Are they deep discharge, or the same as an automotive battery, just reduced in size? Do you know what the capacity is? To what depth of discharge (open circuit voltage will give some idea) do you take it? What kind of life do you get out of them. Need more field data for my data base. :-)
At our field we can park right next to the set up tables so the automotive batteries get all the field charging work. I seldom charge at the field as I take several fully charged packs and they pretty well cover all the flying I want to do. Close proximity (15 min.)to the field makes sessions shorter but more frequent.
BTW, anyone looking for a nice retirement home? Golf community, close to flying field, two car garage. $209,500.
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Red S.