I have a 2004 GX470 with the original battery. Lately I could tell the battery was going bad when starting the car. I took the battery to Advance Auto Parts and they tested it and the test said it was still good but it needed a charge. I brought it home, cleaned up the indicator window that is on top of the battery. The indicator also showed that the battery just needed to be recharged (red dot with a white ring around it). I have been slow charging the battery (2 amps) for the last 24 hours and the indicator has not changed. I am thinking this basically means the battery is not recoverable. Has this happened to anyone else?