This charger and battery set can be used with the P5R Core, P5R Work, MH3, MH4 and MH5. When used with MH3 and MH4, it doubles lumens maximum output to 400 lumens and adds rechargeable functionality, thereby saving costs and the environment at the same time. The charger can be used worldwide: battery charger powered by USB cable. The charge status LED shows when the battery is fully charged.