Pump I had to change my ATF today because of a leaky pan gasket. I bought this pump about a month ago thinking it would make changes much easier. It was on sale and much cheaper than a Mightyvac. It appeared pretty straight forward and ran off the battery. The pump ran flawlessly and I hardly spilled any ATF on the floor. I was very impressed until I tried turning my Jeep back on to check my fluid level.. The battery was dead. I was able to tow it out and jump it so no worries there and everything is good now. I called NT and they are allowing me to return it and are even sending me a shipping label. Great customer service and still one of my favorite online "DIY" stores. Their magazines make excellent reading material too. Anyways I doubt it could have been my battery because it is a little less than a year old. I just had my alternator tested as well. Very good pump otherwise and I'm sure it is ideal for passenger cars/ boats with dual batteries.