According to the guys at Duralite, Li-Ion batteries do not need to be cycled but they need to think they are being used. To accomplish this their recommendation is to fully charge and then discharge the packs down to 7.5 volts every 4-6 weeks when they are not in use. They recommend that the batteries are always left in a discharged state when not in use. In other words don't charge them and let them sit unused for several weeks. If you don't plan to use them then discharge them to 7.5 volts...Gary