TLILY BL1830 LI-Ion Battery Plastic Case Protection Board pcb Input 21700 for 18V BL1850 BL1820

Feature: It Can Fit 10pcs INR21700 Battery cells . DIY The capacity for your Machine battery . High compatibility with original device and more Help to repair and assemble batteries pack PCB Circuit Board with single cell protection test Only for people who have practical experience in battery assembly. color: Black Material: ABS+PC+Metal Package Contents: 1 set battery case Only the above package content, other products are not included. Note: Light reflection 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.