The BS10A-H24/2.0L battery pack supplies UPS PC power supply units of the eNSP3-450P-xx series with energy. Based on NiMH technology, it provides a longer back-up time and is lighter than lead based battery packs. Very compact, it is intended to be installed into 5.25" drive slot. The connection between the battery pack and the UPS PC power supply unit is made through a connector equipped with a protection fuse. The battery pack is free of maintenance. Made in Japan. Matching NIPPON PSA available upon request * Please check out my other items