Sealed Gel Cell Batteries
Gel cell batteries use sealed cells for versatile, low-maintenance power storage. Like AGM batteries, sealed gel cell batteries typically find application in utility backup or vacation cabins since there's no watering. Gel cell batteries tend to have a bit longer cycle life than AGMs, but the trade-off is that they are more limited in their ability to deliver peak power so you may be able to get away with a smaller bank if you choose AGMs.
Sealed Gel Cell Batteries from Real Goods