• EEVblog #204 – Designing a Li-Ion Battery Gauge with the LM3914


    How to design, prototype and test a two cell 18650 Lithium Ion battery pack level gauge using the classic LM3914 dot/bargraph display driver chip.
    A favorite from Dave’s youth!
    Dave gives you all you need to know to implement a simple expanded scale voltmeter with the LM3914, without adjustment pots to tweak.
    This one works from 6V to 8.4V – the usable capacity of a two 2 cell 4.2V Li-Ion batttery pack.

    Be Sociable, Share!

      About EEVblog

      Check Also

      EEVblog #1040 – Caesium Beam Frequency Standards

      A look at the Caesium beam time and frequency standards at the Keysight standards lab ...

      The EEVblog Store generally ships twice a week, on Tuesdays & Fridays, Sydney time. Dismiss