What is an optima battery? OPTIMA batteries are made with pure lead SPIRALCELL TECHNOLOGY that delivers the high cranking power required for starting large diesel engines within generators. With a higher energy density than conventional batteries, OPTIMA batteries require much less space than other batteries used to power generators.How do i contact optima customer service? For technical or warranty support, please call OPTIMA customer service at 1-888-867-8462 (888-8OPTIMA) between 9 a.m. and 5 p.m. (CST) Monday through Friday, or via email at [email protected] . Why does an OPTIMA® Battery have a longer life than other batteries?Will my optima battery experience gassing? A: Rarely will an Optima battery experience gassing. Optima batteries should be used properly with a regulated voltage charging system. Under these conditions, an Optima battery will typically not gas. However, gassing can possibly occur if you charge an Optima battery at a higher voltage than specified.What kind of battery is the d27f optima? The D27F Optima spiral cell design with the plates wound tightly around a central core gives exceptional vibration resistance (15 times more than most batteries) The Optima D27F is an extremely tough battery, with huge cranking amps for its size.