Revo questions

[T.S.Davis]

At the risk of being labelled a hater I'm going to re-enter the dangerous world of Revo battery discussion.

Okay start
here

This states that a Silver label 4s pack is 15.1v. Rendering it more voltage than is legal for a NAMBA 4s class.

Now try this one
here

That's a link to he data sheet on the Silver Label Lipo batteries. Page 2 claims 3.8v nominal voltage. Oky doky. Again, not legal per NAMBA 28 A.3.ii. 3.7volts nominal.

Here's another link for ya.
here

Take a close look at the photo provided in this for sale thread. Notice anything unusual? Can someone explain to me why the label on "brand new" cells does not correspond to the Revo sale page and/or their data sheets?

Which one is the lie? The label or the data sheet?

[Doby]

I was scratching my head yesterday trying to decide whether or not to give them a try because of all that crap..

The Revo website really requires an overhaul as its got to be the most confusing one ever for LiPos...to many "labels", pictures that don't match the descriptions...its a mess.

Maybe someone on here that knows the Revo guy can suggest he get his act (website) together.

I just hope they are good batteries.

[Doug Smock]

Not trying to start trouble but perhaps someone in the know can shed some light on a 70c packs with 65C inner labels. That question was never answered on the revolectrix thread.
RevoJohn ??

[/QUOTE]

[Luck as a Constant]

Not trying to start trouble but perhaps someone in the know can shed some light on a 70c packs with 65C inner labels. That question was never answered on the revolectrix thread.
RevoJohn ??

[/QUOTE]

Maybe the inner labels were printed incorrectly.

Who cares... If ya like em use em.


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[Luck as a Constant]

Besides, it's a difference of 5c.
It's not like that company that advertised there's at over 100c, then puffed in a ul-1.
That's what I would call an issue.
This? Not so much


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[Doug Smock]

Maybe the inner labels were printed incorrectly.

Who cares... If ya like em use em.


Sent from my iPhone using Tapatalk[/QUOTE]

I care, anyone that plans on making a purchase should care. The question was never answered.

Is it a difference of 5c? How do you know?

Do you have the answer? If not, please find something better to do with your time.

Thank you sir and have a nice day!

[keithbradley]

I'll shed some light on this guys:

Maybe using a sticker to determine whether a battery is legal or not was a bad idea.

It's been said more times than I can count that these lipos are technically 3.7v nominal just like everything else. The 3.8v label was just used as a designation on these cells because they CAN be charged higher than 4.2v.
This is not new information.

[Luck as a Constant]

Huh....
Ok then.
Guess I'm not welcome to comment....
Bye


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[kfxguy]

Not trying to start trouble but perhaps someone in the know can shed some light on a 70c packs with 65C inner labels. That question was never answered on the revolectrix thread.
RevoJohn ??

[/QUOTE]

What I read somewhere was (can't remember where) that the cells are originally 3.7v nominal cells but have a special coating applied to the chemicals in the cell that allow it to be charged safely to a higher voltage. When you add the extra voltage it adds the extra 500mah capacity. That's what I remember reading somewhere. I dunno.

[T.S.Davis]

Their data sheets say they are 3.8volt nominal. Their sale pages say they are 3.775 volts nominal. Their marketing plan is to sell them as "HV"...........but who cares really? Pay no attention to that man behind the curtain fellas.

The cells don't match their labels. Their labels don't match their data sheets or their marketing plan. Um.......they're 3.7v with fancy layering....................honest................ ........you can trust us.

With all the hints about integrity and accusations that Revos are being kept out of racing for selfish reasons........well this just pisses me off entirely.

By all means, ya like em, run em. I get that. Run what works. But don't bring them to a race. Not when others are running within the limitations of the rules. If you are going to race, read the rules of the organization under which you intend to race. Then purchase equipment based on your understanding of those rules. How any can know what Revo will sell them is an absolute mystery to me. Nobody knows with any certainty what these are. All we have to go on is the miss matched information from the distributor laced with some user testimonials.

[Doby]

I just hope they are decent batteries.....

[Doby]

[QUOTE=Doug Smock;620110]Not trying to start trouble but perhaps someone in the know can shed some light on a 70c packs with 65C inner labels. That question was never answered on the revolectrix thread.
RevoJohn ??

Doug, its a well know fact that every time you remove a layer of heat-shrink, you have to de-rate cells by 5C.

I would have thought you of all people would know that. You disappoint me.

[Doby]

Terry, the seller of the batteries I bought will be dropping them off at your workplace as he lives close by...please try not to burst into flames when you touch them

[tlandauer]

If I were a racer , I would care.
Now I am not a racer, but I care for different reasons. With all the attention that this brand has received, I wanted to give it a try too. I was quite surprised to see the packs on the F/S thread with a different voltage printed on its label. Not that labels mean everything, but when I spend $300, I like to know what I am getting at especially something that had made a positive impression from fellow users. If these cells are technically 3.7 cells but with the ability to handle higher than 4.2v charged, then the 15.1v on the label makes sense . The cells I saw yesterday was labeled at 14.8v as opposed to 15.1v on the site, so here is my question: which came first? The 14.8v label or the 15.1v label. I ask because the last time I checked their site I don't recall such discrepancy. Has the maker decided to use 14.8v to reduce confusion since most chargers in use today can only charge to 4.2v? Or has there been re-formulation of cell chemistry? Assuming the packs being sold yesterday are newer than what is photographed on the site.
Bottom line for me is this, if I am looking for something "extra" as these are being lauded, then upon seeing the label we saw yesterday, I don't think I will left click my mouse to "buy", not right away anyway. Label should not mean everything but it should not bring confusion/contradiction.
I apologize for the long paragraph, being concise is not within my capability...

[Doby]

I'll report on them when I run them...they will be going against the baseline batteries for my 4S setups, Turnigy 30C 5800 packs. Don't laugh, I've used these for years and they have been pretty bulletproof for me.

As the Revos are 4200, 70C =approx 290Amps and the Turnigys are 5800, 30C= approx 170amps, then in theory the Revos should outperform them. It will be interesting to see ....Revos about $80ish and the $Turnigy's around $52ish

As the Revos I just bought are new, and I just got some new Turnigys, then its close enough for me to be an apple to apple comparison. Although spec wise (if you can believe them) and dollar wise...the Revos had better come out on top as they are clearly supposed to be the bigger apple already.

Don't like my math or reasoning for comparisons, tough....do your own.


Also, do not take any of my comments as being anything negative about the seller I bought these from. He was just selling what he bought.