Replacement Roadster 12 Volt Battery

The Tesla Roadster 2.X versions, have an auxiliary battery buried under the front passenger fender, which powers the 12 volt devices in the car.

This battery needs to be replaced every year or two.  Our upgraded battery is 12 Amp Hour vs the motorcycle battery normally in Roadsters which is only 8 Amp Hour, and our battery is specifically designed for electronic applications since there is no “starter motor”.

This extra 4 Amp Hours of energy improves audio systems, making bass and percussion sounds more pronounced.

This kit includes a cable kit to convert to a rapid connect ‘Fast-On’ 1/4″ terminal.

As Low As: $44.95



A couple of battery options are available:

  • Absorbent Glass Mat (AGM) – 2 Year Warranty
  • Lithium Ion – 4 Year WarrantyBoth use Fast-On Tab connection

The original terminals used were for a motorcycle battery mount with eyelets.
The Gruber Power Services (GPS) replacement battery is an upgrade from 12 Volt 8 Amp Hour capacity to 12 Volt 12 Amp Hour capacity.
The GPS batteries use the preferred “Fast-On” quick disconnect style terminals popular in the Critical Power Industry.
A Eyelet to Fast-On conversion kit is provided with every battery purchased.


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