Arrowmax latest 7.4V 2S 8200 Si-Graphene 120C Touring LiPo battery pack. Target focus for the present competition touring market. Aided by the Current stock market requirements, the latest Si- Graphene Formulation provides excellent persistence on Internal Resistance. Size at 139*47*25.1mm utilizing the fat of 320g, it's well suited for outdoor stock class, this battery pack provides a reduced internal resistance and a comparatively high average voltage platform over a 5 to 6 minutes run. "Less fade" is the key point with this battery pack for the extremely competitive stock course market.