Periods of inactivity can be extremely harmful to lead acid batteries. When placing a battery into storage, follow the manufacturer’s recommendations and/or the recommendations below to insure that the battery remains healthy and ready for use. The most important things to avoid:
1. Freezing. Avoid locations where freezing temperature is expected. Keeping battery at a high state of charge will also prevent freezing. Freezing results in irreparable damage to battery’s plates and container.
NOTE that if a battery is kept completely charged the chances of it freezing are very small.
2. Heat. Avoid direct exposure to heat sources, such as radiators or space heaters. Temperatures above 80˚F / 26˚C accelerate the battery’s self-discharge characteristics.
NOTE that heat causes more damage to a battery than cold ever will, so keep your battery storage area as cool as possible without going to extremes.
3. NOTE that storing your battery on concrete will not damage your battery!
Step by step storage procedure
1. Completely charge the battery before storing.
2. Store the battery in a cool, dry location, protected from the elements.
3. During storage, monitor the specific gravity (flooded) or voltage. Batteries in storage should be given a boost charge when they show a charge of less than 75%. See “Open Circuit Voltage” table above.
4. Completely charge the battery before re-activating.
5. For optimum performance, equalize the batteries (flooded) before putting them back into service. Refer to the Equalizing section for this procedure. WARNING – DO NOT EQUALIZE CHARGE GEL OR AGM BATTERIES!