The HiKOKI BSL36A18X is a MultiVolt Li-ion battery pack designed to provide flexible power across a wide range of cordless tools. Its standout feature is the automatic voltage switching, which allows it to operate at either 36 V with a 2.5 Ah capacity or 18 V with a 5.0 Ah capacity depending on the tool you connect it to. This versatility means you can use a single battery for both high-power 36 V equipment and your standard 18 V tools, simplifying your workspace and reducing the number of batteries you need to manage. Built for demanding tasks, the pack delivers a power output of 1080 W and includes a dedicated cooling function to maintain performance during heavy-duty applications. The internal electronics intelligently protect the cells against overloading, overheating, and deep discharge, while a built-in indicator lets you keep track of the remaining charge. To withstand the rigors of a job site, it is housed in an improved durable casing, weighing approximately 0.74 to 0.79 kg and measuring 85 by 80 by 125 mm, making it a compact yet robust energy source for professionals.