During the winter or other downtime, the batteries should be removed from the trailer and stored in a cool, dry place, where there is no danger of freezing. They should be kept full of water, cleaned, and charged monthly. A battery that is allowed to completely lose its charge will never regain its original power or a full charge.
The following recommendations may be helpful if the battery is to be stored:
• When storing the battery in a vehicle or vessel, it is not necessary to leave it on charge. Disconnect the negative battery cable. This will prevent inadvertent discharging of the battery which may lead to a complete discharge.
• Fully charge the battery before putting it in storage and store in a cool place.
• Charge the battery every 30 to 60 days to ensure maximum battery life.
NOTE - A battery will self-discharge 1-3% per month at 80 degrees.