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Rectangular 12V 7Ah lithium battery, grey plastic case, F2 terminals, 151x65x100mm

BatteryJack inc.

BatteryJack inc. 12V 7AH Lithium Replacement Battery for HAI 21A001 Omni LT System

SKU CH-3H3K-9QDVK

12 V 7 Ah lithium replacement for the HAI 21A001 Omni LT system, weighing 2.09 lbs with 3000-plus charge cycles

  • Battery pack size1-pack
  • Battery typeLithium
  • LiFePO4 chemistry delivers 3000-plus charge cycles for long service life
  • Weighs 2.09 lbs at 12.8 V nominal voltage for portable power
  • Compact 5.94 × 2.56 × 3.94 in footprint fits tight enclosures
  • 6 Wh capacity replaces SLA batteries in alarm and outdoor gear
  • F2 terminals allow series or parallel connection up to four units

Replacement Battery for HAI 21A001 Omni LT

The 12V 7AH lithium battery replaces the original power source in the HAI 21A001 Omni LT system. It uses Lithium Iron Phosphate chemistry rated at 12.8V nominal voltage and 7Ah capacity. The pack weighs 2.09 lbs and measures 5.94 in by 2.56 in by 3.94 in. F2 terminals provide the electrical connection.

Upgrade From Sealed Lead Acid

This unit replaces a 12V sealed lead acid battery with a lighter lithium alternative that delivers twice the usable capacity at 60 percent of the weight. The jump is worth it when longer runtime and reduced mass matter more than the higher upfront cost. It supports up to 3000 charge cycles at 1C 100% depth of discharge.

Capacity Headroom for Portable Loads

The 89.6Wh energy rating comfortably runs fish finders, flashers, robotics, solar lighting, e-scooters and home alarm systems. Four packs can be wired in parallel or in series to scale voltage or capacity. Extreme cold or continuous high-current draw beyond the 1C rating will reduce available runtime.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $30.99
Pricier than about 86% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery typeLithium
In the box
Battery pack size1-pack

Questions about this item

What are the exact dimensions and terminal type needed to fit the HAI 21A001 Omni LT System?

The battery measures 151 × 65 × 100 mm (5.94 × 2.56 × 3.94 in) and uses F2 terminals for direct connection.

How do I correctly install this battery in series or parallel, and what is the common wiring mistake?

You may connect up to 4 units in series or 4 in parallel; the common error is mixing series and parallel strings which unbalances the cells.

When will the LiFePO4 cells need replacement based on cycle life?

The pack is rated for 3000+ cycles at 1C 100% depth of discharge, far exceeding typical SLA lifespan.

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