I just replaced both my alternator and battery on my 2001 Land Cruiser. However there are times after startup the battery light will show up and I will read around 11.6V-12V. No other lights will show up even after some driving/acceleration. It will either go away while driving (resume to 13-14V) or during a different startup. Rarely I will see the battery light engage for a few seconds. Could this be a connection issue from the alternator?