Mecer Leoch DJW12-18 12V 18Ah SLA Battery

Leoch DJW12-18 UPS Battery

The Mecer Leoch DJW12-18 sealed lead-acid battery supplies 12 volts at 18 amp-hours for UPS systems, backup power racks, and standby DC applications. Leoch manufactures this DJW series unit as a maintenance-free valve-regulated design that contains electrolyte within absorbed glass mat separators. The sealed construction prevents acid spillage during transport, installation, and normal operation inside enclosed battery cabinets.

At approximately 5.32 kg, this cell balances capacity against cabinet weight limits in standard 2U and tower UPS enclosures. The 18 Ah rating defines how long the battery can deliver a specified current before reaching end-of-discharge voltage under defined test conditions. UPS engineers pair multiple units in series or parallel configurations to meet required runtime and voltage targets for protected loads.

Sealed lead-acid chemistry remains the dominant choice for short-to-medium duration standby power because of predictable discharge curves, wide operating temperature tolerance, and established recycling infrastructure. The DJW12-18 form factor matches common UPS battery tray dimensions, simplifying replacement during preventive maintenance cycles without modifying cable harnesses or mounting hardware.

Procurement teams specify this battery when refreshing aging cells in Mecer UPS installations or building custom DC backup strings for telecom, access control, and security panels. Terminal type and polarity follow standard conventions documented on the battery label. Always verify charger float voltage settings match the manufacturer’s recommendation to maximize cycle life and avoid overcharge degradation.

Discharge performance depends on load current and ambient temperature. Higher draw rates reduce effective amp-hour capacity below the nominal 18 Ah figure published at the ten-hour rate. Size battery strings using measured load profiles from the protected equipment rather than nameplate ratings alone. Allow headroom for inverter efficiency losses and aging factor when calculating required runtime minutes.

Store spare batteries in a cool, dry location away from heat sources that accelerate self-discharge. Inspect terminals for corrosion during annual UPS service and clean contact surfaces before reconnection. Replace entire battery sets when capacity testing shows any cell below eighty percent of rated performance to prevent uneven string loading during outage events.

Key Features

• 12V 18Ah Capacity
  Delivers 12-volt output with 18 amp-hour energy storage for standby power applications.

• Sealed Lead-Acid Construction
  Maintenance-free VRLA design requires no electrolyte topping during service life.

• Leoch DJW Series Quality

  • Manufactured by Leoch, a recognized SLA battery producer
  • DJW12-18 model code identifies voltage, capacity, and series designation

• UPS Replacement Compatibility

  • Fits standard UPS battery compartments requiring 12V 18Ah cells
  • Suitable for tower and rack-mount uninterruptible power supplies

• Compact Weight Profile
  Approximately 5.32 kg per unit eases handling during single-person battery swap procedures.

Specifications

What’s in the Box

• Leoch DJW12-18 12V 18Ah sealed lead-acid battery

Why Choose DJW12-18 Battery

• 18 Ah capacity supports meaningful runtime for small server and networking UPS loads

• Sealed construction permits installation in any orientation within manufacturer limits

• Standard 12V form factor simplifies string configuration for higher voltage UPS banks

• Leoch manufacturing pedigree provides consistent quality across replacement cycles

• Lightweight 5.32 kg mass reduces strain during routine UPS battery maintenance