I Have been running a Fullriver now for about 12 months and on one occasion I forgot to isolate the battery in storage it went dead flat about 6 months ago and now working perfectly does not seem to have done any damage to battery.
I also use van battery to move van up my drive and into storage position using an Aussie mover electric van mover and battery handles it well, can still get Fullriver from all purpose batteries 105a/h for $315
Hope this helps
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