The Maxon MXG 2 Volt range of solar batteries are a fully sealed, leak proof Gel Hybrid Battery which have been specifically designed for off grid solar & wind powered systems. By adopting thicker grids, high purity 99.99% lead and patented Silicon Gel electrolyte they offer excellent recovery performance after deep discharge under frequent cyclic discharge use, and can deliver up to 2,500 cycles @30% DOD. Suitable all solar and green energy systems.