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Question for battery guru about 5 cell NMHI batteries!

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Question for battery guru about 5 cell NMHI batteries!

Old 04-15-2011, 09:47 AM
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Default Question for battery guru about 5 cell NMHI batteries!


Hello,

I keep hearing all kind of versions on this.

When freshly charged 5 cell NMHI batteries show over 6V, about 7V, (Hight torque HI-Tech servos are rated at 6V) Would this 5 cell NMHI extra voltage damage servos without regulators?

Some say no need for regulator complications, Servo makers say this extra voltage won't hurt anything. UNLESS you go to 7.2 LIPO, then you would have to use regulators.

Thanks!
Old 04-15-2011, 10:07 AM
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Default RE: Question for battery guru about 5 cell NMHI batteries!

The servo manufacturers have more knowledge about their sevos than anyone else. Dan.
Old 04-15-2011, 11:42 AM
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Default RE: Question for battery guru about 5 cell NMHI batteries!


ORIGINAL: allmetal plane


Hello,

I keep hearing all kind of versions on this.

When freshly charged 5 cell NMHI batteries show over 6V, about 7V, (Hight torque HI-Tech servos are rated at 6V) Would this 5 cell NMHI extra voltage damage servos without regulators?

Some say no need for regulator complications, Servo makers say this extra voltage won't hurt anything. UNLESS you go to 7.2 LIPO, then you would have to use regulators.

Thanks!
A 5 cell pack will quickly drop to about 6.6-6.7 or so once a load is on it.
I've used 5 cell packs for almost 20 years,, the lipos top out over 8.4 volts,, that's too much, too much for most recievers too, around 7 volts is fine for RXs and servos that are rated @ 6volt.

Also
You find some older servos that are not rated for 6volts will get the gitters on a 5 cell pack,, so keep an eye on things
Old 04-15-2011, 12:08 PM
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Default RE: Question for battery guru about 5 cell NMHI batteries!

Manufacturers rate servos at 4.8v and 6v for the most part.

What they mean is fully charged 4 cell pack, and fully charged 5 cell pack
Old 04-15-2011, 01:13 PM
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Default RE: Question for battery guru about 5 cell NMHI batteries!

I run A123's. freshy charged will be over 7 volts, no problems with servos or recievers ever

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