Keep your Hitachi tools powered so you can get the job done with this rapid battery charger. Extend battery life with the cooling feature that cools your battery before and during charging, preventing overheating. The three-way overcharge protection system will avoid overcharging and the two colour indicator light will let you know what level of charge your battery has. This charger is compatible with 14.4V and 18V slide style Lithium Ion batteries for a rapid charge. This charger even includes a handy USB port and is suitable for charging the Hitachi Li-Ion 18V slide batteries; BSL1815, BSL1825, BSL1830, BSL1840, BSL1850 and BSL1860.