Traxxas 4200mah 7.4v 2-cell 25C LiPO Battery Traxxas’ 4200mAh Power Cell LiPo packs are ideal for all Slash and Slash 4X4 models, E-Maxx Brushless Edition, and E-Revo Brushless Edition. Power Cell LiPo packs are engineered to give the punch and on-demand