The Makita 197988-4 18V 4.0Ah Cordless Li-Ion Battery & Charger Combo offers efficient power solutions for your cordless tools. Featuring a forced air cooling system, it ensures industry-leading charge times, while the Active 3 technology optimises charging by controlling current, thermals, and voltage. The digital power display indicates battery status, and a customizable audio tone alert notifies you when the battery reaches full charge. With one 4.0Ah 18V lithium-ion battery included, equipped with a fuel gauge for monitoring runtime, this combo delivers reliable and long-lasting performance for your projects.