How to read dc high voltages


I have 6 batteries . Which are 12 volts and 80 amps each.
I have connected them in series so giving me 72 volts. I want to read this voltage via arduino dc voltage sensor but its limit is 25 volt dc.

Is there any way that i can reduce the 72 volts to like 20 volts via resistors ??


You can reduce 72 volts to around 4 volts with 1k / 18k potential divider for a 5volt arduino.
The 1k resistor goes between ground and an analog pin. The 18k goes from the analog pin to the battery positive. That is without using your existing voltage divider device.
Scale up the value read from the analog pin.