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
Single 12V 9A battery cartridge in black plastic housing

RefurbUPS

RefurbUPS MK ES9-12T2 12V9A ups replacement battery

SKU CH-4949-1NP7S

A 12V9A factory-fresh replacement battery cartridge for UPS systems

  • Product typeBattery
  • Product weight7
  • Factory-fresh cells deliver reliable backup power
  • 12 V 9 Ah rating matches original UPS specifications
  • Single-battery cartridge installs without extra wiring
  • High-performance design supports immediate deployment

Compatible UPS Battery Replacement

The MK ES9-12T2 compatible cartridge delivers a 12 V 9 A sealed lead-acid cell built to match the original specifications of supported UPS units. It arrives factory fresh and ready for immediate installation in compatible power-protection systems.

Sustained Load Behaviour

Under continuous discharge the sealed construction maintains stable voltage output without gas release, allowing the UPS to support connected equipment until mains power returns or a controlled shutdown completes. The design is not suited for applications requiring deep-cycle endurance beyond standard UPS runtime demands.

How it compares

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

Price $18.99
Cheaper than about 75% 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
Product typeBattery

Questions about this item

How much heat does the 12V9A battery generate during continuous float charging?

The sealed lead-acid chemistry runs cool under normal float charge; ensure the UPS ventilation openings remain unobstructed so any warmth can dissipate.

What must I already own for this MK ES9-12T2 cartridge to work?

You need a compatible UPS that accepts a single 12V9A battery cartridge with the same physical dimensions and terminal layout.

More in UPS Replacement Batteries

Similar items