One name, several chemistries
Deka marine product is not one battery. East Penn sells flooded, AGM, and gel under the same family. The case color and the word on the label decide the charger, not the logo. Putting a gel battery on an AGM or flooded program, or the reverse, is a documented way to dry out or undercharge the new pack.
House banks on cruisers and sailboats
Gel and AGM Deka lines show up as house batteries on boats that live on a lift or in a slip. The starting battery in the engine room may still be flooded. We read every label in the box, then the charger’s chemistry switch or DIP settings, before we talk about a replacement.
Reading the case
The label on a Deka pack tells you flooded, AGM, or gel. We match that word to the charger program already on the boat. House banks on a lift-kept cruiser are often sealed; the engine-room starter may still be flooded. Mixing those programs is how a new pack dies in a season.
Lines we are asked about
Model names below are public line names used to identify batteries already on boats.
- Flooded marine — Traditional vented marine starting and deep-cycle.
- AGM marine — Sealed AGM marine for vibration and different mounting.
- Gel marine — Gel marine that requires a gel charger profile.
We replace marine batteries at the boat. See services and what changes a quote.