Charging

Mon 2020.01.13

'Where are those two things written?'

As those 1000+ emails have caused some mental anguish, ;-) the link is in the #2 post, just above my comment.

link reposted here:

https://www.espruino.com/Bangle.js

Both found under 'Features' tenth bullet and 'Power Consumption' first bullet and comment beneath that grouping.

And an update on my actual usage

100% CPU usage running JavaScript - 7mA
LCD on - 40mA

On a brand new only charged once Beta Bangle, I ran a Javascript battery monitor endless loop, updating the display every five seconds until battery death. Ran for eleven hours!

Calc: 350 / (7 + 40) = 7.44 hr

So maybe the display is slightly better than advertised? Super conservative est ~30ma
or an actual pixel on percentage needs to be taken into account? Didn't think LCDs worked that way though.

Calc: 350 / (7 + 30) = 9.46 hr
Calc: 350 / (7 + 25) = 10.92 hr
or
Est: 11 * (7 + 40) = 517 mAhr

Which seems unlikely ~30% improvement over listed?

It will be interesting to see how LiIon holds out over time, after daily charging cycles. I expect it to drop off after 50-100 as the articles inform us.

Bangle LiIon     https://www.espruino.com/Bangle.js+Techn­ical

'underestimating the battery life so people don't complain if it doesn't reach the advertised though'

Understood, and by my first inital test, makes sense so I wouldn't change the content. More concerned about standby and idle concept difference.