The PM 31/Odyssey 2150 require a very specific profile for proper charging, otherwise longevity is significantly jeopardized. Only certain onboard AGM chargers have it. They include DP (Delta Volt Series), MK (PC series), Powermania Turbo M series, Promariner (Pronautique series) and Xantrex. The Noco does not have the correct profile and is not on the approved list by Odyssey. Apparently one of the reasons Sears stopped carrying it is because there were too many warranty claims likely due to improper charging.