RV owners often overlook proper off-season storage of batteries. When your vehicle is left in storage, it is important that the batteries aren’t drained past a certain point. If they are lead-acid batteries (including AGM), it is also important to give them a frequent full charge at certain intervals. Lead-acid batteries will discharge over time and must be maintained, even if they are not being used. The rate of self-discharge depends on the batteries’ design and the temperature. Flooded batteries have higher self-discharge rates than AGM batteries. Higher temperatures increase self-discharge, which is why batteries should be stored in a cool place. Lithium batteries have virtually no self-discharge.