you need to charge them on storage charge with your charger, and even then, they should be cycled every month or so, at least thats how i do it. Someone may do it different......
Ok, there are going to be there for a month at most I only have two LiPo's too. So there is not going to be 10 different batteries. Also what is storage charge?
If it doesn't have storage setting, you can either discharge on charger till about 3.85V per cell, Or run down on car till you think low level is reached, then charge up to 3.85V.
Then store the lipos in the lipo sack in a cool dry place.
Your owner's manual should have a section about storage charging. I know they don't have an actual setting, but they do tell you how to do it (my 235 does).
My Friend has a lot of lipo batteries & I think thay need to be storage charged like one a week. but other than that not really sure. I am a NITRO Guy myself