My wife's Razr has been plagued with short battery life since day one. I think she's had it for about six months. Reading other threads, we have learned about using Smart Actions to stretch out battery life, and the recommendation that we calibrate the battery meter. From the discussions, the calibration sounds like a real good thing to do.
So, we turned her phone off, then charged to 100%. So far, so good.
We turned it back on, with the intention of draining the battery to 10%. The phone doesn't not seem to allow us to drain it that far down. It seems around 50% the phone just shuts itself off, we can't get near the 10% level. If we press the power on button, we can revive it momentarily, but then it just shuts itself off. The only way to revive it at this point is to plug it back into the charger.
Another screwy thing, it seems to come back to the 100% level pretty quickly.
This seems to be the usual modus operandi for this phone, nothing new about this behavior. So yes, it seems the battery meter needs re calibrating, but the phone won't let us do it.