Smoke Detector: disable Low Battery chirp

I know, we're supposed to clean them monthly to avoid False alarms, IMHO that is not the issue. I think it's a low battery issue. If they are designed like most old style SD, they chirp when the battery is low. I think this chirp is triggering an alarm. Because, the SD is not blaring when I am awakened in the middle of the night by SS, just the siren.

I have two separate systems and it happens on both systems, which got me to thinking about the low battery chirp as a possible cause for the false alarms. On the most recent false alarm, I tested the old and new batteries, new - 3.2V, 9+amps, old - 3V, 5+ amps.

I've never had a 9 volt smoke detector that gave me a false alarm for dust and dirt or have I ever cleaned one in my 50 some years of home ownership. 

If my theory is correct, take the low battery chirp out and give us a low battery warning light that doesn't trigger a SS phone call in the middle of the night.