Re: Help! my 2001 929 is dead :(
So you have a new battery installed and you still have this problem? That's what I'm understanding here.
Really sounds like your issue is from an insufficient battery.
It makes sense that you could get about 30 minutes or more operating time from a new battery even without any charging.
Are you sure you checked your reg/rec and stator properly with a multimeter?
Assuming yes, maybe you have a defective battery?
What's voltage after the battery has been at rest for a couple hours?
When you checked your fpr, did you cycle the ignition key?