Testing power bank capacity with Librem 5

[riabenko]

@amarok

cat /sys/class/power_supply/tps6598x-source-psy-0-003f/uevent

Does that work for what you want to see?

The values of POWER_SUPPLY_CURRENT_MAX and POWER_SUPPLY_VOLTAGE_MAX show the maximum current and voltage negotiated between Librem 5 and the power bank. The real values must be different. I saw a photo with the output of that command on a Librem 5 connected to a power meter in another post.

@j_s

Some years ago someone did extensive testing on Librem 5 discharging and charging using a USB power meter and an app on the L5 with lots of graphs and photographs but I have not been able to find the threads.

Maybe “A Humble Librem 5 Daily User Review” or “USB-DCP-5V-1.5A protocol and Librem 5” by @Quarnero ?

@irvinewade

Blog post maybe rather than a topic?

There is a blog post from Purism “Charging the Librem 5” but it concerns the battery capacity, not the currents. They do not mention what software they used to get the data and make the graphs.