Battery Kit 40V with Intelligent PCB Circuit 10pcs 21700 Cells for Brushless Tools Compatible with BL4030 BL4025

High-concerned chemical : None Origin : Mainland China DIY Supplies : Electrical Battery Kit : Easy Installation Battery Kit Lithium Cells : 10pcs 21700 Lithium Cells Power Tools : Replacement For Power Tools Conductivity : Reliable Conductivity Safety Features : Advanced Safety Capacity : High Capacity Protection : Intelligent Protection User Needs : Professional User Power Needs Material Quality : High Strength ABS Plastic Circuit Board : PCB Circuit Board Protection