Sealed AGM Batteries
AGM batteries (absorbed glass mat batteries) use sealed cells. This design makes them more self-sufficient and allows them to handle long periods of inactivity since they don't need regular discharging, watering, or off-gassing checks. Sealed AGM batteries' simplicity makes them a good choice for off-grid vacation homes or cabins where use is intermittent, and they tend to be a bit less expensive than gel cell batteries, the other sealed cell battery type.
Sealed AGM Batteries from Real Goods