Victron energy BMV-700 Manual page 6

b) Press any button to stop scrolling and the factory default value  Ah
will appear in edit mode: the first digit will blink.
Enter the desired value with the + and – buttons.
c) Press SELECT to set the next digit in the same manner.
Repeat this procedure until the required battery capacity is displayed.
The capacity is automatically stored in non-volatile memory when the last
digit has been set by pressing SELECT. This is indicated with a short beep.
If a correction has to be made, press SELECT again and repeat the
procedure.
d) BMV-700 and 700H: press SETUP or + or – to end the setup wizard and
switch to normal operating mode.
BMV-702: press SETUP or + or – to proceed to auxiliary input setting.
1.2 Auxiliary input (BMV-702 only)
a) The display will show   scrolling.
b) Press SELECT to stop scrolling and the LCD will show: 
Use the + or – key to select the required function of the auxiliary input:

for monitoring the starter battery voltage.

for monitoring the mid-point voltage of a battery bank.

for using the optional temperature sensor
Press SELECT to confirm. Confirmation is indicated with a short beep.
c) Press SETUP or + or – to end the setup wizard and switch to normal
operating mode.
The BMV is now ready for use.
When powered up for the first time, the BMV will display 100% state of
charge.
When in normal mode the backlight of the BMV switches off after no key
has been pressed for 60 seconds. Press any key to restore backlight.
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