27.8 VDC at 10 deg C, 27.3 VDC at 20 deg C, 26.8 VDC at 30 deg C, 26.6 V at 40 deg C, 26.3 VDC 50 deg C recommended end-of-charge voltage|Battery fuse 20 A/32 VAC (solid state circuitry blade type fuse + support) short circuit protection|IP00 degree of protection|-15 to 50 deg C during operation|-20 to 50 deg C during storage/transport|3% relative temporary capacity loss at 20 deg C in a month typical|Spring loaded terminals connection technology|Snaps onto DIN rail EN 60715 35x7.5/15 or keyhole mounting for hooking in to M4 screws installation|12-cells