RE: Thingy91 battery fuel gauge

RicardoPereira — Mon, 08 Jun 2020 16:07:27 GMT

Hi,

Can i ask you where did you find this chart ?

RE: Thingy91 battery fuel gauge

AndrewR — Wed, 18 Dec 2019 15:29:03 GMT

Thanks Martin.

I got this AT command to run and it runs successfully. It returned what I assume is millivolts. I have seen values of 4430, 4438, 4434. I am under the impression that a LiPo battery like the 1 connected to the thingy91 maxes out at 4.2 volts or 4200 millivolts. I'm not sure if I am looking at this correctly. I will try to drain the battery to see if I can get it under 4400 and report back. If I am missing something please let me know.

Also I found a LiPo voltage to charge % relationship chart. If there is a more direct method of converting voltage into % charge please let me know.

Capacity %	voltage
100	4.2
95	4.15
90	4.11
85	4.08
80	4.02
75	3.98
70	3.95
65	3.91
60	3.87
55	3.85
50	3.84
45	3.82
40	3.8
35	3.79
30	3.77
25	3.75
20	3.73
15	3.71
10	3.69
5	3.61
0	3.27

RE: Thingy91 battery fuel gauge

Martin Lesund — Tue, 17 Dec 2019 13:22:14 GMT

Hi Andrew,

You can check the battery voltage with the AT command AT%XVBAT

Best regards,

Martin L.