I got my Challenger 30-1194-1 out of the box and placed the battery in it as i have done for the last couple of years for my Christmas layout Hooked up my TIU to Fixed 1 and set my transformer at 18 VAC as i have done previously and let it set for an hour to make sure the battery was charged. When I tried to start it up via the hand held the first time i tried it recognized the engine and allowed me to use the # 3 button to start it up but the volume is extremely low. it would allow me to move the engine in forward and reverse using the thumb wheel I only tried it up to 3 SMPH. I checked power at the track 18.0 VAC. I checked power on the battery with track power applied 8.4 and unhooked is 6.4 VAC is the battery bad? when i powered it back up now it does not recognize the engine and will not allow me add it. Any and all suggestions greatly appreciated. Sam