We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
ONeAc ONM300 UPS replacement battery kit with two 12V SLA cartridges

RefurbUPS

RefurbUPS ONeAc ONM300 12V UPS replacement battery kit

SKU CH-WJSR-542QB

Kit contains two 12 V high-rate SLA batteries for ONeAc ONM300 UPS units

  • Product typeKit/Package
  • Product weight6
  • 12 V 7 Ah battery powers your UPS reliably
  • Kit includes two sealed lead-acid cells for full replacement
  • Factory-fresh stock ensures maximum service life
  • Step-by-step instructions simplify the swap process
  • Compatible with OneAC ONM300 UPS models

What this kit replaces

The ONeAc ONM300 kit supplies a 12 V replacement battery cartridge for compatible UPS units. It is intended for administrators who need to restore backup runtime on existing power protection equipment.

The specification that matters

The package contains one 12 V 7 Ah sealed lead-acid battery built for high-rate discharge. Only UPS models designed for this exact voltage and capacity will accept the cartridge.

Behaviour under sustained load

The high-rate discharge chemistry delivers steady current during extended outages rather than only short bursts. Factory-fresh cells and included installation instructions help maintain reliable runtime over repeated discharge cycles.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 70% of the 3,915 comparable items (median $39.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOneAC
Product lineOneAC Batteries
Product typeKit/Package

Questions about this item

What does the 12 V rating mean once the battery is installed in my UPS?

It matches the nominal voltage the UPS expects, so the unit will recognise the cartridge and charge it correctly.

Which connector standard does the ONM300 kit use, and what does that limit?

The kit uses the standard UPS battery connector, limiting use to compatible OneAC or ONeAc models that accept this cartridge format.

What physical space or mounting points does the ONM300 cartridge need?

It fits the original battery compartment and uses the existing mounting tabs, so no extra brackets or modifications are required.

More in UPS Replacement Batteries

Similar items