K-Series Swap ATX20-RS Battery Mount

Prelude Engineering LLC

$148.00
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Availability:
8-10 weeks after pre-order production start date

Production starts after 5 pre-orders, or this date: Apr 15th 2025

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Fits: 88-91 Prelude (Left-hand drive only)

 

This is a mount for a specific battery:
Antigravity Batteries ATX20-RS Lithium-Ion battery

Antigravity Batteries ATX-20RS
(Battery not included with this mount!)

Switching to the ATX20 and this mount is saves roughly 34lbs compared to the OE battery and tray.


This mount comes with a heat shield to protect the battery from the K-series header heat. The battery is mounted below the location of the OE "vacuum box". The top tie-down has an access hole that allows you to push the RE-START button on the battery.

This mount may require relocating some OE items, see the install instructions below for details.

Options:

  • Battery Cables: These are new positive and negative battery cables made just for this mount/battery. Saves you the trouble of having to make your own.
    The wire is pure copper, fully annealed, with EPDM insulation. The outer sleeve is flame retardant, cut/abrasion resistant, and chemical resistant.

Please see the install instructions below for more details about these options.

 

Install Instructions: Prelude_Engineering_LLC_ATX20-RS_Battery_Mount_Instructions.pdf