this post was submitted on 09 Sep 2026
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Less. They're usually just a couple AAAs, so like 1800 mAh.
I recall it being about a day when I worked on those exact devices. For comparison, my tiny Bluetooth earpiece can run for about six hours.
It's scary how much data you can transmit with those batteries on optimized hardware.
I have IoT things eating more data than a cheap voice call that last months.