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Active Balancer 4s 25A LFP LiFePO4 12V 12.8V BMS with RS485 Can
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Active Balancer 4s 25A LFP LiFePO4 12V 12.8V BMS with RS485 Can

LWS® Active Balancer 4S 25A LFP LiFePO4 12V 12.8V BMS with RS485 Can. With over a decade of experience, our BMS boasts robust engineering, intelligent monitoring, and CE/RoHS compliance. Enjoy efficient performance and safety in a compact package.

Model:LWS-4S25A-732-R01

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Product Description


Product Introduction

Active Balancer 4s 25A LFP LiFePO4 12V 12.8V BMS with RS485 Can is a high-performance battery management system designed specifically for 4-series LFP LiFePO4 batteries. With a 25A balancing capability, it ensures optimal cell performance and longevity. Equipped with RS485 Can communication, it allows for seamless integration and monitoring of your battery system.


Product Parameter (Specification)

LWS-4S15A-731-R01

Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
Model: LWS-4S20A-732-R01 (4S)
No. Test item Criterion
1 Voltage Charging voltage DC:14.4V CC/CV
Balance voltage for single cell 3.725±0.025V
2
 Current Balance current for single cell( Pulse equalization) 15-38mA
Current consumption
≤30μA
Maximal continuous charging current ≤20A
Maximal continuous Discharging current ≤20A
3 Over charge Protection( single cell)
 Over charge detection voltage for single cell
 3.85±0.025V
Over charge detection delay time
 500mS-1500mS
Over charge release voltage for single cell
 3.75±0.05V
4 Over discharge protection( single cell)
 Over charge detection voltage for single cell
 2.3±0.08V
Over charge detection delay time
 500ms-1500ms
Over charge release voltage for single cell
 2.5±0.1V
5
 Over current protection
 1-level discharge overcurrent detection current 60±10A
2-level discharge overcurrent detection current
120±20A
Charge overcurrent detection current  120±20A
Charge overcurrent detection delay time 100ms-500ms
1-level discharge overcurrent detection delay time
 10ms-50ms
2-level discharge overcurrent detection delay time
 1ms-5ms
Release condition
 Cut load or charge activation
6

Short-circuit protection (Used and

passed the short circuit test of 6AH

LFP battery pack)


Detection condition
 External short circuit
Detection delay time  200-500us
Release condition Cut load or charge activation
7

Resistance

Protection circuitry (MOSFET)
 ≤20mΩ
8

Temperature protection


Charging high temperature protection
 60±5ºC
Charging high temperature protection release 50±5ºC
Discharging high temperature protection 82±5ºC
Discharging high temperature protection release 72±5ºC
8

Temperature



Operating Temperature Range
 -20~+60ºC
Storage Temperature Range -20~+85ºC



Product Details


Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit ,temperature detecting protection and auotmatically voltage balance function .with high end electronic components (High End IC and MOSFET ) ,simple structure design will let it have more stable quality working performance , Flexible application ( it can be used for less series battery by leaving some connection pins at empty status ),full set of protection measures let it works well without any infulence from external unexpected accidents.



Notes


1) Wire connection strictly according to the drawing, do not intentionally short circuit.
2) Before charged, need to connect the cables first.
3) When the group of battery is connected in series, ensure that the voltage of each group of batteries voltage is the same. If not, fill each group of batteries separately before connecting them in series. In discharge tests, the group of cells with the fastest voltage drop is the differential cell.

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