An AGM battery can withstand several times more charge and discharge than a normal battery. They are also incredibly safe, because the battery fluid is absorbed in glass wool, between lead plates. This way the battery is completely leak proof and service free. They are so safe, that they can even be installed inside the cabin, but however, we recommend to install AGM batteries outside. Optimum location would be some place where the sun doesn't shine, for example under the cabin. Battery temperature affects it's operation and high temperatures dramatically reduce battery life.