Makita BL4025 40Vmax 2.5Ah Li-ion XGT Battery The Makita BL4025 is the new 2.5Ah 40Vmax battery. These batteries have a new cell introduced and have digital communication between the battery and the charger and also between the battery and the tool. This increases the extraction rate compared to the older LXT batteries. These batteries have been designed for products used in continuous operations.  Features: Waterproof triple layer structure prevents cell failure due to water and dust Terminal short circuit structure Heavy-duty outer casing and cell holder with shock absorption structure High rigidity slide-i battery rails hold the battery firmly to the tool Digital communication between the battery and the charger Digital communication between the battery and the tool  Extraction rate of XGT batteries is higher than that of LXT Able to record more detailed information on battery usage Battery fuel gauge: 4LED gauge with a check button Cooling system for maximum battery life Developed for products used in continuous operations Specification: Voltage: 40v Battery Ah: 2.5Ah Battery Type: Li-ion XGT Battery ID: BL4025 Charging time: 28 minutes