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HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › Anyone Heard of these new Lipos Update # 4 Video Added
04-17-2007 08:39 PM  13 years ago
Topic Vote0Post 1
Air_Alpheus

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Mineral,Va

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Anyone Heard of these new Lipos Update # 4 Video Added
This is what they are saying: http://www.airthunder.com

25C, Low Operating Temperature, No Need for Low-Voltage Cut-Off Device, Never Deform, Lower Price. These are the AirThunder Differences!!!
High energy density
High voltage - 7.4V, 11.1V, 14.8V, 22.2V, 37V available
High capacity - 2200 to 5000 mAh
High discharge rate - 25C
High burst discharge amperage - 5 to 10 seconds at 40C
No memory effect
Low internal impedance
Low-voltage safe; no cut-off voltage limit; no more need to time your flight

Withstand over-discharging
No deformation after over-discharge
Low operating temperature - < 50 to 60°C
Light Weight - 160 to 280g
Long life cycle – 80 to 100 times at 20C discharge rate
Superior quality - manufactured in an ISO 9001 :2000 and UL certified facility
All our batteries come with wire gauge(Voltage port) and balance connector ready.
Costs 18 to 25% less than comparable products.
Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-17-2007 08:53 PM  13 years ago
bstock

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Easton, MD.

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Sounds like A123 batts.

URL?
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04-17-2007 09:11 PM  13 years ago
raptor50luvver

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Dorset UK

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More info please
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04-17-2007 09:19 PM  13 years ago
Thomashome

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West Sussex UK

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http://www.airthunder.com/

They say they are LiPos, you hear so many claims from so many manufactures that don't hold up, though I'm not sure 80 cycles is what I'd consider a long life.
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04-17-2007 10:00 PM  13 years ago
Air_Alpheus

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Mineral,Va

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Im gonna give them a call Ill let ya know.Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-17-2007 10:10 PM  13 years ago
3dmon

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Sebastian, Florida USA

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I almost bought one to try it out, but they seem heavy.

A 4s pack is 3.6 oz's heavier than a TP 2000 4s pack.

I figured I'd wait till others used them.
Fly 3D Mon!
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04-17-2007 11:09 PM  13 years ago
Air_Alpheus

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I wrote them an email and they got back to me within 15 minutes.

Here is what I wrote:

I'm liking what I see with your products , however 80 to 100 cycles
> is not a long life. I have over 180 cycles on my prolites and they are
> still running strong. What's the story on the lifetime on these
> batteries? Thanks
>

Here is their reply:

Dear Bruce,

Thanks for bringing this up. We will need to modify that passage on our website. If you scroll down the page, you will see a graphic of battery capacity vs discharge cycle. What we meant to say is that the battery still retain 90% of the original capacity even after 100 cycles. This is above the industrial average.

Best Regards,
Barry H.
AirThunder
Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-17-2007 11:46 PM  13 years ago
OUCaptain

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Heli Addict Rehab Center

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I still want a bit more detail on the low voltage thing. Just how far down can you take them and still take a charge with no damage. I'll e-mail em tonight unless someone else already has."Human beings are viruses with shoes"
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04-17-2007 11:53 PM  13 years ago
Air_Alpheus

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Mineral,Va

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You can discharge them down to 2 volts per cell. I dont think the 450 would even fly at that voltage.Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-18-2007 04:06 AM  13 years ago
Air_Alpheus

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Mineral,Va

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They are sending me a 3s 2200 mah pack for me to test. I will post all of my results as soon as I get them. What all tests would you guys like to see other than the obvious?Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-18-2007 04:09 AM  13 years ago
onebigjunker

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Wellsville, Ks

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see if you can make it burn(LOL)work hard, play even harder!!!!
Team Empire Hobby/GAUI USA
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04-18-2007 04:12 AM  13 years ago
MDiver

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Edmonton, Alberta - Canada

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Can you do some crash resistance testing.
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04-18-2007 05:40 AM  13 years ago
Ace Dude

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USA

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There's a 3S 2100 review in the latest issue of QuiteFlyer magazine. I wouldn't use no name brand batteries, but that's me.  
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04-18-2007 05:59 AM  13 years ago
Sceaduflyer

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Westbrook, ME

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Air_Alpheus,

What is your setup on your Rex? I just want kind of a guage to go buy. I have a new V2 with the XL motor and if these batteries are all that they're said to be, then I might just have to get a couple.

Ryan
It wasn't me, it was my thumbs!
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04-18-2007 06:17 AM  13 years ago
Air_Alpheus

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Mineral,Va

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Se v2 430 L silver caps, CC35 esc
2007 Se v2 430 xl stock esc

I will be using different gear combos and blade sizes. The cool thing about these cells are the price and you dont have to worry about over discharging them...
Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-18-2007 06:21 AM  13 years ago
Air_Alpheus

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Mineral,Va

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There were alot of batteries out there that started out as a no name brand battery until people stepped up to the plate to test them out and see if they can become a named brand battery.There is nothing wrong with going out on your own for awhile and trying new things and not doing what everyone else is doing...Its What I dont Say You Should Be Worried About...
Bruce A Aunkst III
Team AirThunder
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04-18-2007 09:49 AM  13 years ago
KevinR

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Vancouver, BC Canada

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So does this mean you can use more than 80% of their stated capacity without worrying about getting less cycles out of them?
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04-18-2007 10:11 AM  13 years ago
falcon

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UK

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So does this mean you can use more than 80% of their stated capacity without worrying about getting less cycles out of them
Thats what they say on the web site
www.m0kwr.com
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04-18-2007 12:18 PM  13 years ago
Ace Dude

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USA

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There is nothing wrong with going out on your own for awhile and trying new things and not doing what everyone else is doing...
There's nothing wrong at all with that. The more time and money you have the more you can do that.

Lots of folks have already done that and many have concluded you get what you pay for. The leading brands have come out on top during testing.

Any reputable reseller should be able to provide discharge curves for batteries. The test in QuietFlyer was enlightening.
  
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04-18-2007 02:35 PM  13 years ago
Zephan

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Lompoc, CA

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AceDude,

I skimmed through the previews of March and April's QuietFlyer at their online site and did not see the article that you mention. What batteries did they test, what were the tests and summary of the results? I am trying out some DN 2150, 20C's and was wondering if they were in this review.

http://www.readyheli.com/DN_Power_3...po_combo20c.htm

Trex600N & Trex450SE... DAMN! Another radio glitch!
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