Maintenance Requirements

There are generally three types of batteries: conventional vented cell, low maintenance, and maintenance-free.

• Vented cell batteries are obsolescent. These batteries have removable vent caps over each battery cell. The cells lose water through evaporation during charging and must be constantly monitored. Distilled water is frequently added, otherwise the battery fails.
• Low-maintenance batteries have gang vent covers, usually two. Since gases are not allowed to escape, they condense into water inside the battery.
• Maintenance-free batteries use plate materials that require low water usage. They are completely sealed and require no inspection or addition of water. These batteries are the most preferable type.

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