these batteries should really get your truck moving with a 1518. they are cheap and are very good batteries. i have over a dozen turnigy packs and they have done better than even my neu-energy packs.
They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.