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Can a 6.0 5cell function as a 4.8 4cell?

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Can a 6.0 5cell function as a 4.8 4cell?

Old 02-26-2020, 04:55 AM
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voyager_663rd
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Default Can a 6.0 5cell function as a 4.8 4cell?

Getting back into the hobby after a 5 yr hiatus. First thing I started to do was check status of my NiMH batteries. I know that "expected" life is 3-4 years but I've got some that are 15 yr and still do a full cycle on my cycler.

However, one 5 cell pack has issues. It was always used as a Rx pack on a 60 size bird with 4 std servos.

So, it's a 5 cell 2700mah sanyo nimh.

1)On the load multimeter, using the 5 cell selection, it hardly registers. On the 4 cell selection, shows fully charged.
2)when I cycle it, it puts in 2000mah . A second time--2000mah.

So my question is: can this function reliably as a 4cell rx pack? Or just toss it and replace? It would still be in the 60size Chip with 4 std servos.

I've included a poll but I'd prefer "explanations".
Old 02-26-2020, 05:56 AM
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BarracudaHockey
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How much is the model you're flying it worth, versus the cost of a new battery?

If it were me it would be relegated to bench setup duty
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Old 02-26-2020, 05:59 AM
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Ya, penny-wise pound foolish had occured to me.

In retrospect, should relegate it to flying coroplast. BUT that would pose a safety issue if/when it does fail.

Not going to use. Tks for confirming for me.

Last edited by voyager_663rd; 02-26-2020 at 06:02 AM.
Old 03-05-2020, 03:23 PM
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I would quickly toss that battery in the recycle bin.
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Old 03-05-2020, 03:47 PM
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Yes, I have come to that conclusion.

Seeing as I have to replace several nimh, I'm doing my research on A123/life PLUS a new charger. Unfortunate, but new(er) battery technology requires newer charging technology (I can only do up to lipo).

No point in going back to nimh at this point as I"m getting back into the hobby again.

Thanks for your input.

Old 03-12-2020, 07:08 PM
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Originally Posted by voyager_663rd View Post
Yes, I have come to that conclusion.

Seeing as I have to replace several nimh, I'm doing my research on A123/life PLUS a new charger. Unfortunate, but new(er) battery technology requires newer charging technology (I can only do up to lipo).

No point in going back to nimh at this point as I"m getting back into the hobby again.

Thanks for your input.
A123 Batteries are excellent technology. Good choice.
Old 03-14-2020, 07:59 PM
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LiFe requiring their own charger is not big deal to me. I bought a LiFe/Lipo charger from HobbyKing for $13 that is perfect for doing receiver batteries. It charges directly through the balance port, is AC/DC, and is compact. I'm going to buy a second one next time I place an order just to make the logistics easier when getting ready to go to the flying field.
Old 03-15-2020, 06:17 AM
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The original question - can it be reused reliably? NO.
If you were industrious, you could check the voltage of each individual cell under load. If lucky, you'll find just one that was significantly lower than the other 4. Then just cut out the bad one, rewire, and use the remaining. But...I'd never trust that pack for flight, and would relegate it to use in bench testing only, a kids toy, or something like that.
If unlucky, more than one tests bad....
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Old 03-16-2020, 07:33 AM
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Originally Posted by jester_s1 View Post
LiFe requiring their own charger is not big deal to me. I bought a LiFe/Lipo charger from HobbyKing for $13 that is perfect for doing receiver batteries. It charges directly through the balance port, is AC/DC, and is compact. I'm going to buy a second one next time I place an order just to make the logistics easier when getting ready to go to the flying field.
Ordinarily, I would consider that but what with the "beer"virus and shipping shutdowns, I hesitate for now. Read of others who've ordered stuff from HK recently and gotten a "shipping delayed" message in regards to their order. Card has been charged though.
Old 03-17-2020, 04:33 PM
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There's always Ebay. Plenty of US sellers.
Old 03-25-2020, 08:59 AM
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Closing this discussion: I am fully committed to (8) new A123 batteries for my fleet (plus two new 4.8 metals) for my 2 gassers plus a new charger all of which arrived yesterday and in the process of learning it's workings while charging these batts.

Thanks all for your input.

PS B4 questions arise, I thought I would elaborate:

gassers-orig used a 4.8 for ign and paired 6.0 for the servos. With this power change, I waffled between sticking with a 4.8 and 2 2S for power and going with an IBEC and 2 2S. As my ignitions are "older", they could not handle the 6.6V. AND as I didn't want to really re-balance because of the reduced weight, I stuck with the new metal for ign.

Other 123's are singles to go into my glow.

Happy flying (if our field ever opens--soggy driveway so cars are prohibited for the present).

Last edited by voyager_663rd; 03-25-2020 at 09:11 AM.

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