ok so i parked my jeep yesterday around 3 pm. i went out to turn it on today and the battery was dead..i left my remote switch to my car stereo amplifier on so the amp drained my xj battery..i have been charging it for an hour or so i got it started but it wont stay running.. when i take my foot off the gass and stop reving it, it will cut out and lose power.. the battery is pretty much new..is there anything else this could have effected?