Solar Dryfit Batteries, 12V Nominal capacity range: 27 to 90Ah Battery completely maintenance free (electrolyte fixed in gel form) High energy density and very low gassing Short recharging time Long service life of minimum 6 years Shelf life: 2 years at 20°C Trouble-free transportation Dryfit solar specifically designed for the requirements of solar and wind generated energy storage. Optimum performance for lower power applications Warning Do not charge in a sealed enclosure!