HRD UPS---Global High-end Power Solutions Expert! Your best trustable OEM/ODM power partner! ISO9001-2008,ISO14001 , ISO18001, TLC, CQC, TUV ,CE certified.
Thre are usually 2 types battery for UPS battery , AGM and GEL . AGM batteries indicate Valve Regulated Lead Acid Batteries with the following features: Maintenance-free, no water adding required; ...