Due to its unique high purity lead grid construction the OPTIMA battery has a self discharge rate much lower than conventional flat plate batteries. This means the OPTIMA can be stored for longer periods of inactivity whilst retaining enough charge to start your vehicle. Depending on storage temperature, the OPTIMA can usually stand for 8 to 12 months and start most vehicles.
When possible, store your battery in a cool, dry location. Check the battery voltage every 6 months and charge if it falls below 12.6 volts.

Remember, newer vehicles with on-board electronics such as computers, alarms, etc, require battery power to retain system memory while the vehicle is parked. If the vehicle is to be stored for long periods you should use a maintenance charger to compensate for this drain. This charger should be voltage regulated between 13.2 - 13.8 volts, 1 amp maximum. On older vehicles, without electronics, disconnect the battery cables when the vehicle is not being used for extended periods.