12V Battery State Of Charge Indicator
With the use of 12V batteries becoming more popular (typically the 7Ah sealed lead acid), I have been requested several times to build a state of charge (SOC) meter displaying the voltage on LEDs. However, each person wants something a little different. The biggest difference is the required minimum...
By: Eric Brouwer
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By: Eric Brouwer
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[original story: Instructables]