BatteryJack inc. PS-12550 12 Volt 55 Amp Hour UPS Replacement Battery

12 Volt 55 Amp Hour UPS Battery

The BatteryJack PS-12550 is a sealed lead-acid unit built as a direct OEM replacement for uninterruptible power supplies. It uses absorptive glass mat technology to deliver 55 amp hours at 12 volts without electrolyte maintenance. The non-spillable design meets air-transport requirements and operates safely in any orientation. It suits administrators who need a drop-in battery for existing UPS hardware.

Thermals noise and power draw

Sealed AGM construction eliminates liquid electrolyte, so the battery runs silently and produces no fumes during normal float service. Gas recombination handles over 90 percent of generated gas internally, keeping the case sealed and the surrounding equipment clean. No watering or specific-gravity checks are required across the expected 4-7 year service life. The maintenance-free format reduces operational overhead for rack-mounted or cabinet installations.

Sustained load behaviour

Under continuous discharge the AGM separators maintain steady voltage delivery while the recombination cycle manages internal pressure without venting. The 100 percent OEM-compatible form factor ensures consistent fit and electrical contact throughout extended runtime events. A three-year warranty covers UPS and backup deployments, while other applications carry a two-year term. Buyers needing higher capacity or alternative chemistries should consider other models.