20pcs 3.7V 4.2V 18650 Lithium Lion Battery Protection Board Charger Discharge Protect DD04CPMA

Features Overcharge protectionOverdischarge protectionShort circuit protectionOvercurrent protectionProtect a single 3 7V lithium batteryProtect multiple 3 7V lithium batteries no more than 10 recommended Parameter Overcharge detection voltage 4 280 05VOvercharge release voltage 4 260 05VOverdischarge detection voltage 2 50 1VOvercurrent detection current 1 3AOvercurrent protection 3 20 2ASize 12 6x10 2x2 1mmWeight 0 34 g Note Please charge again and activate the protection board Otherwise there is no voltage output Wiring B connected to the battery negativeB connected battery positiveP connection charger load positiveP connector charger load negative Application 3 7V lithium battery 18650TP4056 charging module Packing includes 20 x 3 7V 4 2V 3A charger overcharge protection board