The Makita BL18120 (1915J2-8) is a massive 12.0Ah high-capacity 18V LXT® Lithium-Ion battery engineered for maximum runtime in demanding professional job site applications. Delivering an extraordinary 216 Wh of energy capacity, this power pack allows tradespeople and contractors to operate high-draw power tools—such as angle grinders, circular saws, rotary hammers, and outdoor power equipment—for significantly longer durations with reduced downtime for swapping or recharging. Built with Makita Star Protection Computer Controls™, the battery actively communicates with tools and chargers in real time to prevent overloading, over-discharging, and thermal overheating. The BL18120 features an improved impact-resistant outer shell with a shock-absorbing inner liner, multi-contact slide terminals for continuous power delivery under high vibration, and an integrated 4-LED fuel gauge for instant charge level monitoring.

• Ultra-high 12.0Ah (216 Wh) cell capacity provides maximum continuous runtime for demanding, heavy-draw tools.
• Star Protection Computer Controls™ enable active monitoring to safeguard against overloading, over-discharging, and overheating.
• Integrated 4-LED fuel gauge offers clear, immediate visibility of the remaining battery charge level.
• Multi-contact slide terminals maintain stable electrical connection and consistent power flow even under heavy vibration.
• Heavy-duty housing with shock-absorbing internal liner provides superior impact resistance against job site drops.
• Advanced internal cooling airflow layout maintains optimal temperature during intense use and rapid charging.
• Full ecosystem compatibility across all Makita 18V LXT® cordless power tools and standard LXT chargers.