HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Apr 27, 2012, 06:57 PM
brandonwilcox's Avatar
CT
Joined Sep 2008
71 Posts
Cool
New! MaxAmps.com Internal Plug low-resistance packs

Spokane, WA – MaxAmps.com announces the new “internal plug” option for the Race Edition 6500 7.4v 150c and the 5450 7.4v 120c LiPo packs. These packs offer the best of both worlds. You get the lower resistance and higher performance of a single connection between the speed control and the battery along with the clean look of built in connectors.

Unlike the other bullet style connectors, there is no chance of reversing polarity since both the balancer and main plugs are keyed. They are specifically designed for vehicles with longer battery trays like the Traxxas Slash 4x4. The balancer tap is also built into the pack and offers a very clean look, both inside and outside of your vehicle.

These LiPo packs offer a true 150c/120c discharge rating and 5c charge rating. All MaxAmps.com packs are built to order today in Spokane, WA with your choice of plugs, colors, and balance taps. They come with grade-A cells and a lifetime warranty. Check them out now at www.MaxAmps.com


brandonwilcox is offline Find More Posts by brandonwilcox
Site Sponsor
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 27, 2012, 09:38 PM
RC Helicopter Pilot
TheWoodCrafter's Avatar
United States, CA, Westminster
Joined Mar 2010
1,696 Posts
I have said this before and until I see some proof I will keep on saying it --

150C discharge rate is a bold face Lie.

Maxamps has been advertising 150C batteries for a while.

I really think this is exactly why the battery industry gets a bad rap for inflated discharge rates.
TheWoodCrafter is offline Find More Posts by TheWoodCrafter
Reply With Quote
Old Apr 30, 2012, 01:19 PM
brandonwilcox's Avatar
CT
Joined Sep 2008
71 Posts
The discharge rating is not a lie. Our Race Edition line are 150C packs. You can see many happy customers review below:

http://www.maxamps.com/Lipo-6500HC-74-Pack.htm
brandonwilcox is offline Find More Posts by brandonwilcox
Site Sponsor
Reply With Quote
Old Apr 30, 2012, 01:37 PM
Registered User
So. Cal.
Joined Oct 2004
7,449 Posts
Ok, calling your bluff here.

If "True 150C" is not simply extreme manufacturer hyperbole, what exactly does it mean? e.g. - Please post a link to the testing that was performed to justify such or at least a semi-technical description of the testing. Heck, I would even be satisfied with a layman's definition of "True 150C".

As of now, industry recognized experts consider this rating to be an absolute joke.

While pointing to 'reviews from happy customers' lends some credibility to the quality of the product, it does absolutely nothing to justify the obviously ridiculous rating.

Mark
mrforsyth is online now Find More Posts by mrforsyth
RCG Plus Member
Reply With Quote
Old Apr 30, 2012, 01:52 PM
Since 1952
Canada, AB, Edmonton
Joined Oct 2004
1,191 Posts
Or even just tell us how you manage to get 975 amps through 12 ga wire. Even if it is "Genuine Deans" wire.

Maybe you've been in marketing so long you've actually started to believe your own BS.
Harry D is offline Find More Posts by Harry D
Reply With Quote
Old Apr 30, 2012, 02:41 PM
Southern Pride
everydayflyer's Avatar
Haralson County GA. USA
Joined Oct 2004
34,363 Posts
60 min in an hour / 150C rate =0.4 min or 24 seconds. Who honestly believes a LiPoly can deliver 90% or so of its' rated capcity in 24 seconds. while maintaining any decent per cell voltage?


Last LiPolys I tested from a mostly car / truck vendor were SMC and the looked great for 30 flights but non made it to 100 cycles. Typical of many we are the greatest Lipolys ever made. Only available from us as we are very close friend on the manufacturing plants owners.


Quote:
Race Edition 6500 7.4v 150c and the 5450 7.4v 120c LiPo packs
Please post a link to a 6.5 Ah X 150 = 975 amps. and / or a 5.45Ah X 120= 654 A discharge graph.

Who manufactures a ESC that can handle 600 to 1,000 maps. for more than 2 seconds and if they exist how much do they cost?

Time based CBA III discharge graph showing discharge times for aprox. 5,10,15,20 and 25C rate discharges.

http://www.rcgroups.com/forums/attac...9&d=1256827460

Charles
everydayflyer is offline Find More Posts by everydayflyer
Last edited by everydayflyer; Apr 30, 2012 at 03:13 PM.
Reply With Quote
Old Apr 30, 2012, 03:17 PM
Registered User
TreeDiver's Avatar
Echt, Netherlands
Joined Aug 2003
3,000 Posts
Quote:
Originally Posted by brandonwilcox View Post
The discharge rating is not a lie. Our Race Edition line are 150C packs. You can see many happy customers review below:

http://www.maxamps.com/Lipo-6500HC-74-Pack.htm
maybe they will pop up here:

http://www.rcgroups.com/forums/showthread.php?t=1578001

fact is that most brands are incorrect about their C rating
but of course, one has to be 'king' on this subject

b.t.w. maybe your packs are good, but 150C rating... unreal

TreeDiver
TreeDiver is offline Find More Posts by TreeDiver
Reply With Quote
Old Apr 30, 2012, 03:57 PM
KK4TYF /Baron Von Nick
Endlesslag's Avatar
USA, VA, Spotsylvania
Joined Jan 2011
3,842 Posts
It's gotta be burst...cars, esp. 1/8 scale truggies/monster trucks can have a very high initial startup current. my friend's truggy's esc has a max burst current of 2000 amps for like .1 seconds.
Endlesslag is offline Find More Posts by Endlesslag
Reply With Quote
Old Apr 30, 2012, 04:24 PM
Registered User
Rugby, UK
Joined Feb 2007
812 Posts
Quote:
Originally Posted by Harry D View Post
Or even just tell us how you manage to get 975 amps through 12 ga wire. Even if it is "Genuine Deans" wire.
A simple calculation shows that if the leads are just over 4" long, the heat dissipated in them would be half a Kilowatt!

Similarly, if the pack is to survive, the cell IR needs to be less than about 50micro-ohms, ie 0.05 milliohms. Is it?

Wayne
Wayne Giles is online now Find More Posts by Wayne Giles
Reply With Quote
Old Apr 30, 2012, 11:17 PM
RC Helicopter Pilot
TheWoodCrafter's Avatar
United States, CA, Westminster
Joined Mar 2010
1,696 Posts
WOW Brandonwilcox,

I think you are toast.

Or at least you were tar and feathered.
TheWoodCrafter is offline Find More Posts by TheWoodCrafter
Reply With Quote
Old May 01, 2012, 01:06 AM
Registered User
Melbourne
Joined Aug 2010
449 Posts
He does the same on every forum, never hangs round long enough to answer questions

Too funny

Cheers
crusey_aus is offline Find More Posts by crusey_aus
Reply With Quote
Old May 01, 2012, 02:55 PM
brandonwilcox's Avatar
CT
Joined Sep 2008
71 Posts
150c is the cell rating. No plug on the market can that much current.
brandonwilcox is offline Find More Posts by brandonwilcox
Site Sponsor
Reply With Quote
Old May 01, 2012, 03:09 PM
Registered User
So. Cal.
Joined Oct 2004
7,449 Posts
Quote:
Originally Posted by brandonwilcox View Post
150c is the cell rating. No plug on the market can that much current.
Ok, it's the cell rating. Fine. Now does this mean that the cell can handle a continuous 150C current draw until depleted?

http://www.rcgroups.com/forums/showp...92&postcount=4

Mark
mrforsyth is online now Find More Posts by mrforsyth
RCG Plus Member
Reply With Quote
Old May 01, 2012, 03:19 PM
Registered User
Rugby, UK
Joined Feb 2007
812 Posts
Quote:
Originally Posted by brandonwilcox View Post
150c is the cell rating. No plug on the market can that much current.
Again:

"A simple calculation shows that if the leads are just over 4" long, the heat dissipated in them would be half a Kilowatt!

Similarly, if the pack is to survive, the cell IR needs to be less than about 50micro-ohms, ie 0.05 milliohms. Is it?"

Wayne
Wayne Giles is online now Find More Posts by Wayne Giles
Reply With Quote
Old May 01, 2012, 04:05 PM
Since 1952
Canada, AB, Edmonton
Joined Oct 2004
1,191 Posts
Mr. Wilcox:

You yourself write, in Post #1 of this thread, "These LiPo packs offer a true 150c/120c discharge rating..."

You are fortunate that ours is not a mainstream activity. If it were, your outfit would have been shut down long ago for misleading advertising, false statements and claims, and many other such things.

It would be much appreciated by many here if you would confine your BS to those certain places where your target audience is more likely to lack the knowledge, information, and common sense to recognize your company and products for what they are. Here, you just come across as silly.
Harry D is offline Find More Posts by Harry D
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
New Product G.T.POWER charger built-in lithium battery internal resistance testing system GTPOWERlisa Batteries and Chargers 4 Oct 07, 2012 11:46 AM
Cool New! MaxAmps.com LiPo Battery Tester and Low Voltage Alarm brandonwilcox Batteries and Chargers 9 May 14, 2012 10:56 PM
Cool New! MaxAmps.com 9000mah 3-cell LiPo Pair for Traxxas XO-1 brandonwilcox Batteries and Chargers 3 Apr 25, 2012 11:14 PM
Discussion Measuring internal resistance CNY_Dave Batteries and Chargers 6 Sep 29, 2011 08:24 AM
Idea Simple LiPo Load Tester, Internal Resistance Measurement ExperimentalAir Batteries and Chargers 3 Sep 18, 2011 07:01 AM