Rx power

[bangka]

hi! can i use a 6-cell battery pack to power my receiver instead of the 4 AA batteries? i dont know if this is possible because the 4 AA is only 6volts compared to 7.2volts by nicad battery pack. this battery pack is same as used in electric motors. weight is not an issue so its ok if its bigger.
thanks!
ernest

[quicklimegirl]

Sure! Ive been making AA 6-cell packs for RX for a long time. Servos perfomance much better

[Hydro Junkie]

Now, let me go to the flip side of using higher voltages. Some servos can't handle more than 4.8 volts, while others require 6 volts, no more no less. Using 7.2 volts on either of these will fry them rather quickly. This is especially true for the new digital servos. Also, using 7.2 volts voids your warranty, shortens receiver and servo life dramatically and DOESN'T give that much better performaance over warranty legal 6 volts. I would either get or make a 5 cell 6 volt pack with some 3300's and save your radio gear, but check on the servo requirements first

[bangka]

i think you're right hydro, i have check with the manual. the rx can handle up to 8.4volts but i think the servo can only up to 6 volts. so i guess its better to stick with 4 cell AA nicds
thanks

[blizard05]

YES you can,they do with rc cars and trucks,RX has BEC limits out put volts, look at radio manual

[Hydro Junkie]

Which brand of radio are you looking at blizard05? My Futaba 9C Super says NOT to go over 6 volts or the receiver and servos will be damaged

[blizard05]

Have 13 radios, Fatuba,Tower,Hitec,all can take up to 8.4 volts,wowever would not use more than 7.2,you will not gain any thing because BEC limits out put to 6 volts,to get more volts to rudder use Y harnes .bat,servo, plug into rudder ch,not bat slot

[Hydro Junkie]

Uh, Blizzard05, are you talking receivers or electronic speed controls? A receiver wouldn't need a BATTERY ELIMINATOR CIRCUIT, as it's normally powered from the BEC in the ESC of an electric powered vehicle or it's own battery pack. A voltage regulator is what would limit the voltage to the servos, which if you look closely at a receivers schematics, isn't in a receiver.

[Chris LaPanse]

No you shouldn't. I believe that Hitec has some new servos that are designed to take 7+v, but unless you have those, then don't try it. 6v (5 cells) is the best performance without frying your servos.