ASTERION GX are sealed maintenance-free lead-acid batteries with gas recombination system (VRLA). Are manufactured by GEL technology (electrolite immobilized by the addition of fumed silica). ASTERION GX batteries are less prone to electrolyte drainage and acid stratification. Accordingly, gel technology offers advantage in applications where long life and deepcycling are prime requirements , e.g. in motive power for in-plant vehicles or renewable energy systems. The series is highly reliable and has a service-life up to 15 years