Trinity battery pack is freat for modified and brushless motors where run time is important "VIS" stands for "voltage increasing system" packs are matched with a two second spread on run time, within three hundredths of a volt and two points on the internal resistance number. Race series features the same run time as the Team Series cells only they have lower voltage.

Charger: Having Negative DeltaV or Zero DeltaV Peaking capabilities
Discharger: Having capabilities to properly discharge batteries
Soldering on battery wire and connector of modeler's choice
Soldering Iron and solder