going to buy a car that wont crank but will turn over

If the <a href="http://www.cartechhome.com/2009/04/car-wont-start-turn-over-slowly-when.html">car wont start and turns over slowly</a> it is possible that the problem is battery. Source: http://www.cartechhome.com/2009/04/car-wont-start-turn-over-slowly-when.html