Generally any "non open" lead acid battery, you can pop the caps off . . . always, always, make sure the electrolyte level is to bottom of the top hole. I have always done this and used distilled water for top up . . . AND . . . keep the battery charged (maintainer/tender) . . . or charge it manually and remove the charger . . . I have original OE batteries in my 02 cummins, in my 04 Xfire, and my 06 Magnum . . . all check out great ! . . . it is the heat and lack of electrolyte that will kill a battery, along with the low charge state . . .