As far as impact protection is concerned, one can disagree.
The electronic parts on the RC car are responsible for the fun of the sport. On RTR (ready to run) models such as the Dune Fighter, the motor, steering servo, controller and RC unit are already matched to each other. However, every RC tinkerer has his own preferences here.
The current technology is called lithium-polymer accumulator. As with most lithium-ion batteries, the negative electrode is graphite, the positive electrode is lithium metal oxide.