RefurbUPS SLA1119 12V 18A UPS Replacement Battery

Compatible UPS Replacement Kit

This kit supplies a single 12V 18A sealed lead-acid battery built to fit UPS units that specify the SLA1119 form factor. It is intended for administrators who need a drop-in cartridge to restore runtime on existing uninterruptible power supplies. The package includes installation instructions so the swap can be completed without specialised tools. Buyers whose UPS requires a different voltage, capacity or physical layout will not be served by this item.

Practical Limits of SLA Chemistry

The 12V 18A rating defines the energy the cell can deliver during a discharge event; runtime scales with the load attached to the UPS. Sealed lead-acid chemistry self-discharges over months, so stored spares should be recharged periodically to remain ready. The battery is rated for high-rate discharge but is not designed for deep-cycle service or continuous high-current draw beyond UPS specifications. Environments exceeding the manufacturer's temperature range will shorten usable life.

Build Quality and Daily Implications

Each unit ships factory fresh and weighs 15, reflecting the dense lead plates required for reliable backup power. The cartridge format aligns terminals and dimensions to the original SLA1119 chassis, allowing a straightforward slide-in replacement. Valve-regulated construction prevents electrolyte leakage when the UPS is mounted in its normal orientation. Routine inspection of terminal tightness and case integrity ensures consistent contact through repeated discharge cycles.