It's difficult to find a battery meter than can cope with wide voltage ranges. Not only does the Baiway achieve this, but its built-in MCU will allow you to configure it for series connections of Li-ion, LiFePO4 and lead acid to show a capacity-remaining percentage.
Now clearly it's using a "straight-line" voltage extrapolation, but for a simple approximation, this is a pretty neat and versatile display.
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Негізгі бет Ғылым және технология Baiway Configurable Multi-chemistry Battery Meter. 3.2-70V
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