1998 Ford Escort won't crank

Could a faulty vacuum hose cause the battery to loose it's charge?
Could the cooling fan behind the raditor cause the battery to loose it's charge?
We charge the battery good, the car starts, but once the fan kicks in the car stalls and goes dead and then the battery gose dead instantly. That quick, have to jump it off, go through same steps and once the fan kicks in the car stalls or surges and car goes dead, battery dead again. Just stumped. Can you help or suggest something that could be causing it? Thanks Mary Ann