Re: [Electric Boats] Battery charger limits and the Honda 2000 generator

Dave Hackett wrote:
>
> If I have a quad battery charger (eg Pro Charge) rated at 15 amps per
> battery (x4 = 48v), the full draw on the generator would only be (4 *
> 15A * 12V) = 720 watts. I just can't imagine getting even 2 knots at
> this power level. Am I missing something or do the chargers produce
> more then 15A when the draw out the other end is greater then 15A?
>
My DeltaQ charge runs continuesly at 20A, it runs at 30A for a about 5
minutes at the start and then drops back to 20A. I've a 36v system so
20x36 gives me 720W, which gets me over 3/4 speed with my boat.
Remember the power required to move a boat isn't linear, a little power
goes a long way initially, as you approach hull speed the power required
climbs rapidly.

> Would this potentially burn out the battery charger?
>
>
I was assured my charger could cope with being treated as if it was a
power supply. Not all chargers may be so forgiving of the situation,
especially those chargers that individually charge each batteries, mine
charges the string.

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