Show HN: Making an 1800mah e-ink device last up to 6 months(trmnl.com)9 points·by ryanckulp·5 เดือนที่ผ่านมา·0 commentstrmnl.comShow HN: Making an 1800mah e-ink device last up to 6 monthshttps://trmnl.com/blog/power-efficiency0 commentsPost comment—