Technical Voltage Questions - Newbie

[hoveringal]

Hello everyone.. Just purchased a wireless FPV system from Hobby Wireless in Texas for my Flamewheel 450. I could use some advice on misc voltage issues. I plan on being away from electrical power and will be dependant on using individual Li-Po batteries to power the monitor, transmitter & reciever.

QUESTION A: The Reciever (R5800X) specs say it can operate between 8-12 volts, but cooler on 8 volts. Rather than an 11.1 volt Li-Po, should I use a 7.4 volt, 2200mah/25C battery??

QUESTION B: The Transmitter (TXV584) specs say it can operate between 9-12 volts. Would a 11.1 volt, 2800mah/40C battery be acceptable since Li-Po voltages start at 12.6? (Am I over thinking this stuff?)

QUESTION C: The Transmitter came with a 4 wire harness to connect my Go Pro Hero - does the transmitter reduce voltage for the camera to 5 volts? I'd prefer the camera to use it internal battery - cut a wire ??

I read that on occasion polarities come backwards - I will naturally check what is marked before applying power however are there any suggestions or tests I can consider to avoid smoking the project? I am aware to always have the antenna's connected. Thanks for reading this and taking a moment to help me.

Al

 

[gtranquilla]

Response to questions A and B....
Never try to power a device with a voltage that is higher or lower than the range specified. If voltage is too high, you will eventually burn out your electronics. I
f it is too low your electronics will only work at full charge briefly then move into the twilight zone where the processor gets confused and/or does multiple reboots in the air!!!
3S battery will be 3 x 3.7 volts = 11.1V which rises to 3 x 4.2v = 12.6v at full charge (risky for a 12 Volt rated system)
2S battery will be 2 x 3.7 volts = 7.4 v rising to 2 x 4.2 = 9.4 v at full charge
Quality electronic components will typically offer a wider acceptable voltage input range
If such broad acceptable voltage input range is not provided, simply add one or more voltage regulators between the battery(ies) and the load(s).
Some MR systems provide power regulators will offer two or more output ranges for a range of input battery voltage levels, will be extra light and energy efficient.

Hello everyone.. Just purchased a wireless FPV system from Hobby Wireless in Texas for my Flamewheel 450. I could use some advice on misc voltage issues. I plan on being away from electrical power and will be dependant on using individual Li-Po batteries to power the monitor, transmitter & reciever.

QUESTION A: The Reciever (R5800X) specs say it can operate between 8-12 volts, but cooler on 8 volts. Rather than an 11.1 volt Li-Po, should I use a 7.4 volt, 2200mah/25C battery??

QUESTION B: The Transmitter (TXV584) specs say it can operate between 9-12 volts. Would a 11.1 volt, 2800mah/40C battery be acceptable since Li-Po voltages start at 12.6? (Am I over thinking this stuff?)

QUESTION C: The Transmitter came with a 4 wire harness to connect my Go Pro Hero - does the transmitter reduce voltage for the camera to 5 volts? I'd prefer the camera to use it internal battery - cut a wire ??

I read that on occasion polarities come backwards - I will naturally check what is marked before applying power however are there any suggestions or tests I can consider to avoid smoking the project? I am aware to always have the antenna's connected. Thanks for reading this and taking a moment to help me.

Al