Home->PCM for LiFePO4 Battery Packs ->For 6S~10S Packs (19.2-32V)-> For 8S Packs (25.6V)

Battery Protection Circuit Module (BMS/PCM) for 8S 25.6V LiFePO4 Battery Packs

Part number: HCX-D682V1

Features and Benefits

 1. Protection Circuit Board for 25.6V 8S LiFePO4 battery pack;

2.PCM applies for 8 cells LiFePO4 battery pack with E-Switch integrated, E-Switch can totally turn off the output;

3.To prevent the battery packs from overcharge,overdischarge,over current, over temperature ,short circuit ;

4.With cell balance/equilibrium function;

5.Compatible with LiFePO4 cells; 

6.How balancing function works? After battery pack is fully charged. PCM will detect each cell's voltage and trim higher voltage down until other cells reach the same voltage level. Therefore, it helps cells have longer service life.

7.PCM comes with all the voltage detection wires and connectors.

Specifications

 

Item

Contents

Criteria(Adjustable)

1

Model

HCX-D682V1 / BQ77905

 8S-130A working current

2

Voltage

Charging voltage

28.8V

3

Current

Maximal continuous charging current

40A

Maximal continuous discharging current

130A

Current consumption

≤50μA

4

Overcharge Protection

Over charge detection voltage

3.6V~3.9V(Adjustable)

Over charge detection delay time

0.5S-1.5S

Over charge release voltage

3.5V~3.8V(Adjustable)

5

Over Discharge Protection

Over discharge detection voltage

2.0V~2.5V(Adjustable)

Over discharge detection delay time

0.5S-1.5S

Over discharge release voltage

2.0V~2.5V(Adjustable)

6

Over Current Protection

(1st Protection)

Over current detection current

Adjustable

Detection delay time

700mS

Release condition

Cut load, automatically recover

7

Over Current Protection

(2nd  Protection)

Over current detection current

Adjustable

Detection delay time

90mS

Release condition

Cut load, automatically recover

8

Temperature Protection
(Multi NTC’s are available)

Charge over temperature protection

50°C

Discharge over temperature protection

70°C

Charge under temperature protection

-5°C

Discharge under temperature protection

-20°C

9

Short Circuit Protection

Short circuit detection current

>=800A

Detection delay time

360uS

Detection condition

Cut load, automatically recover

10

Balance

Balance voltage for single cell

3.6V±0.015V

Balance current for single cell

36mA±5mA

11

Resistance

Inner resistance

≤20mΩ

12

Temperature

Operating temperature range

0 ~ +85°C

Storage temperature range

0 ~ +85°C

13

Size  (L*W*T)

L220mm*W100mm*T12mm

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