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-   -   Ni-cd = ni-mh? (https://www.rcuniverse.com/forum/questions-answers-154/10005977-ni-cd-%3D-ni-mh.html)

paul cov 09-16-2010 04:58 AM

Ni-cd = ni-mh?
Hi Guys, quick question, am running 6v 2600 mah Ni-mh power supply on my warbird 90 size but have just noticed that 4 of my 8 servos says Ni-cd use only?, will i have problems other than servo running slightly slower than quoted 0.16 sec/60 degrees, not electrician so simple explanation plz, thanks.

David Bathe 09-16-2010 06:38 AM

RE: Ni-cd = ni-mh?
Just enjoy.

paul cov 09-16-2010 07:22 AM

RE: Ni-cd = ni-mh?
Yes David i will be doing that, but dont want it to be short lived!.

RCVFR 09-16-2010 07:48 AM

RE: Ni-cd = ni-mh?
I think your servos won't know if they are being fed by NiCad or NmH, so long as the voltage is correct. I'm guessing they are cautioning against use of some of the more exotic batteries around. I have been using NmH on my servos for years with no ill effect.

BarracudaHockey 09-16-2010 08:28 AM

RE: Ni-cd = ni-mh?
First, to the servos 6v is 6v, no matter if it gets it from a nicad, nimh, or regulated lithium so the torque and speed will be the same for a given voltage.

Now, about that NiCad only warning. Back in the day NiMH batteries had a higher internal resistance. That means that under load the voltage would drop off, sometimes to dangerous levels (especially with 4 cell packs that were easier to drag the receiver down to reset voltage).

Modern NiMH cells don't suffer that issue.

So fly happy :)

paul cov 09-16-2010 07:44 PM

RE: Ni-cd = ni-mh?
Excellent!, thanks guys.

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