BMS Charger Protection Board for Li-ion 18650 HXYP-2S-A18 2S 4A 7.4V

From the shop's description

Features: High-precision voltage detection function for each battery Overcurrent detection function The MOS tube can control the charging and discharging of the battery Wide Operating Temperature Range: -40°C ~ 85°C Low current consumption Specifications: Charging voltage: DC 9V CC/CV (max: 12V) Current Single current consumption (consumption) ≤ 6uA Maximum sustained discharge current: 4A Overload protection Voltage Overcharge detection voltage: 4.29V Accuracy ≤ ± 0.025V Overcharge detection delay time: 1s Overcharge recovery voltage: 4.05V Accuracy ≤ ± 0.025V Over-discharge protection Over-discharge detection voltage: Accuracy 3V ≤ ± 0.1V Over discharge detection delay time: 128ms Over discharge recovery voltage: 3.2V Accuracy ≤ ± 0.1V Temperature Operating temperature range: -40°C~85°C Storage temperature range: -40°C~125°C Overcharge protection, over-discharge protection, short circuit protection, over-current protection Product size: about 3.50×1.70cm Package Included: 1x 2S 18650 Lithium Battery Charger Protection Board 4A 7.4V