Liquid Level Line Check
Liquid level (electrolyte) must be between the top and bottom lines.
When checking the fluid level, check all six cells, not just one or two.
If the level is below the bottom line, add distilled water.
Checking with a hydrometer
Check the condition of the battery by the color of the hydrometer.
Hydrometer color | State | |
Type A | Type B | |
Green | Blue | Good |
Dark | White | Recharging required. Check battery |
Clear or slightly yellow | Red | Add distilled water |
Adding distilled water
Remove vent plugs.
Add distilled water to cells that need liquid. If the battery side is covered, check the fluid level by looking straight down into the cell.
Retighten the vent plugs securely.