OPTIMA® REDTOP® batteries with SPIRALCELL TECHNOLOGIE® have an extremely low internal resistance and therefore provide an extraordinary amount of starting power during the first few seconds. This makes them ideal for applications where starting power is a priority. Agricultural and road construction machinery, emergency services, off-road vehicles and aggregates are typical applications for which OPTIMA REDTOP batteries are in great demand. The low internal resistance also makes it possible to quickly restore the tension after short journeys. The exceptionally low self-discharge of the REDTOP means that you cannot use the battery for a longer period of time and still start it without any problems. The SPIRALCELL TECHNOLOGY ensures the lowest internal resistance of currently available lead batteries. And has a fast charging capacity to quickly restore the voltage after short trips. But the OPTIMA REDTOP offers much more than just a powerful starting power. The battery has a three times longer life and is up to fifteen times more resistant to vibrations than other batteries.