Pinphone keyboard internal battery capacity is 6000mAh
This gives a total of 9000mAh.
According to Chris Titus Tech PinePhone attached to PinePhone keyboard runs a couple of hours whatever you do.
We suppose this setup can be compared to a setup with a Raspberry 4 and a 10 000 mAh power bank. Running time data for this setup from Explaining computers are shown here:
Explaining computers reached around 7 hrs running time with a Raspberry Pi 4 and a 10 000 mAh battery.
We did a first test with a Raspberry Pi3 running Ubuntu mate and a 10 000 mAh battery in idle
Battery life was much lower than with the data of Explaining computers.
Explaining computers did not test the Raspberry Pi 3, but the Raspberry Pi 4
Since we do not have other data we compare the data our our Raspberry Pi 3 to the Raspberry Pi 4 data of Esplaining Computers.
Explaining Computers had a running time of about 7 hours with a Raspberry Pi 4 and a 10 000 mAh power bank
The MRIS had a running time of about 4 hours with a Raspberry Pi 3 and a 10 000 mAh power bank with Ubuntu Mate in idle.
