My battery wont stay running after it gets a charge? on 1995 Jeep Grand Cherokee

My battery wont stay running after it gets a charge

1 answer 2 comments
how is it being charged and tested before putting it back in the vehicle?
I tried to jump it and it wouldnt hold the charge
Best thing to do is buy a new battery and have it installed properly any Sears, Interstate Battery, Napa Auto Parts etc will work