3pcs 3.7V 4.2V 18650 Lithium Lion Battery Protection Board Charger Discharge Protect DD04CPMA

Features: ? Overcharge protection Overdischarge protection Short circuit protection Overcurrent protection Protect a single 3.7V lithium battery Protect multiple 3.7V lithium batteries (no more than 10 recommended) ? Parameter: ? Overcharge detection voltage: 4.28±0.05V Overcharge release voltage: 4.26±0.05V Overdischarge detection voltage: 2.5±0.1V Overcurrent detection current: 1-3A Overcurrent protection: 3.2±0.2A Size: 12.6x10.2x2.1mm Weight: 0.34 g ? Note: Please charge again and activate the protection board. Otherwise there is no voltage output ? Wiring: ? B-connected to the battery negative B + connected battery positive P + connection charger / load positive P-connector charger / load negative ? Application: ? 3.7V lithium battery 18650 TP4056 charging module ? Packing includes: ?? 3 x 3.7V 4.2V 3A charger overcharge protection board