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Single 12V 18A sealed lead-acid battery block in black plastic case

RefurbUPS

RefurbUPS MK ES17-12 12V18A UPS Replacement Battery

SKU CH-1VNT-ES2K4

A 12V 18A sealed lead-acid battery kit for UPS replacement, supplied new with installation instructions

  • TypeKit/Package
  • Weight15
  • Delivers 12 V 18 A for reliable UPS backup
  • High-rate discharge SLA chemistry sustains heavy loads
  • Factory-fresh cells ensure immediate readiness
  • Includes step-by-step installation instructions for easy swap
  • Weighs 15 units for straightforward handling

Ready replacement battery

This 12V 18A sealed lead-acid battery serves as a direct replacement cartridge for compatible UPS units. It ships factory fresh and includes comprehensive installation instructions so technicians can restore backup power quickly. The kit contains a single high-rate discharge cell built for reliability in server and network environments.

Steady discharge under load

The high-rate discharge design delivers consistent current during extended outages rather than only brief bursts. This behaviour supports critical equipment through longer power events without voltage sag that could trigger unexpected shutdowns. Factory freshness ensures the cell starts at full capacity for predictable runtime.

SLA chemistry constraints

Sealed lead-acid chemistry limits energy density compared to newer chemistries, so the unit weighs 15 units and occupies more space per watt-hour. Self-discharge during storage means periodic recharging is required to maintain readiness. The 12V 18A rating defines the practical voltage and current envelope for compatible UPS systems.

Highlights

  • Delivers 12 V 18 A for reliable UPS backup
  • High-rate discharge SLA chemistry sustains heavy loads
  • Factory-fresh cells ensure immediate readiness
  • Includes step-by-step installation instructions for easy swap
  • Weighs 15 units for straightforward handling

Specifications

SeriesOther Manufacturers
TypeKit/Package
Weight15

Questions about this item

How much heat does the 12V 18A SLA battery generate during continuous UPS operation?

Sealed lead-acid batteries of this rating produce minimal heat under normal float charge; noticeable warmth only appears during heavy discharge or recharge cycles.

Which connectors or cables must I already have to install this MK ES17-12 compatible cartridge?

The kit supplies the battery only; you must reuse the existing UPS wiring harness and terminal connectors from your current unit.

Will this 12V 18A replacement work in an older UPS that originally used a lower-capacity 12V 17A battery?

Yes, the 18A unit fits the same form factor and voltage, providing longer runtime; the UPS charging circuit manages the capacity difference automatically.

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