The Odyssey PC2150 (SearsPM 1) is an excellent battery, but only certain chargers can charge them properly. Because Sears no longer carries them , you would have to get one from an Odyssey dealer. The Northstar 31 AGM is another excellent battery, and specs are a little batter than the Odyssey. The Northstar is available at Batteries Plus and has a four year warranty. I have mentioned before that if I ever went AGM, the Northstar would be in my boat.