Roadster 2.x models, VIN 501 on up, use a small auxiliary battery—buried under the front passenger fender—to power all 12-volt electronics. A Tesla retrofit from the 1.5 series Roadsters which used two of eleven battery sheets to supply 12 Volts causing premature sheet failure. The solution was 12 Volt support from a battery. This battery should be replaced every couple of years.
Our upgraded unit increases capacity to 12 Ah (vs. the typical 8 Ah motorcycle battery) and is engineered specifically for electronic applications (no starter motor required).
| Parameter | Value |
|---|---|
| Nominal Voltage | 12 V DC |
| Capacity | 12 Ah (upgrade from 8 Ah) |
| Application | Auxiliary/12-V electronics (no starter motor) |
| Terminals | 1/4″ Fast-On (with included conversion cable kit) |
| Recommended Interval | Replace every couple of years (usage-dependent) |
| Install Location | Under front passenger fender (Roadster 2.x) |
What’s included| Model | Notes |
|---|---|
| Tesla Roadster 2.x (VIN 501 on up) | Direct upgrade for the factory auxiliary battery; improves capacity and audio headroom. |
