How to determine remaining hours/days for a AA battery source?

2013年3月15日 | By News | Filed in: News.
Hi guys, I am building a low battery indicator which lights up a red led when the voltage remaining is 2 days before the battery dies. The device draws about 1ma all along and 50ma for about 10 seconds every 6 hours. So how do I check when the battery would have enough voltage to last for 2 more d…
By: kurtselva

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