Traxxas 2975 4-Amp DC Peak Detecting NiMH Fast Charger Uses a 12-Volt DC power outlet for charging in the field Peak-detecting charger is optimized for charging Traxxas Power Cell NiMH battery packs Brilliant LED provides charging status while the battery charges Just plug the a Power Cell battery in for a perfect charge, run after run Charges 6-cell 7.2V NiMH batteries or 7-cell 8.4V NiMH batteries (Not suitable for LiPo batteries)