When a Toyota RAV4 struggles to start or shows electrical gremlins, the 12-volt battery is usually to blame. Most gas RAV4s use a Group 35 battery, while hybrids use a smaller auxiliary battery. Here is the group size, cost, and replacement steps.
| Model / Years | Group size | Typical CCA | Part cost |
|---|---|---|---|
| RAV4 gas 2013-2025 | Group 35 | 550-650 CCA | $150-$250 |
| RAV4 gas 2006-2012 | Group 35 | 550-640 CCA | $150-$240 |
| RAV4 Hybrid 12V aux | Group 35 or AGM | 410-540 CCA | $180-$280 |
The gas Toyota RAV4 uses a Group 35 battery, the same widely stocked Japanese-fit size found in the Camry. RAV4 Hybrid and Prime models use a smaller 12-volt auxiliary battery, often a Group 35 variant or a compact AGM, in addition to the high-voltage traction pack.
Choose about 550 to 650 cold cranking amps for dependable starts, especially in cold weather.
A Group 35 battery typically costs about 150 to 250 dollars for the part. Installed at a shop or dealer, budget roughly 200 to 350 dollars. Hybrid AGM auxiliary batteries can run a bit higher.
With the vehicle off, disconnect the negative terminal first, then the positive. Remove the hold-down bracket, lift out the old battery, and set the new one in the same orientation.
Connect positive first, then negative, secure the hold-down, and reset the clock. On hybrids, the 12-volt battery may be located in a less obvious spot, so consult the manual.
Watch for slow cranking, dim lights, a clicking sound at start, and warning lights on the dash. Hybrid RAV4s may show a system warning if the small 12-volt battery weakens even though the main pack is fine.
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