BATTERY DEAD...AGAIN...fml

[H3Novice]

Okay, my g/f's H3 battery died. I jumped the vehicle and drove it around for about 20 min to make sure it wasn't the altinator. I turned the vehicle off. Wouldn't start...okay so it's just a bad battery.

I pick up a new battery and install it. Car starts...great my job is done...NAUGHT...Now the Stereo is malfunctioning...doing dianostics and eating CDs...I think nothing of it.

Next day the battery is dead. I blame it on the CD player that doesn't turn off when the vehicle is switched off. I pull the fuse on the CD player, jump the H3. Drive it for 20 min...turn it off...turn it back on! YES I'm done...she needs a new stereo (factory stereo FYI). I'm done...NAUGHT!

A week goes by with no problems...then TODAY she gets in the H3, won't start. Battery dead...WHAT IS GOING ON!?