Watch our video on how to care for your battery.
There are several things that could cause a battery to appear as though it is no longer delivering the amperage it was designed for:
Corroded Terminals - will cause a poor connection between the post and cable and could result in poor charging from the vehicle alternator or simply no current delivered to the vehicle electrical system. This can be overcome by cleaning the post with a wire brush and neutralizing the corrosion with a mixture of baking soda and hot water.
Loose Connection - can be a result of not properly loosening the battery clamp when changing the battery, not properly tightening the battery clamp or over tightening and stretching the battery clamp. This can be overcome by properly tightening the battery clamp or replacing the cable.
Seasonal batteries often get put away for the off season in a discharged state, this will result in the battery testing very poor when it is needed for the next season or very low voltage and an inability for it to start the vehicle. Seasonal batteries should be charged prior to storage for the off season, and the main positive or negative cable disconnected so no parasite draws can discharge the battery, it is also a good idea to charge the battery during the off season or leave it on a maintenance charger when not in use.
Batteries that are allowed to sit discharged during the winter stand a good chance of freezing, this could result in the plates being damaged or the battery case splitting open and electrolyte leaking out. This can be prevented by charging batteries prior to putting them away for the winter and checking and charging them periodically during the off season for state of charge, vehicles with high parasitic draw should have the batteries disconnected or left continuously on a maintenance charger to avoid discharging.
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