The Battery Butler Battery Storage/Maintenance Chargers are specifically designed for the maintenance of 12 Volt batteries that are stored or only used periodically.
These chargers will prevent the normal self-discharge of your battery, while extending the life of rechargeable 12 volt batteries by providing a minimum current, regulated
output. Other types of chargers provide a strong, rapid charge that tend to boil out liquids and decay electrodes.
With the Battery Butler charger, once your battery has been fully charged, it will automatically shut-off; then resume charging as your battery level drops.
Works on ALL wet cell, gel-cell or the new OPTIMA batteries. Works on ALL years, ALL make & model 12 volt car, truck or motorcycle batteries.
The Battery Butler Battery Storage Chargers are specifically designed for long term use. You can safely leave it connected to your battery for days, weeks, months, even years!