4

Over discharge
protection
(single cell)

Over discharge detection voltage

2.0±0.05V

(optional)

3.0±0.05V

(optional)

Over discharge detection delay time

10-300mS

10-300mS

Over discharge release voltage

2.3±0.05V

3.0±0.1V

5

Over current
protection

Over current detection voltage

depend on the
above points

depend on the
above points

Over current detection current

final data fixed

from actual test

final data fixed

from actual test

Detection delay time

5-20ms

5-20ms

Release condition

Cut load,

Auto release

Cut load,

Auto release

6

Short
protection

Detection condition

Exterior short circuit

Detection delay time

100～500us

Release condition

charge up

7

Resistance

Protection  circuitry

≤50mΩ

8

Temperature

Operating Temperature Range

-40～+85℃

Storage Temperature Range

-40～+125℃

9

Dimension

￠17.5mm

Optional
Parameters:

Over charge detection voltage (V)

3.9V±0.025

4.25±0.025

4.3±0.025

4.325±0.025

Over charge release voltage(V)

3.80±0.05

4.05±0.05

4.1±0.05

4.075±0.025

Over discharge detection voltage

2.0±0.062

2.5±0.062

2.4±0.1

2.5±0.05

Over discharge release voltage(V)

2.0±0.062

2.5±0.062

3.0±0.062

2.9±0.05