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- Feb 25, 2016
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Calibrating the low battery indicator circuit will make you go insane if you try and try to get it exactly where you want. The "sweet spot" on the multi turn potentiometer for around 6.2v is not large and easy to under/over shoot. And just when you think you've got it, the temperature changes, or the batteries settle in finally and now the timing is different. I'd say if you can get it to turn on 6.2v or a little over that is generally pretty useful.