Services batteries . More starting power, maximum performance under extreme conditions, 100% maintenance-free, very lowself-discharge, recharge faster, longer life. OPTIMA ® batteries are completely sealed and absolutely spills-proof even if the block is damaged. The instant starting power is the strength of OPTIMA ® batteries. This means starting capability unmatched in professional motor subjected to intensive use, which must always be ready to go. The secret of this energy is SpiralCell OPTIMA ® technology, which ensures maximum starting power for large diesel engines and equipment for heavy work. Ideal in all sea conditions. Powerful starter battery capable of delivering the maximum power even if the engine is completely wet. This technology provides maximum starting power even in bad weather, with a temperature from + 40 ° to - 40 ° C. Due to its sturdy and waterproof construction, the battery can withstand extreme stress, providing energy without requiring any maintenance.