The valve-regulated, spill-proof construction of sealed lead acid batteries allows trouble-free, safe operation in any position. There is no need to add electrolytes, as gases generated during charging are recombined in a unique “oxygen cycle”. The Reservo MF batteries range is designed to perform at a low-maintenance cost. Absorbed Glass Mat (AGM) design to become sealed once activated; also improves the lifespan and resistance of the battery in tough conditions.