February 20, 2018 at 9:03 am #79611
- Posts: 885
I made a short test with my Jumper Ezbook 3S to show how different states influence the battery endurance (the time you can run with on full charge).
1. brightness set to 5% processor idle 9%: needs below 3 watt
2. brightness set to 100% processor idle 11%: needs above 6 watt
3.brightness set to 100% processor runs at 100%: needs above 16 watt
With the battery capacity of 50 W/h and a usage of 5 watt/hour the endurance is around 8+ hours
this is very light tasks at minimum brightness
With the battery capacity of 50 W/h and a usage of 10 watt/hour the endurance is around 4+ hours
this is medium tasks at 50 to 75% brightness
With the battery capacity of 50 W/h and a usage of 15 watt/hour the endurance is around 3 hours
this is with good cooling and TDP set to 10 watt, the turbo time limit set to hours not seconds
and heavy tasks (games, encoding etc.) at maximum brightness
If you have an external HDD attached, that is around 2 watt
If you have an thumb-drive attached to the USB 3 port it will use more power than on the USB 2 port.
The faster you transfer data on a SSD (m.2 to micro SD) the hotter it gets and the more power you use.
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1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks
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