Having trouble with a new battery..Have to jump to start my 99 jeep grand cherokee

 

If you just put new battery then take it back and get another one. It could be bad battery. When connecting battery observe for any sparks. Large sparks could indicate drain. I found few times that a/c clutch can stuck and drain battery. Turn a/c off before turning the engine off.

 

The A/C circuit has no power when the ignition is off. If you really had that happen, you had other problems.

 

I'm sure I read this on another thread, and I've used this method. Disconnect the positive terminal of your battery (without touching anything grounded) install 12v test light between cable end and positive lead of battery. If there is draw on your battery, the light in tester will be bright.With all doors closed, remove 1 fuse at a time until the test light goes out, which will identify the circuit that is draining your battery. Don't forget to pull hood light out, and any other electrical items that might come on (inside lights,ect..)

 

It sucks to hear a new battery that drains overnight... gouch has some interesting tips above...