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Topic: How to test battery level with Arduino? (Read 20340 times) previous topic - next topic

Mastino

Sorry Sorry! I am so fool.. Yes you are right! It is working well! Only one more question: Will it fast discharge the battery? I mean this divider. 
Many thanks for your answers!

retrolefty


Sorry Sorry! I am so fool.. Yes you are right! It is working well! Only one more question: Will it fast discharge the battery? I mean this divider. 
Many thanks for your answers!


That depends on the resistance values you selected for the voltage divider. Just add the value of both resistors together then the formula is I (current) = voltage / resistance. That is the steady state current draw plus whatever the arduino board is drawing. The MAH rating of the battery should give you the overall current capacity over time that the battery charge has.

Lefty

jumpering

Wow! Thanks Etrolefty, Master coder!

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