DIY Supplies: ElectricalType: Electronic Device Battery TesterSuitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries)Charging voltage: 12.6VMaximum output current: 20AMaximum output power / charging power: 252WQuantity: 5 Pccolour:Green + blackMaterial:metalsize:5.9*2cmAttention:Do not mix the good battery and poor battery to use.The internal resistance of 3 battery capacity are closer will be better.Please buyers know the professional knowledge of this module before buyingPrecautions:1.Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip.2.After connection,it need to first charge activation, then will have the output.Package Contents:5 x PCB Protection BoardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.