Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Checking Battery Electrolyte Level

The following procedure can be used to check the electrolyte level in a low-maintenance lead-acid battery.

Battery Cell Cap Removal/installation - Low-maintenance Battery Only:




1. Unscrew and remove the battery cell caps with a flat-bladed screw driver.

WARNING: NEVER PUT YOUR FACE NEAR A GASSING, HOT OR SWELLED BATTERY. SERIOUS PERSONAL INJURY MAY RESULT.

Hook Inside Battery Cells - Low Maintenance Battery Only:




2. Wearing safety glasses, look through the battery cell cap holes to determine the level of the electrolyte in the battery. The electrolyte should be above the hooks inside the battery cells.
3. Add only distilled water until the electrolyte is above the hooks inside the battery cells.