[Danimal16]

The type of charger you use with Odyssey's in essential. The first one I had, over twenty years ago failed due to the charger, an old tech Schumacher. Since then I have used the Odyssey brand charger. The oldest battery I have now is over 12 years. The charger type must be matched to the type of battery. These chargers are designed for the Odyssey dry cell and will work on any AGM battery. I am not sure if there is another type charger that is appropriate for the dry cell.