Maintenance Free Batteries?????

No as we all know ... as time is going on, the battery industry is coming out with maintenance free batteries. I ...above all...have had no luck with these batteries. The manufacture said I am not maintaining them properly and that I should get 10 years out of them. I have been getting about 3 years out of them And since a good portion of us want an OEM looking battery, we go after the high $$$$ battery to maintain the look. The battery sales place mentioned that I should be using a "Odyssey battery charger". SO before some one chews may *** off for not asking a qusetion.....

THE question is what do you know about the Odyssey Charger?