Zippy 5000 mah 25C battery

[Kinens]

My LHS was out of 6S batteries and after 10 days they came in. What they ordered are zippy 5000MAH 25C batteries. I explained to them the 550 calls out 30C and was told it won't be noticeable.

I have not flown the Heli yet as I have been waiting on the batteries.

Are these going to work ok?


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[megawhacker]

Does your LHS want more than $50 each for those batteries?

I will go out on a limb and suggest that at the price your LHS is probably selling those batteries for there are way better choices for the 550X.

[Kinens]

Charged $84 each. Never been a fan of zippy batteries. I am more concerned about the 25C versus 30C


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[puppydog_taz]

I would return them. They are a junk battery and a poor C rating. Unless you just fly around scale at low head speeds, you will be disappointed with them for sure!

[Kinens]

What do you all recommend?


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[puppydog_taz]

Many here recommend these Glaciers!
http://www.buddyrc.com/glacier-45c-5000mah-6s1p.html
I have them, but I'm not happy with the swelling I am getting.
My money from here on out will be spent on Pulse Ultras.
I think you should use 45C minimum as well! Just my opinion.

[Kinens]

Any reason you use the 45C over the 35C?



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[puppydog_taz]

Preference and from what I have heard from heli pilots at the few events I have been to. The higher the C rating, the faster a battery can discharge safely. I have had several 30-35 C batteries come down pretty hot after some hard flights.

[Kinens]

Thanks for all the advice. It will save me some headaches for sure


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[RichKnapp]

I have a Zippy 5000mAh 40C and I wouldn't go any lower with a Zippy. The 40C 5000's get a ok rating , but the other 5000mAh's get a crappy review. Why? I do not now.

Mine is doing good.

[crashcopterman]

25C? Do they still make those?

5 amp x 25=125 amps sustained. That's not very much considering I've logged flights at 90-110 amps sustained and 160-170 spikes, I think that battery wouldn't be very 'Zippy' getting beat up like that, if it would even perform. I have some Gens Ace 45C that perform great. 45 x 5A=225 amps. You get what you pay for!

Steve

[Kinens]

Ended up getting pulse ultra power series 35C. They were out of stock of the 45C.

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[crashcopterman]

That's fine, you're good to go now.

[gmiller0]

I have one 45C 5000mah and one 35C 5000mah and can't tell the difference.... Packs end up being the exact same temp after similar flights.... 35C is fine... And according to David from Progressive RC in his interview on the podcast for RcHelination episode #127, ANY claims of anything above 35C are not factual and we pay for the label..... Listen to that podcast starting around 1:30.... Teaches you a lot

[crashcopterman]

Go to Vegas and tell Thunder Power that! Let us know how you make out.

Steve

[gmiller0]

That's a good idea dude.... I would LOVE to know why my 70C 2250mah came down warmer than my e-Flite 30C battery and after about (1) season of flying the internal resistance of the TP was 12.3 per cell and my e-Flite was 7.6 per cell.... I called them around July and they said it must be the way I'm charging it.... LMAO I don't think charging at 2-3C is bad on an iCharger... Lol

There is no way in hell their batteries are 70C... That would mean I could discharge 80% of the battery at 350 amps continuous without the battery reaching 130 to 140°F for multiple cycles.... Ha ha ha that s*** would explode!!!! My buddy has a speed Heli and after drawing 240+ continuous amps for a run, that 14S pack was over 100° and the second run was over 125° and those are 4-5 second runs.... A 70C rated battery should be able to handle possibly 1 minute at that discharge rate and not hit much higher than that.... (And we ALL know that's not possible)... LOL

I want third-party companies to start showing YouTube videos of them testing different battery company's for (C) ratings That would TOTALLY send a shockwave through the industry in respect to "claimed (C) rating" claims and BS....

[Nytro97]

Originally Posted by Kinens

Ended up getting pulse ultra power series 35C. They were out of stock of the 45C.

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Those are what I run and they are great.

[crashcopterman]

I've sold automotive and industrial batteries for 25+ years, ugh I'm getting old. Lead acid, AGM, they all vary in output from mild to wild. If you think we do not have the technology or capability to make a lithium battery to have higher outputs then you are rather closed minded. Companies would be crazy to advertise impossibly high output packs especially in the U.S. where people practically initiate legal action when the weather man is wrong. That would be very stupid and risky. Now don't get in a huff with me, take your gripe to thunder power or whomever, but my 45c Gens Ace absolutely stomp my 25c Haiyins.

Steve

[gmiller0]

I agree dude I didn't mean to sound huffy or come off like that The (C) rating absolutely makes a difference and better batteries are DEFINATELY noticeable but we all know there is no standard for (C) rating and the only way for us to determine what works best is we try out packs and listen to what others are using, especially the pros and sponsored pilots. There is literally no way for anyone without specific testing equipment to prove that a company's claimed (C) rating is true... Nor are there really any concrete standards to "define" (C) ratings. I love my Pulse batteries and my 35C packs come down cooler then my 30C eflites, as IR is about the same and I put back in about the same amount of maH's, so they are better from what I can tell..... But I still can't "prove" what the C rating is....

[Nytro97]

The ratings are probably a little like the small engine (lawn and garden) horse power ratings a few years ago when there was a class action law suite against many of the engine manufactures.They were claiming a horse power with nothing to back it up. Now you find they don't list HP in many cases, just engine torque or displacement. It is very easy to put a sticker on that may not be accurate.