I can confirm the about 1 % power drain per hour during suspend (in my case 20 % per 24 hours).
IMHO this is still too high but good enough for mobile working “on the read”.
Background:
I have replaced my original RAM from Crucial CT16G4SFD8213.C16HF1 (see picture) with a new Samsung RAM (M471A2K43CB1-CRC) since the original RAM had a massive power drain during suspend (I don’t know who to blame but the problem seems limited to one special Crucial RAM type - I did not send my librem 13v2 to purism since I want to support them and treat this as a “donation”).
The new RAM is DDR4-2400 though the librem 13v2 supports only 2133 MHz but higher rated modules will clock down to lower speeds without any issues.
I still have not used powertop to try to optimize the power consumption and I am still not using the most recent “BIOS” update (coreboot) so I expect an improvement (lowering power drain) in the future.
Edit:
I forgot to mention
- I am using Ubuntu 18.04.01 (point release 1)
- kill switches are set to switch off the the camera and wifi (so the power consumption could be higher if switched on)