Tool to open the individual cells of a car battery. As a friend of classic lead wet batteries that you can still maintain and refill with deionized water or sulfuric acid, I was always looking for a reasonable tool to open the cells.
This tool is suitable for all common car wet batteries. The contact surface is as large as possible and the base of the cross is wider at the bottom to have a more stable connection. The star grip offers sufficient leverage even with tight locks.