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4.8 and 6 volt Rx batteries

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Old 04-12-2004, 03:03 PM
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KingSalomon
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Default 4.8 and 6 volt Rx batteries

Can you put a 6-volt in a radio system that came with a 4.8? Ex. the Futaba Skysport 4ch. thanks -Dan
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Old 04-12-2004, 03:15 PM
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rsrogers
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Default RE: 4.8 and 6 volt Rx batteries

Yes. It might pay to use a 6 volt regulator as 6 volt batteries are well over that on a fresh charge.
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Old 04-12-2004, 08:45 PM
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Geistware
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Default RE: 4.8 and 6 volt Rx batteries

Yes, I have been using 6 volts from my second plane.
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Old 04-12-2004, 08:57 PM
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ooooo
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Default RE: 4.8 and 6 volt Rx batteries

Is there a reason for using a regulator with a six volt battery? If you are using 2 six volts batteries connected parallel, do you then use two regulators and why again? I was under the impression that the receiver can handle up to and above 20volts.

Just an enquiring mind. Not intended to tick anyone off.
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Old 04-12-2004, 09:52 PM
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irishcarbomb
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Default RE: 4.8 and 6 volt Rx batteries

I've heard they can handle up to 8volts. the only thing that i notice is that when the battery is fresh off the charger everything is a bit jittery b/c it is peaked at 7.1volts...but it goes away if i hold controls at max for a few secs.
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Old 04-13-2004, 08:31 PM
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Default RE: 4.8 and 6 volt Rx batteries

ORIGINAL: KingSalomon

Can you put a 6-volt in a radio system that came with a 4.8? Ex. the Futaba Skysport 4ch. thanks -Dan

The important thing to remember when you make the step up to 5 cells for your Rx battery, is to go for a larger capacity than you would normally use.
This is because more amps, (or milliamps in our case) are drawn when you up the voltage. I know that it wouldn't seem that this would be true, but ask anyone heavily into electric flight, and they will confirm it![sm=lol.gif]
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Old 04-15-2004, 06:11 AM
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Default RE: 4.8 and 6 volt Rx batteries

Modelflyer99 is correct.
Adding one more cell is increasing the voltage 25%. This will also increase the max current 25%. Use higher capacity cells.
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Old 04-15-2004, 07:26 AM
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Default RE: 4.8 and 6 volt Rx batteries

The above replies are correct, but what they aren't specifically saying is that you will get less flights from a 5-cell, 6 volt pack with the same capacity as a 4-cell, 4.8 volt pack. The power/energy used is related to current so you draw more energy from the battery to make your servos put out more torque at a faster speed. For this reason, you usually need a larger mil amp hour pack.

Also remember, your volt meter/battery checker will need to be re-set or changed for a 6-volt pack.
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Old 04-15-2004, 07:52 AM
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Default RE: 4.8 and 6 volt Rx batteries

ORIGINAL: Ed_Moorman

The above replies are correct, but what they aren't specifically saying is that you will get less flights from a 5-cell, 6 volt pack with the same capacity as a 4-cell, 4.8 volt pack. The power/energy used is related to current so you draw more energy from the battery to make your servos put out more torque at a faster speed. For this reason, you usually need a larger mil amp hour pack.

Also remember, your volt meter/battery checker will need to be re-set or changed for a 6-volt pack.
I knew that someone would be able to explain better than I can!!

Cheers Mate

Andy E.
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Old 04-19-2004, 11:20 AM
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Default RE: 4.8 and 6 volt Rx batteries

thanks guys... but do you think a regulator is necessary?
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Old 04-19-2004, 11:28 AM
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Default RE: 4.8 and 6 volt Rx batteries

ORIGINAL: KingSalomon

thanks guys... but do you think a regulator is necessary?
No, two of my planes run them just fine without. Also I'll never be able to go back to the 4.8. Too slow.
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Old 04-19-2004, 07:11 PM
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Default RE: 4.8 and 6 volt Rx batteries

What can handle 8 volts.
While the receiver can handle it, I would not try it with the servo.


ORIGINAL: uproar_15

I've heard they can handle up to 8volts. the only thing that i notice is that when the battery is fresh off the charger everything is a bit jittery b/c it is peaked at 7.1volts...but it goes away if i hold controls at max for a few secs.
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Old 04-19-2004, 08:31 PM
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Default RE: 4.8 and 6 volt Rx batteries

Dan,

A regulator is a necessary item if you are running two batteries. The reason is if you are running two batery packs and one goes dead it can pull hte other battery pack down in no time. With regulators installed one battery cannot do any damage to the other.
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