Indicators - Diagnostics with indicators communicate battery health. Easy to install or remove - first install the adapter and tighten, put the battery into the adapter. Then steps to remove the battery for charging or replacement, release it from the adapter, and charge or replace the battery. This adapter enables for lithium batteries to be used on for V10 tools, and lets you enjoy the advantages of extended operating time of lithium-ion batteries on existing for tools. Made of high quality ABS plastic, solid design, with Safety Circuit Protection, built-in smart control system. and safe, convenient to carry and easy to use. High-quality components: The internal circuit board is assembled with high-quality components to efficient and stable power output.. It provides over-voltage, over-current, overheats and short circuit protection. Fitment:for 18V Li-Ion Battery Multiple Protection & Safety System, Easy to Install & Remove. The products are only used for flexible conversion