CSB Battery HR1221WF2 has been cross-referenced to be compatible and replace Universal (UPG) D5777 sealed lead acid Battery. This battery by CSB Battery is rated at 12V 5.1Ah 61 Whr.
CSB Battery HR1221WF2 is specifically designed for high efficient discharge application. Rated at 12V 5.1Ah (21 Watt per cell), its characteristics are small volume, light weight and high discharge efficiency. It can be used for more than 260 cycles at 100% discharge. and has a design life of three to five yeas in standby service. • Capacity: 5.1Ah
145 Compatible Model Numbers.
Specifications Chemistry Lead Acid Voltage 12 Capacity 5100 mAh / 5.10 Ah Rating 61 Whr Connector F2 Length 3.60 inch / 9.14 cm Width 2.80 inch / 7.11 cm Height 4 inch / 10.16 cm Color Gray Weight 4.4 lb / 2.00 Kg Warranty 1 Year
Total Weight: 4.4 lbs / 1,995.80 g