Knuckles! KNUCKLES! Are you listening, Knuckles? This is God speaking! I command you go forth with the fully charged Sacred Pack to the peak of the Mountain of the Alter of Flame. Connect the sacred RED wire to the blasphemous BLACK wire. I demand proof of your Faith and Obedience. Film it for all to see on the Tube of You! Rejoice in My command! Hallaloogie!
Yes, I recognize those as Hymotion plug in Prius conversion packs.
They have very nice cell holders and the boards on the end have balancing shunt circuits (that are powered by the pack).