Besides the issue of Hal Holbrook, there's two issues here:
- How much current your device takes with a video in a browser.
- What the actual capacity of your battery is.
Ok, the two combine for the useful parameter of how long you can play video.
On my Poke3 you can read (if you're rooted):
Code:
# cat /sys/devices/soc/800f000.qcom,spmi/spmi-0/spmi0-00/800f000.qcom,spmi:qcom,pm660@0:qcom,qpnp-smb2/power_supply/battery/charge_counter
(I'm not sure if the separate "shadow" register is one that is reset by the OS.)
You could ask somebody with the same model:
- Charge fully up
- Measure the battery voltage and the charge_counter
- Run a video for x length of time
- Measure the battery voltage and the charge_counter
The differences in voltage should be about the same, the differences in the charge_counters should be about the same.
Me, I do so much dev and only read books that I never actually (specifically) charge my devices.