4Pcs BL1830 Li-Ion Battery PCB Charging Protection Circuit Board for 18V 1.5Ah 3Ah 6Ah 9Ah BL1815 BL

Built-in dual IC detects cell voltage. and remember the number of uses!Detection and protection battery:Overheat protection, overvoltage protection, undervoltage protection, overcurrent protection, overcharge protection.Stable quality and anti-vibration. It is the best partner of torque wrench and impact drill and angle grinder.PCB design may change due to changes in the supply chain and processing technology.White characters: random characters, don't accept the specified characterscolour: blueMaterial: PCBPackage Contents:4 x Lithium Battery PCB BoardOnly the above package content, other products are not included.Note: Light 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.