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Originally Posted by patrick_g
So what about the 9 AH battery in the B&D jump pack rated for 300 amps? To make the math simple lets say it has 10 amp hours. Then you can get 1/2 of an amp for 20 hours. It will not give you 10 amps for an hour. It will not even give you an amp for 10 hours. If you put a 10 amp load on it (subject pump) then it will be asked to provide 20 times as much current as the amp hour rating. It will NOT give you 10 amps for more than a few minutes before it discharges sufficiently to lose pumping power. Current supplied will drop well below 10 amps rather quickly.
1*I would not suggest this as a method of pumping very many gallons of fuel at a time.
2*I stick with the battery charger suggestion.
******Pat*********
Pat
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I just got back from looking at battery packs and Battery Chargers at wall mart and auto zone.
1*What turned me off about battery packs is they are manual recharging not automatic recharging. I don't want something that I have to baby sit with and keep watch over in order to keep it charged up.
The most I'd ever be pumping at 1 time would be 30 gallons and that would be seldom if ever.
The pump is rated at 5.5 gallons per minute so that translates to about 5.45 minutes to empty a 30 gallon drum.
For just filling the tractor it would never be more than a maximum of 4 gallons or about a 45 second run time of the pump.
2*As for a battery Charger I have no idea of what I need as to out put volts and number of amps.
I'm trying to stay under 30 or 40 bucks here!