Why does a battery go dead in a 1994 astro van only in the morning?

Your battery may have a bad cell � have your local auto parts store �test� the battery for �load� � most do this for free; If you find the only one that wants to charge, go somewhere else. If it is not the battery then you have an overnight power drain. A light staying on, the radar detector plugged in, the DVD player plugged in, the Cell phone charger plugged in. Anyone can find the easy fixes, the hard ones are just that. These types of drains can normally only be found with an AMP meter and by going through every base circuit in the van to find what is drawing power and then determining what should not be drawing power. � To imagine the complication in this procedure, imagine you�re the water company, and someone has a leaking faucet, and you need to know who it is. So, you turn off everyone�s water and then turn them back on, one at a time until you find the one pipe that shows someone using water. Then you follow that pipe to the block it supplies, then go door to door � ETC � This is best left to someone who knows car electrical systems. A 1998 AWD ASTRO - My battery was sometimes dead. Dealer reported finding no problems. By chance, I discovered excess grease in passenger window lift track penetrated and shorts the electronic window lift motor - A warm day, at night grease gells by morning the battery would be dead.