5X lower self-discharge keeps battery cells active and ready for use, even after long periods of storage. Charging at any time will have no effect on the battery. Built-in shock absorbing features protect the battery. 16 firm holding contact terminals reduce the risk of power loss/fluctuation in high vibration work environments. For use with Makita 10.8V and 12V MAX tools. Use charger, Model No. DC10WB (SKU 356509). WARNING: Cancer and Reproductive Harmwww.P65Warnings.ca.gov -