Electronic system protecting 1S battery against discharging and at the same time a charger for these batteries. It allows you to build a safe battery pack that does not need to be charged with special Li-ion chargers. The 2 in 1 module will keep the cells in the best conditions, preventing them from overcharging and over-discharging. One module replaces the charger and the security module here. Product features Short circuit protection. Overcharge protection. Over-discharge protection. Overcurrent protection. They can be used for various 3.7V lithium cells. Compact dimensions and low weight Ensure safe use of the battery Technical data Maximum charging voltage: 4.25 ± 0.05V Minimum discharge voltage: 2.54 ± 0.1V Max. charging working current: 2A Max. discharge working current: 2A Dimensions: 67 * 16 * 1.0mm https://elecena.pl/product/22620932/1s-3a-3-7v-bms-pcm-pcb-li-ion-charging-protection-module 2023-02-23 https://elecena.pl/product/22620932/1s-3a-3-7v-bms-pcm-pcb-li-ion-charging-protection-module 2025-10-29