The Makita 12V max Lithium-Ion cordless L.E.D. flashlight (ML103) is a portable and ultra-compact light source. It is compatible with Makita 12V max Lithium-Ion slide-style 2.0 Ah and 4.0 Ah batteries (sold separately). The efficient L.E.D. light delivers long run time, with up to 28 hours per charge using the 4.0 Ah battery. The ML103 is 3-7/16 in. long and weighs only 0.6 lbs. (with 12V max 2.0 Ah battery, sold separately). The compact size makes it ideal for convenient illumination in tight spaces. For longer run time, all 12V max cordless tools are also compatible with the 12V max Lithium-Ion 4.0 Ah battery (BL1041B, sold separately). 12V max Lithium-Ion batteries are engineered with a battery protection circuit that protects against overloading, over-discharging and over-heating. It's part of the expanding 12V max series, combining performance with superior ergonomics in a compact size.