2017–2020 Hyundai Elantra
Save $135 by doing it yourself! Shop cost: $300
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| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Replacement Battery | H6-AGM | $150.00 | |
| Battery Terminal Cleaner | BC-100 | $10.00 | |
| Battery Terminal Protector | BTP-200 | $5.00 |
About prices: shown prices are estimates from typical Amazon listings and change frequently, and cheaper alternatives may be available. Confirm the current price on Amazon before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Park on level ground, set the parking brake, and open the hood (or access panel). Note radio presets and any power-window/sunroof settings that may reset. On EVs/hybrids the 12V battery may be in the cargo area, under a rear seat, or under a cover — not always under the hood. Wear gloves and eye protection.
Loosen the negative (−) terminal clamp and remove it first, then disconnect the positive (+). Keep the negative cable clear of the terminal so it cannot spring back into contact.
Remove the battery hold-down clamp, J-bolt, or tray fastener. Note the group size stamped on the old battery and the terminal orientation before lifting.
Lift the battery straight up and out. Batteries are heavy — use a battery lifting strap if available. Keep it upright to avoid acid spills.
Clean corrosion from the tray and cable ends with a wire brush and battery terminal cleaner. Dry the tray and check the tray drain is clear.
Set the new battery in the tray matching group size and terminal orientation. Install and tighten the hold-down snugly — do not crush the case.
Connect the positive (+) cable first, then the negative (−). Ensure clamps are tight and protected with covers. Do not overtighten soft lead posts.
Start the vehicle and confirm charging/12V system status is normal. Reset the clock/radio. Some vehicles need a window/sunroof or battery registration reset after replacement.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
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