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“Greetings. This instructable lists a charging lithium cell capacity. Other testers I’ve found work by discharging the cell completely, but I wanted to have ready to use cells with a standarized voltage. The monitor works by Ohm’s Law …
Content for MAX4209
The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional precision specifications, low power consumption, rail-to-rail output, excellent gain-bandwidth product, and buffered REFIN/MODE input in a very small µMAX® package. These devices use a spread-spectrum, autozeroing technique that constantly measures and corrects the input offset, eliminating drift over time and temperature and the effect of 1/f noise. This technique achieves less than 20µV offset voltage, allows ground-sensing capability, provides ultra-low CMOS input bias current and increased common-mode rejection performance.