how can I display battery percentage of my 12v battery using arduino? Can anyone provide the voltage divider circuit with appropriate resistors and code?
I am using rechargeable 12v Li-ion battery.
have you googled for "voltage devider" and inserted the numbers to get the highly sophisticated 2 resistor values?
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Try reading arduino/reference and look for analog reading.
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There are no 12V Li-ion batteries. Do you mean an 11.1V or a 14.8V?
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Thank you
Hi, @amalpv798
Google;
arduino battery voltage monitor
This will give you some info on how its done.
Tom.. 
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Make sure the battery is not connected if the Arduino is not powered
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