Toyota 28800-0C010 Battery

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First of all, disconnect the negative terminal when working on batteries, as they produce flammable hydrogen gas and contain corrosive sulfuric acid. Inspect the battery for damage or corrosion. Clean clamps with a battery brush, use a baking soda solution for terminals and rinse thoroughly. Don't overtighten the hold-down clamp when reinstalling.

First of all, regular battery maintenance is vital for reliable starts. If there's corrosion, remove the battery for cleaning with a battery brush and a solution of warm water and baking soda. Check the battery tray and clamp bolts. Corroded parts should be primed and painted. Remove the battery for charging to avoid paint damage. Use a charger, remove cell caps, cover holes, detach the negative cable, and attach the charger. Look over the battery to prevent overheating. Check the charge with a hydrometer or voltmeter.

Disconnect the cable from the negative battery terminal.

During inspection, you should check the external condition of the battery, looking for any torn or damaged rubber protectors, corroded or loose connections, cracks in the case or cover, or loose hold-down clamps.

You need a digital voltmeter. With the engine and all accessories off, connect the negative probe of the voltmeter to the negative terminal of the battery and the positive probe to the positive terminal. The battery voltage should be 12.6 volts or more.

Installation is the reverse of removal.