Jeep doesn't start. Turn key, hear slight click in fuse box but nothing else? Took battery out to be checked Pep Boys says its good, needs a "slight" charge. Went home reinstalled the clean battery, nothing?? Put it on charge. 15 min later all is good. I've started it several times since, but still very afaid it won't start when needed? Battery? Starter? Starter relay?

Clean all connections very good ( batt post connectors,gound wire from batt to frame/motor, also clean starter connections,and alternator connections) I know pep boys checked but you cannot properly check a battery unless it has a full charge!!!!! If it wont accept a full charge then batt is bad, If it charges to a full charge and fails a draw test the batt is bad. also when a draw test is done you can have the charging system checked also to make sure batt is recieving the proper charge input. all inexpensive checks, get it running and take it to a garage, 3 min test usually not even a charge most of the time. NOT A DEALER, and have them show you what they are doing. if you are a female have a male friend go with you or have it done. I dont care what anybody says!!!!!! When it comes to a inexperienced female, the DEALERSHIP,the REPAIR GARAGES will all try to get some kind of MONEY out of you before you leave their place of business.

Have you tried to shake the shifter? If that works, more than likely it's your neutral relay switch. I say this because I have a 1996 cherokee sport and it did the same thing to me and turns out it was the neutral relay switch. Good luck, I hope you get her running good and take good care of it.

Your starter could be a little gummed up its common with older rigs just tap it with the handle of a screwdriver firmly

FAULTY STARTER RELAY MORE LIKELY IF YOU HEAR CLICKING IN THE FUSE BOX.