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Replacing Battery

Batteries are rated by ampere hours (Ah), the number of hours they can sustain a specific current drain before complete discharge, or by cold cranking amps (CCA), the number of amps they produce to crank the engine in cold weather conditions. They may be rated according to European (DIN) standards, by Society of Automotive Engineers (SAE) standards, or both. Table i lists approximate rating equivalents. Replacement batteries should always be rated equal or higher than the original battery.

Table i. DIN and SAE Battery Rating Equivalents

The battery is held in place by a single hold-down bolt and plate. A secure battery hold-down is important in order to prevent vibrations and road shock from damaging the plates. Always disconnect the negative (-) terminal first, and connect it last. While changing batteries, clean away any corrosion in or around the battery tray using a baking soda and water solution.

Conventional batteries with vented caps which are supplied as original equipment are installed with a battery cover to protect surrounding components from battery electrolyte vapor which is corrosive. Replacement batteries with vented caps should always be installed with this cover. Sealed low-maintenance batteries do not require a cover.

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