Can you drop the voltage of a lithium polymer pack?

[nitrohead5300]

Is there any way that you can drop the voltage of a 7.4 volt lithium polymer pack down to 6 volts? I would like to use it in a nitro on road car. Seems like you could use a resistor or something.

[AudiTT-Quattro]

Resistors will work but I don't recommend it. Look into a small BEC unit.

[asw7576]

Schottky diode, you use big amperage schottky diodes in series until you get the desired voltage. Diodes work as voltage barrier, it will drop the voltage pass through it. The amout of current flow will depend on the size of diode, so you must find big diodes to in order to pass more current.

Use two or three diodes connected in series. Measure the voltage with voltmeter okay ?

Here is the diagram, watch the polarity ( the ring | ) and flow direction:

battery positive output ---->D|----->D|----->D|-----> receiver positive

battery negative output ----direct cable, no diode----> receiver negative

I think schottky diode that comes from ESC is sufficient to provide current for receiver and servo. If you want to double the current, you can parallel the diodes.

[nitrohead5300]

thanks fellows

[AudiTT-Quattro]

The one thing to be concerned about when using either resistors or diodes is terminal voltage especially when using high drain electronics such as high torque/speed servos. A well built BEC will compensate for the voltage drop in the battery pack and will sustain the same voltage to the receiver for as long as possible.

IMHO, when it comes to nitros, either do it right or don't do it at all... Either that or it gets really expensive, really fast...

[nitrohead5300]

Thank you for your input.