Scion 28800-64132 Battery

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Once the engine is running at idle speed, disconnect the jumper cables in the reverse order of connection.

Start by removing the fasteners that secure it and set the cover aside.

Charge the battery before proceeding.

The average charging time for a trickle charger is 12 to 16 hours. Remove cell caps (if present), cover the holes, and connect the charger cables to the battery posts. Monitor the battery regularly during charging to prevent overheating.

To ensure reliable and quick starts, a routine preventive maintenance program for your vehicle's battery is crucial, but it's essential to have the necessary safety equipment, including a face shield or safety goggles, baking soda, petroleum jelly, battery post and cable cleaner, treated felt washers, puller, and rubber gloves, when working around the battery. Safety precautions must be observed during battery maintenance, such as turning off the engine and all accessories, disconnecting the negative terminal cable, and avoiding sparks, smoking, or open flames near the battery due to the flammable and explosive nature of hydrogen gas produced by the battery. Moreover, handle the corrosive sulfuric acid in the battery's electrolyte with care, wearing protective safety glasses, and ensuring it doesn't contact your skin, eyes, or clothing. Children should be kept away from the battery. Inspect the battery for external damage, including corroded or loose connections, damaged rubber protectors on the terminals, cracks in the case, loose hold-down clamps, and cable issues. Corroded terminals require battery removal for cleaning, which involves loosening cable clamps with a wrench, removing the ground cable first, cleaning the clamps, terminals, and battery top with a warm water and baking soda solution (while wearing safety goggles and gloves), and using a terminal cleaner for extensively corroded terminals. Ensure the battery tray is in good condition, hold-down clamp bolts are tight, and no parts are left in the tray when reinstalling the battery. Any metal parts damaged by corrosion should be covered with a zinc-based primer and painted. Charging the battery is best done with it removed from the vehicle to prevent paint damage from escaping gas. Slow-rate charging using a one or two-amp trickle charger is recommended, as it's safe and less strenuous on the battery. Higher amperage chargers can be used but should not exceed 1/10th of the battery's amp/hour rating. Rapid boost charges should be reserved for emergencies. A trickle charger typically takes 12 to 16 hours to charge a battery. During charging, ensure cell caps (if present) are covered with a cloth to prevent electrolyte spattering, disconnect the negative cable, connect the charger cables (positive to positive, negative to negative), and set the charger to 12 volts if applicable. For higher-amperage chargers, monitor the battery for overheating. If the battery has removable cell caps, measure specific gravity with a hydrometer every hour during the last few hours of charging, considering it fully charged when specific gravity readings remain stable for two hours and electrolyte bubbles freely. Sealed batteries may have built-in hydrometers or require a voltmeter reading of 12.6 volts or higher post-surface charge removal to indicate a full charge.

It is important to disconnect the cable from the negative battery terminal first and hook it up last to avoid shorting the battery.