i can never start up my bit when i put the car on the charger it would work good then after not using it for 3 to 4 hours i would want ot race it and it wouldnt start not even on the charger i tried a new battery and it worked fine but then in 3 to 4 hours it wouldnt work i tested on my friends microsizer if it was the battery but it wasnt can anybody help me please
make sure the switch is set to on before you attach the bit to it otherwise it will not charge. make sure the LED illuminates after you attach it and it should shut off after 45 seconds fully charged. if that doesn't work, throw it out the window and try it again