Mighty Max Battery12V 22AH Gel Replaces Xantrex XPower Powerpack 400 Plus Jump Starter

Thank you. It fit, I have been getting batteries that looks like the picture, but the connectors is on the inside not the outside.

Battery seems to hold a pretty good charge in it and fits into to the Xantrex PowerPack 400... with some work. This battery has internal threads versus the raised side post style that usually comes with the Power Pack 400. It took some work but I got it to work by doing the following. Save the longer nut and bolts from removing the last battery, you will need them. Pop off the plastic wire holders that keep the positive and negative leads from moving too much. They are small U shape plastic pieces and pop right off. You will then need to bend the copper leads on the terminal cables to pretty much a 90 degree angle. Thread the nut onto the longer bolt from the last battery, the one that comes with it is not long enough. Move the nut all the way to the top of the bolt as far up as it will go. Contort the wires so they fold down to the battery terminal. Thread in the longer bolt as far as it will go through both battery leads for each terminal. Screw down the nut to force the connector leads as far down as you can onto the battery terminal. Plan on using a wrench. Make sure you have a snug fit but don’t overly tighten and break the battery. Start charging to verify you have a good connection, powerpack should be blinking while charging and stop blinking when done. Good luck. Would have rated he battery itself higher but took some figuring out to make it work so not exactly plug and play like I thought it would be.