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LWS manufactures BMS 3.4Ah 5A 8A battery management system 11.1v lithium-ion BMS 3s, using Smbus communication protocol

Hardware BMS

LWS-3S8A-1046 V1.0


Product Detail

11.1V(3S)Lithium-ion battery pack protection circuit module specification
model:LWS-3S8A-1046(3S)3.4AH
Serial numberTest items25℃ environmentstandard
1Communication ProtocolSMBUSEcommunicationsmbc=SDA/smbd
2VoltageCharging voltageDC:12.6V CC/CV(4.2V/1Cell)
3capacityBattery pack design capacity3.4AH
Maximum battery capacity 3.4AH
4CurrentCurrent consumption (software)<400uA
Current consumption (sleep mode)<150uA
Maximum continuous charging current5A
Maximum continuous discharge current5A
5Overcurrent protection(One pole protection)Overcharge detection current30A
Detection delay time1s
Over discharge detection current30A
Detection delay time1s
6Overcurrent protection(Two-pole protection)Overcharge detection current32A
Detection delay time1s
Over discharge detection current32A
Detection delay time1s
7Single cell overcharge protectionOvercharge detection voltage4.25±0.025V
Overcharge detection delay time1S
Overcharge recovery voltage4.15±0.05V
8Single over discharge protectionOver discharge detection voltage2.7±0.1V
Over discharge detection delay time1s
Over discharge recovery voltage3.0±0.05V
9Short circuit protectionDetection statusP+,P-Short Circuit
Detection delay200-500us
Restore StatusCut load
10Internal resistanceProtection line≤20mΩ
12First level protection,Over temperature protectionCharging high temperature protection55℃±5℃
ChargeDelay time2s
Over temperature charging recovery50℃±5℃
Discharge high temperature protection60℃±5℃
Discharge delay2s
DischargeDelayed recovery time55℃±5℃
Charging low temperature protection-5℃±5℃
Discharge low temperature protection-20℃±5℃
13temperatureOperating temperature range-20~+85℃
Storage temperature range-20~+125℃


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