DanS HJ-45
SILVER Star
The Optima and Odyssey both use the term "gel cell," but they are AGM batteries.
FWIW, I bought one of the new fancy pants chargers because I've got an old Optima in the faux-lux (which is now starting to fail, it will be replaced with a diehard platinum), and we've got diehard platinums in two of Dad's trucks. The normal old charger worked, sort of. It wouldn't recover a battery if it gets anything other than a little depleted. If you really kill the battery, you will need to use the new style charger.
You can mount the Diehard Platinum on it's side without a problem.
Dan
FWIW, I bought one of the new fancy pants chargers because I've got an old Optima in the faux-lux (which is now starting to fail, it will be replaced with a diehard platinum), and we've got diehard platinums in two of Dad's trucks. The normal old charger worked, sort of. It wouldn't recover a battery if it gets anything other than a little depleted. If you really kill the battery, you will need to use the new style charger.
You can mount the Diehard Platinum on it's side without a problem.
Dan