Building a battery analyzer

How to build your own battery capacity meter. It measures the capacity of any rechargeable or single-use battery (Li-ion, Li-Pol, LiFePO, Sodium ion, NiMH, NiCd, Lead-acid, Alkaline, Zinc-carbon, Lithium...) in Ah or mAh and the energy in it in Wh. It works for single cells or battery packs up to 20V. The discharge rate can be set from 0.01 to 2.56A, there's also a 0.02 to 5.12A double current version.

The schematic, description and the program: https://danyk.cz/avr_aku2_en.html

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