Hello! I am new to this. My brother is giving my 13 yo son a FeiLun FT012 boat for Christmas. It comes with 3S LiPo battery. I'm glad I did some reading and learned of the safety concerns with LiPo batteries. After doing the reading, we decided he will be getting an extra battery and some accessories from other family members - a safer charger, Lipo safe bags, and an ammo can. For the charger, we chose SkyRC iMAX BA6 V2. Hope that was a good choice. My question is about charging and storage of the batteries. We live in Wisconsin, so he won't be using this until spring. Should we charge and keep the batteries fully charged until spring? Or do nothing with them for now and wait to charge them in a few months when he is ready to use them? Or use the discharging functionality that this BA6 v2 charger says it has to discharge them for now, and then recharge them when he is ready to use them?

Thanks in advance for your helpful replies!
Jeff