Super B batteries are based on Lithium Iron Phosphate technology (LiFePO4); the safest Lithium Battery currently available.  These Lithium Ion Batteries weighing up to 80% less than conventional lead acid batteries, and take less than 1/2 the space. Super B makes one Awesome Lithium Battery!  Benefits like Long service life and Low self discharge, make this Lithium Battery  perfect for numerous applications. Super B makes one Awesome Lithium Battery!  Benefits like Long service life and Low self discharge, make this Lithium Battery perfect for numerous applications. 
DTM Group C WRC BTCC WTCC NASCAR LMS GT’s

 Pete says the  Super B Orange Top Lithium battery was specifically designed for racing applications where performance and weight are important factors. Car/Truck/Boat (“Starting applications”) Super B Green Top – Lithium Iron Traction battery is designed for heavy cycle use “deep cycle applications) We are talking 2000 to 4000 charge/discharge cycles here. This lithium battery has a very low self discharge rate – 10% annually – Not Monthly! Power that will keep you going and going. Fastest recharge time found in any lithium battery – Fully Charged in 60 Minutes!

F.I.M. / Stock Racing

The F.I.M. modified the regulations for stock racing regarding battery use.
Article 2.7.9.5 Battery: The Battery may be replaced. If replaced, its nominal capacity must be equal to or higher than the Homologated type. The F.I.M. has approved the super B battery for use as replacement battery.