Was the battery truly dead? Did it come good after just a minute or two on the charger?
I have seen batteries go open and be dead as a door nail, then come back to life virtually as soon as a charger was connected...Wa
s a defective battery.
Really not enuf data to give you an opinion here...
If something drained the battery that fast, you would probably have a fire starting in the cables or battery so something is missing here