The code below from Muse Luxe maps battery voltage to percent, specifically 4.58V to 100% and 3.27V to 0%. How?? A Li-Ion cell has a nominal voltage of 3.7V and usually 3V is considered 0% and 4.2V is considered 100%. This code makes absolutely zero sense.
Needless to say, my battery percentage makes no sense either:
- platform: template
name: Battery
id: battery_percent
device_class: battery
unit_of_measurement: "%"
accuracy_decimals: 0
state_class: measurement
entity_category: diagnostic
update_interval: 15s
filters:
- calibrate_polynomial:
degree: 3
datapoints:
- 4.58 -> 100.0
- 4.5 -> 97.1
- 4.47 -> 94.2
- 4.44 -> 88.4
- 4.42 -> 82.7
- 4.41 -> 76.9
- 4.41 -> 71.1
- 4.37 -> 65.3
- 4.35 -> 59.5
- 4.31 -> 53.8
- 4.28 -> 48.0
- 4.26 -> 42.2
- 4.23 -> 36.4
- 4.21 -> 30.6
- 4.19 -> 24.9
- 4.16 -> 19.1
- 4.1 -> 13.3
- 4.07 -> 10.4
- 4.03 -> 7.5
- 3.97 -> 4.6
- 3.82 -> 1.7
- 3.27 -> 0.0
- lambda: return clamp(x, 0.0f, 100.0f);
Can anyone explain how the code above makes sense?