Software developer from Germany with interests in programming, electronics, flashlights, calculators, writing instruments and various outdoor activities.

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See also: /u/SammysHP@feddit.de

  • 14 Posts
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Joined 10 months ago
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Cake day: September 4th, 2023

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  • The protection circuit of a cylindrical Li-Ion battery doesn’t report anything. All it can do is to interrupt the circuit if the current gets too high or the voltage too low.

    You might mix this up with tool batteries that usually have multiple cells in a series and in parallel, monitored by a battery management system (BMS).

    Most quality flashlights have an integrated low voltage protection. The protection PCB will only protect the battery when it’s handled outside of the flashlight, but it will usually reduce the performance and efficiency due to the added resistance.