I know nothing about voltmeters and rc vehicles. I can only advise you test it with the another battery pack that you KNOW works to rule out the rx, as they are expensive. I have over 15 of them and have had multiple problems, but have yet to see one flat out die. Of course that can happen--just letting you know my experience. If you think you've performed your due-diligence then get another one. However, there have been multiple times I was not getting power, and it turned out to be user-error.