Resistor for voltage divider

Does it mean if I have 3s battery that I need to put in only three resistors?

If I solder in all four supplied resistors, will it not affect the voltage reading of the APM?

Thanks for any insights :)

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  • I'm assuming you have an APM1.  You only need to put in one resistor as per this page:

    It only monitors total battery voltage so only needs one resistor.  The other wires from the balance lead go nowhere on the board.

    Be VERY careful that you connect the battery positive wire to the correct pin (red wire).  If you accidentally connect it to earth pin (where the black wire is shown), you'll produce a short-circuit across the APM board which will vapourise earth tracks and possibly destroy the board.

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