Toyota 28800-31291 Battery

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When using a booster battery to start a vehicle, it is important to take certain precautions. First, ensure that the ignition switch is in the Off position before connecting the booster battery. Turn off any lights, heater, and other electrical loads to prevent any potential damage. It is also recommended to wear safety goggles to protect your eyes. Make sure that the booster battery has the same voltage as the dead battery in the vehicle. It is crucial that the two vehicles do not touch each other during the process. If the booster battery is not maintenance-free, remove the vent caps and cover the vent holes with a cloth. Connect the red jumper cable to the positive terminals of each battery and the black jumper cable to the negative terminal of the booster battery. The other end of the black cable should be connected to a good ground on the vehicle to be started. This can be a bolt or bracket on the body. Start the engine using the booster battery and, once the engine is running at idle speed, disconnect the jumper cables in the reverse order of connection.

Turn on the high beams for ten seconds, then turn them off and let the vehicle stand for two minutes.

If the battery has removable cell caps, measure the specific gravity with a hydrometer. Sealed batteries may have built-in hydrometers or can be checked with a voltmeter.