Years ago I purchased a Coleman air pump to inflate our air mattresses. It is the kind that runs on battery power only. You plug it into the wall to charge it, but it doesn’t run off wall power. If the battery is dead, it won’t work, even if it’s plugged in.
Last time we tried to use it, the power was reduced from gale force all the way down to three-pack-a-day emphysema. When I turn it on, it used to make a mighty noise, and now it just sits there and whines.
I noticed that it has a lead acid battery, and I watched a Youtube video where a guy filled his lead acid battery with water, and he was able to recharge it. I figured I’d give it a shot, so I disassembled the pump and removed the battery. The battery didn’t take much water, but that’s neither here nor there. My father-in-law brought us a new model of the same pump, so the immediate problem is solved (how do we fill up our air mattresses at camp without giving ourselves an aneurysm?).
But I’m sitting here staring at the insides of this pump and I’m starting to wonder, what would it take to convert this thing to run off AC power? I think it’s a DC motor in there, but I’m not an electrician. Anybody know what it would take to make this conversion so I don’t have to use a battery? Is this even possible? Here are pictures showing what the inside of this thing looks like after I removed the battery: