The sport range is tried and tested, and recognised as offering consistent power and durability being used by enthusiasts new and old to the hobby with exceptional results. Lipo Battery Packs are fitted with JST-XH Balance plug Superb value without the loss of performance All Tornado Sport 25C cells are manufactured using the "STACKING" method, unlike many of the cheaper Chinese imports which are manufactured using the "WINDING" construction, a much cheaper construction method, with very limited discharge rates (15C - 18C) but often quoted as 20 - 25C . Stacking construction is known for its longevity, and gives stronger more reliable voltage. All pack cells are fully matched 3 ways before assembly 1) Internal resistance 2) Voltage 3) Weight