• Bev's Dad@lemmy.ca
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    13 days ago

    You can absolutely accurately calculate the percentage of a lithium battery. I do so every day with solar setup I live on. Even after months floating between 20% and 80% the batteries stop charging at 99.5% and would shut off if I hit 0-1%

    You just need to use a well calibrated shunt.

    • dogdeanafternoon@lemmy.ca
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      12 days ago

      Knowing fully charged and completely dead is easy. Knowing when the battery is 52% charged vs 53% charged is just an estimate.