2007 Ford focus starting problems?

2007 Ford focus. I have a steep driveway and when i park on it the car just clicks when I try to start it. Have had it in the shop 17 says out of the last month, Always starts right up. Could it have something to do with parking o a steep driveway? I have a jump pack and it will start right up.

If it's a single click then it's the starter, if it's multiple clicks it's the battery or altenator.
My other thought is the fuel is sitting on one side of the tank and is starving the pump but if jumping it makes it work then It's more likely to be the above mentioned.

Get your battery tested

I have a 2007 fusion 4 cyl. Alternator went out and overcharged battery. I changed alternator and battery. Car is completely dead… No power anywhere and car won't jump start… Help