jarruda wrote:1. What is the quiescent draw of the charger when just using the battery?
jarruda wrote:is normal battery voltage (3.7/4.2v) still supplied to LOAD?
jarruda wrote:3. Finally, how can I monitor the battery's current charge level?
john444 wrote:jarruda wrote:1. What is the quiescent draw of the charger when just using the battery?
I am not sure. I am not able to tell the difference between 0.01-uA and 1-uA. Both are less than I can accurately measure.
john444 wrote:A voltage divider connected from the load terminal / ground and an analog input, can be used to monitor the battery voltage level. However, the voltage divider will create a continuous current drain much larger then the MCP73871 quiesent current).
This device also has very low quiescent current drain.jarruda wrote:I'm really asking if "Leakage Current," as referenced in the data sheet, is the same thing as a circuit's quiescent draw.
jarruda wrote:I don't really understand how the Arduino's analog inputs work,
jarruda wrote:perhaps have to use a step-up boost converter to provide an AREF.
jarruda wrote:3. Finally, how can I monitor the battery's current charge level? I thought about just plugging Vin into an analog input, but I realized that because my project is unregulated it will always be the same as AREF.
jarruda wrote:So, I should be able to use the internal 1V reference and measure the direct battery voltage through an analog pin. It seems suspiciously easy to monitor the battery in this way,
jarruda wrote:things like the LiPo fuel gauge exists on SparkFun utilizing the MAX17043G+U.
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