RefurbUPS 58700021 UPS Replacement Battery Kit

Compatible 12 V 7 Ah replacement kit

This kit supplies a single 12 V 7 Ah sealed lead-acid battery built to fit the Eaton Powerware 58700021 UPS cartridge. It arrives factory fresh and includes step-by-step installation instructions so technicians can swap the cell without specialised tools. The package targets IT staff maintaining legacy rack or tower UPS units that require this exact form factor.

Steady discharge under load

The high-rate discharge chemistry delivers consistent current during extended mains failures rather than only brief spikes. Internal resistance stays stable across the discharge curve, so the UPS runtime estimate remains accurate throughout the event. This behaviour suits environments where outages last several minutes and the load does not fluctuate wildly.

Low heat and silent operation

Sealed construction eliminates electrolyte venting, so the battery adds no audible noise or measurable heat to the UPS enclosure during normal float charging. Power draw in standby is limited to the UPS own trickle-charge circuit, keeping overall efficiency unchanged. The maintenance-free design requires no periodic topping up or ventilation upgrades.