RE: question about a Traxxas Rustler XL-5
If you put the truck away and didn't cycle the battery packs at least once a month then the packs is dead or dying. Get yourself a new battery and you should be back in business. It's also a good idea to pull the motor out of the truck and give it a decent cleaning and lube the bushing. If you take care of the titan is should lest you a good long while.