Gel batteries

Battery charging with a wind generator or a solar panel have to ask several things: Deep discharge it and give us the maximum of its amp / hour ratings without spoiling. Here the drums of car / truck do not work as they are designed to deliver a high intensity during startup but do not give good results when downloaded more than 35%, if we lose unloaded half capacity at each discharge cycle, ie a car battery amp hour de100 can only draw 35 amps if we want to last. If the download more of this point, begin to leak, and lose ability to cycle to cycle. If one day we forgot to load and runs at all, and we can pull sulphated. The batteries that are designed to discharge up to 60% without losing many cycles are barely able to GEL and AGM. That is if we have a deep cycle battery 100 amp / hour, we can draw 60 amps / hour many cycles with little reduction in their capacity. So it takes more. And among the new Gel and AGM, the latter are the more cycles of loading and unloading support to maintain its service life. An AGM lasts almost twice as many cycles that a GEL. Also doubles as a battery starting or anchor windlass (GEL those do not work to boot). And the best part is that if you download almost entirely to the AGM only is fine.