Battery and cold storage of car for several months

A good battery will hold a charge through the winter if disconected from the vehicle adn left fully charged.
you may want to look into a battery monitoring charger, it is a trickle charger that is designed for long term use, it monitors battery volts and turns on when needed.

also put carpet squares or cardboard under the tires if you are parking on concreet. this will help prevent dry rot and flat spots

• Chornic solar charger is designed to the highest technical specifications and standards ,It will supply years of maintenance free use.
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Get a SMART charger!!! One that will allow a "float" voltage. Smart technology is one that monitors the battery and gives it what it needs.

This is not a big probleme at all if you going to park you vehicle for along period of time, you can leave you batterie instal in the car. this wil damage nothing and if you wil be home during that time you can start the engine evry 15 days for 5 minutes or moore to maintain the batterie cells. but to unplug or remouve the batterie from the car can be a good precaution if you not to be at home for a long period of time ....did you tried the solar slow charger batt ....verry cheap and safe nicolas