[82gl1100iWingman]

Sounds like a weak battery. Do you have a load tester? Do you have a lot of electrical accessories added, ie driving lights or light bars? The stators on these old bikes do not produce that much watts able to run lot's of accessories. Install a volt gauge to be able to keep up with how the battery/stator is performing. The stator should be producing 14.5 volts at 2000 rpms. I have kuryakan led volt meter on my 1100. If I'm not showing a green light, I'll switch off some accessories to get a good charge. All my accessories are switched to be able to turn them off or on as needed.

 

[82gl1100iWingman]

It sounds to me more like a charging system issue.

Yes, I did address that but the symptoms he is saying is a weak battery. What is causing the new battery to be weak needs to be investigated. Is he trying to run too many electrical acessories at one time or is the stator not producing the right voltage? Is something staying on slowly draining the battery? With a load tester all this can be determined or some more information would be helpful.