Product Name: 4s 12V 20A Li-ion LiFePO4battery PCM Battery Management System Model NO.: PCM-L04S20-311 Battery Series: 4s metal Coating: Copper Mode of Production: SMT Layers: Single-Layer base Material: FR-4 Certification: RoHS Customized: Customized Condition: New Specification: 65*30mm Origin: Shenzhen, China HS Code: 8537109090 Product Description We have over six hundreds of PCM/BMS series products for your choice, most of them widely used for Li-ion battery pack, Li-Polymer battery pack, LiFePO4 battery pack and so on.Our main PCB/BMS normally adopt imported raw material for reliable quality, IC from Japan, MOS from USA, Components from Sumsang, Almost Zero RMA.PCM-L04S20-311No.Test itemCriterion1VoltageCharging voltageDC:14.4V 3.6V/cellBalance voltage for single cell3.60V±0.05V2CurrentBalance current for single cell72mA±10mACurrent consumption≤50μAMaximal continuous charging current20AMaximal continuous Discharging current20A3Over charge ProtectionOver charge detection voltage3.9V±0.05VOver charge detection delay time0.5S-2SOver charge release voltage3.8V±0.1V4Over discharge protection)Over discharge detection voltage2.00V±0.08VOver discharge detection delay time10mS-200SOver discharge release voltage2.5±0.10V5Over current protectionOver current detection current55±10ADetection delay time 5ms-60msRelease conditionCut load, Auto Recovery6Short protectionDetection conditionExterior short circuitDetection delay time200-800usRelease conditionCut load, Auto Recovery7ResistanceProtection circuitry(MOSFET)≤20mΩ8TemperatureOperating Temperature Range-40~+85ºCStorage Temperature Range-40~+125ºC