4 layers106 × 29.2 mm

Batterymeter
hb020/batterymeter
Handheld Battery AC and Time Domain characterization tool on Attiny series 2
129 parts20
Boards in 1 GitHub repository, designed in KiCad, that use the SMP5484 by InterFET (-55℃~+125℃ 1 N-channel 25V 300mV 360mW 4.3pF 5mA N-Channel SOT23 JFETs ROHS). See how each wires it, with its parts, size, README and files; the SMP5484’s symbol, footprint and pinout are on its own page.

hb020/batterymeter
Handheld Battery AC and Time Domain characterization tool on Attiny series 2