Good info from everybody, thx.
Did a test run today and sadly, the AGMs are dragging the old fashioned lead acid batteries down.
Since I bought them used, without any warranty or history
, I can't complain.
Took a chance and kind of lost
The boat can still be used every day and the range right now is 1.5 hrs.
With fresh batteries, it should be 15 hrs, according to Duffy Boat anyways.
Cut that in half for a good 6-7 hrs at 4-5 knots.
If this was my sailboat and the house bank, I would not mess around with used stuff, always went first class and never had a problem and never had to call for help or a tow.
This little toy boat hovever is different, I'll run the batteries way down with safety
and comfort still being maintained, all the way down to 1/2 he range.
Or I will check with Costco tomorrow, a smoking hot deal on 8 Golf Cart Batteries could be the ticket. Or next week...