One thing of note that didn't cross my mind:
I don't like to discharge my batteries until they won't fire. It's just my preference. I put in a new battery as soon as my ProVaris blink. The Stealth button doesn't light up, so it doesn't have a low battery blink. Twice now I have run them down so far I couldn't even check the battery level.
For me it's not really an issue. I've always checked the battery level through the toggle on my ProVari(s).
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