Kia UT01018520A Battery-OPTIMA

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To check the battery, start by disconnecting the negative and positive battery cables. Then, check the battery's state of charge by performing an open voltage circuit test using a digital voltmeter. Touch the black probe to the negative terminal and the red probe to the positive terminal to get a reading between 12.6 and 12.9 volts. Remove the battery's surface charge by turning on the high beams for ten seconds and letting the vehicle stand for two minutes. With the engine and accessories off, use the voltmeter to measure the battery voltage, which should be around 12.6 to 12.9 volts. If the voltage is lower, charge the battery before proceeding. Next, perform a battery load test using a load tester. Connect the tester to the terminals and follow the manufacturer's instructions to load test the battery. Ensure the voltage does not drop below 9.6 volts. If the battery is weak or defective, the tester will indicate this. To replace the battery, disconnect the negative and positive cables, remove the battery hold-down clamp, and lift out the battery. Check the battery tray for corrosion and wash it in clean water if necessary. Replace the tray if it is cracked or damaged. When installing a new battery, make sure it matches the dimensions and ratings of the old one.