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2S 7.4v LiPo OK For RX and Digital Servos?

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Old 04-07-2013, 03:41 PM
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JCINTEXAS
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Default 2S 7.4v LiPo OK For RX and Digital Servos?

Hi Bax,
Is it OK to use a 2S 7.4v LiPo battery for the receiver and digital servos (not the High Voltage servos)? Is it necessary to use a voltage regulator for this?
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JC

I don't always fly R/C...but when I do I fly FASST. Fly well my friends.
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Old 04-09-2013, 08:11 AM
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Bax
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Default RE: 2S 7.4v LiPo OK For RX and Digital Servos?

Check the servo's specs. If the servo is OK for 6V, then a 2S Lithium battery pack won't hurt it.
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Old 04-11-2013, 09:51 PM
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Default RE: 2S 7.4v LiPo OK For RX and Digital Servos?

I would like to make a comment here. When a servo is specified for 6 volts nominal power supply (5 cells NIMH or NiCad) the only type of lithium based chemistry batteries that may be used, without a regulator, is 2S LiFePO battery with a voltage range similar to a 5 Cells NIMH battery pack.
A 2S LiPO battery has 7.4 volts nominal voltage (higher than maximun voltage of a fresh-charged 5 cells NIMH) peaking at 8.4 volts when fresh-charged. That means if somone uses 2S LiPO without a regulator to power supply a non HV servo, the servo is going to get fried very soon. Only HV servos may be power supplied with a 2S LiPO.
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