So I've had some issues with my battery and wanted to fill/empty my pro-x sacs to test them out on the dock first. I bought a piece which is a transformer pack that plugs into an outlet and has a wire out to what looks like a standard cigarette lighter female piece. I figured this would be a great way to fill or empty the four sacs at the dock to take pressure off the battery, but there seems to be an issue. When I plug in to this you can hear the tsunami whirring but very little if any flow. I plug in to the boat cig lighter and it pumps full stream. Any ideas why?
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