The battery on my aging Lenovo 230x goes from 60% to 10% very quickly. I don't mind investing $50 in a new battery to save from buying a new laptop, How do I measure the the capability of a new ...
The better the analog front-end for measuring battery current, the more accurately you'll be able to gauge the remaining run-time for your battery-backup system. Here's a discrete front-end design ...
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