Yes, this is very important. Even batteries with little charge in them will read close to 1.5V if they're not loaded.Please put a current load on the battery under test, voltage will not tell you anything about the batteries internal impedance.
Frank
your distance between voltage measuring point and mc is not known.
Yes, this is very important. Even batteries with little charge in them will read close to 1.5V if they're not loaded.
What kind of microcontroller are you planning to use? Many have internal ADCs, in which case the interface is just a couple wires and a load resistor.
means put some load resistor, so that you have more reliable readings from the battery.Even batteries with little charge in them will read close to 1.5V if they're not loaded
The Arduino Mega does have several analog ADC inputs. The ADC is 10 bits, which will give you about 5mV of resolution with a 5V reference voltage.I am using an ArduinoMega which from what I gathered does not have an internal ADC, to be honest it is my first time controlling with a microcontroller, I have only worked with Ladder Logic till now and I was told the Arduino is easier to pick up than other microcontrollers such as the 8051.
The Arduino Mega does have several analog ADC inputs. The ADC is 10 bits, which will give you about 5mV of resolution with a 5V reference voltage.
Can I measured voltage by sensing di/dt?
You need to reset peak detector between two measurement.
How would battery be charged it show by 5 LEDs and show that if battery is charge 20% 1st LED blow, 40% 2nd LED blow...................5th LED blow means full charge.How it can possible?
Please put a current load on the battery under test, voltage will not tell you anything about the batteries internal impedance.
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