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How do you tell if a 12V battery is fully charged?
I'm reading that a good fully charged battery should be at 12.3 V resting. My battery has been sitting on a smart charger and maintainer and says 12V only and the charger
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![12V Battery Charger Circuits [using LM317, LM338, L200, Transistors] - Homemade Circuit Projects](https://www.homemade-circuits.com/wp-content/uploads/2019/07/TIP122-simplest-12V-battery-charger-circuit.png "12V Battery Charger Circuits [using LM317, LM338, L200, Transistors] - Homemade Circuit Projects")