was putting in a different stereo in the forester oem , had key on for awhile , after install battery dead, jumped battery everything good, wondering if battery is going bad, it looks older , yes leaving the key on will kill battery but after awhile not 5 min

odd.. I've taken a nap in my Legacy and almost 2 hours lady my Alpine headunit (CDE-9856) was still playing and no dead battery.

It all depends how much power you're drawing. If you have a large system and were really cranking it you could drain a starter battery in that amount of time. Especially if the battery is more than a couple years old. Starter batteries do not like to be discharged very much - doing that greatly decreases their life. Get a deep cycle battery if you want to run the stereo a lot without the engine running, such as an Odyssey or Optima or other AGM.

It's also possible that your alternator is not fully charging your battery any longer. Have the battery and alternator checked by someone you trust.

Suggest pulling the caps off the battery to see if the water level is full in the battery.

new alt, old battery it is a oem stereo from a newer outback ,broke the door switch also board ,now window will not go up, never did this before all plug and play now dead battery ???????dam

Edited August 30, 201015 yr by 86subaru

ok, found a different master switch , still drivers window will not go up ,.a buzzing noise in door now all others work , battery seems to hold a charge now, could i have not hooked up something while having the door panel off ,thanks

took door panel off , found window motor unplugged, had more trouble putting door panel back on,

What year? I'm scared to take my door panel off I remember back in 1999 having to do it on my Nissan Maxima and what a pain it was to get back on..

99 forester , it took 2 people to put it back on,

I removed my 96 OBW left side door panel twice in the past 5 years to work on the window master switch. First time it didn't take me long but the second time, for some reason the panel did not want to go back. Took me a good 30 minutes just to reinstall the panel. Hope I don't have to do it again.