[tripletdaddy]

First, I would start by verifying the health of your battery with a load test, often available for free at a parts store. They can also test for the output of the alternator at the same time. The only complete test of the alt is pulling it and letting the parts store test it, again for free.

Most likely your alternator is at the least having the brushes stick. I have had this problem on two of my vehicles with identical alternators. Eventually I replaced the alt on one and now wish I had tried replacing the voltage regulator brush unit instead as the alt is quite expensive and I think it could have worked. On my other car, the bat light would flicker on and off but eventually stopped a year or two ago.

Did the abs come on the same time as the bat light? I know that I tried to jump start my van with too weak a battery and somehow got it to function but wound up with an abs code for too low a voltage to the abs. That was a pita as I replaced the battery, had good voltage, but the light remained on as a hard code and I couldn't pass inspection with it on. Anyway, I got a dealer to tell me how to read it and delete it.