I have a new alternate USB cord arriving later today, and a pair of modern bricks that will hopefully work well. I made sure they matched the power requirements from the wiki. I'll probably try it out, too.
Quick edit: I just opened up the PBP (sleeping CrOS on emmc) and CrOS is giving me a battery level indication of 70% (and climbing!) 66 has been surpassed! I'll still be doing testing later to compare the 3 potential charging setups. Hopefully, though, the PBP is fully charged by the time EOD rolls around and I can verify no loss in battery health. Now I do wonder if this was a combination of high power consumption from the NVMe drive, and how Linux handled the drive once installed.
Quick edit: I just opened up the PBP (sleeping CrOS on emmc) and CrOS is giving me a battery level indication of 70% (and climbing!) 66 has been surpassed! I'll still be doing testing later to compare the 3 potential charging setups. Hopefully, though, the PBP is fully charged by the time EOD rolls around and I can verify no loss in battery health. Now I do wonder if this was a combination of high power consumption from the NVMe drive, and how Linux handled the drive once installed.