Makita is the leading manufacturer of professional power tools on the market. The BL1041B 12V Max 4.0 Ah battery has a high battery capacity, designed to protect the battery from damages due to over d more→ischarge, high temperature and overload circuit. Individual cell monitoring and low temperature performance. Anytime charge, no memory effect and no discharging required.Features & Benefits• 4 stage LED battery fuel gauge • High battery capacity • Individual cell monitoring • Battery protection circuit • Low temperature performance