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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

11.1V3S)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/CV4.2V/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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