Can anyone kindly answer a question? I would like to store two car batteries over the winter in my dry cool basement. I have an AGM 12 volt battery and another lead acid 12 volt battery to store over the winter. I have been given different advice and it is confusing. Some tell me to fully charge the battery prior to storage and check the battery every 3 months and recharge the battery if required. Some tell me to put on a battery maintainer with a trickle charge at all times. Some tell me to put a timer on the battery charger to charge the battery for an hour everyday. I would really like to know what I should do to have the battery last as long as possible. Thank you in advance and kind regards, Steve