MaxAmps Race Edition Lipos

[ZippyBasher]

I thought that looked low, ~8c at best. But I am no Electrical guru, and havent played with a logger before( so what do I know)... but ~8c not getting full 6.5AH?

[Bondonutz]

EagleTree will be the real deal on what these packs can do, looking forward to see what Mr.Monster comes up with ?

[What's_nitro?]

I'm going to have to play Devil's advocate here and say that I'm not really impressed by that graph. A 50A (~7.7C) discharge on a battery that is labeled as "true 150C" is kind-of ridiculous. I would like to know more about the 150C rating and how you guys calculated it. Realisticly, a 195A discharge would do more to substantiate the rating of these packs. Being rated at 150C, and having a capacity of 6.5AH, 195A is only 20% of the "spike" current rating. I am assuming that the 150C is a "spike" rating...

I will post the other graphs and videos shortly. Here is the information on how we rate our cells. (added to the website shortly)

*Please note this is a cell rating, as you know Deans and Traxxas connectors can only handle around 70 amps continious.

Our 150C Packs
150C - Maximum burst rating without swelling or damaging the cell. This is a 1 second burst.
100C - Maximum sustained burst rating without swelling or damaging the cell. This is a 10 second burst.
75C - This is the continious rating that the cell can handle through the full discharge without swelling or damaging the cell.

[suicideneil]

Originally Posted by brandonwilcox

I will post the other graphs and videos shortly. Here is the information on how we rate our cells. (added to the website shortly)

*Please note this is a cell rating, as you know Deans and Traxxas connectors can only handle around 70 amps continious.

Our 150C Packs
150C - Maximum burst rating without swelling or damaging the cell. This is a 1 second burst.
100C - Maximum sustained burst rating without swelling or damaging the cell. This is a 10 second burst.
75C - This is the continious rating that the cell can handle through the full discharge without swelling or damaging the cell.

Why am I not suprized. So actually they are 75C cont / 150C burst @ 1 second. But wait, on the website it says:

Ultimate "Race Edition" 1/8 scale hard case pack. As you racers know, the most important factor for your batteries is voltage under load. This lipo pack boasts a 150C rating for all your amp hungry racing setups. It will maintain higher voltage under load than any other lipo battery pack we've tested. Plus, you'll have no problem getting plenty of runtime with an industry leading 6500mah of capacity.

ROAR APPROVAL PENDING
3-year 300-cycle guarantee
6500mah capacity
4-cell 14.8 volts
True 150C rating
5C fast charge capable
100% waterproof
Hard outer case
Built today with factory fresh cells
Built with genuine 12awg Deans Ultra wire
We add the connectors and balancing taps for you
139mm x 47mm x 51.5mm, 676g

No mention of continuous or burst ratings, just 'True 150C rating'; that implies 150C continuous without any other info being offered. You're the marketing rep right? Is it standard practice for MA to mislead customers with totally false ratings ( ofcourse it is, been around too long to know or think otherwise... ), or to simply leave out the rather important fact that that 150C rating is for a 1 second burst- god knows what the voltage droops to under that kind of load.

7.7C discharge graph is just too.

Funny thing about the starting dragster engines coment- I've seen A123 cell packs used to start motorbike dragster engines and those cells are only 2300mah 30/60C, terrible voltage drop underload yet they got the engine turning over just fine- right until the wiring on the bike started to smoke ( ignition was left off so the engine didnt actually start, just kept turning it over for several minutes ). I've also seen a normal 6s lipo start a 4x4 pickup engine by jumping it to the 12v batt which was flat; nothing short of a very impressive discharge graph with video or photographic proof of the readings from the discharge apparatus will change mine or many other people's opinions of MA.

[JERRY2KONE]

Truthfully that is pretty much what I expected they would show us. This is like advertising a brand new Corvett being able to do 200mph and then posting video of it tip toing through the park at 15mph with the top down. This is your example of what a 150c LiPo pack can do? Really? Are you kidding us? Marketing director?? I think you better pony up and really put these packs to the test if you expect to impress anyone in this market today.

MonsterMike please do some real world playtime with your packs and share some honest info with us (negative or positive). This is rediculous.

[slimthelineman]

So what happens when I put 150c to this pack and it blows up in my face? You gonna admit then it was overated? Pretty sad if that's what it would take. We asked for proof and it was said that it would be given and then we get this weak sauce graph of a less than 10c discharge? Pretty insulting if you ask me.

Originally Posted by slimthelineman

So what happens when I put 150c to this pack and it blows up in my face? You gonna admit then it was overated? Pretty sad if that's what it would take. We asked for proof and it was said that it would be given and then we get this weak sauce graph of a less than 10c discharge? Pretty insulting if you ask me.

I just got back from iHobby so please be patient with me as I upload all the graphs and videos we have.

I have a video of our maxamps.com batteries starting dragsters with 1000+ HP engines. So I think you will be impressed with their performance.

[ZippyBasher]

Originally Posted by brandonwilcox

75C - This is the continious rating that the cell can handle through the full discharge without swelling or damaging the cell. *Please note this is a cell rating, as you know Deans and Traxxas connectors can only handle around 70 amps continious.

PLEASE SHOW THIS, DIRECT SOLDER. No BS Plug excuse. EDIT: what can the 12awg wire handle?

Originally Posted by JERRY2KONE

MonsterMike please do some real world playtime with your packs and share some honest info with us (negative or positive). This is rediculous.

Originally Posted by brandonwilcox

I have a video of our maxamps.com batteries starting dragsters with 1000+ HP engines. So I think you will be impressed with their performance.

[reno911]

Originally Posted by brandonwilcox

I just got back from iHobby so please be patient with me as I upload all the graphs and videos we have.

I have a video of our maxamps.com batteries starting dragsters with 1000+ HP engines. So I think you will be impressed with their performance.

Calm down everyone let the man talk. He is most likely very aware of the shoes he must fit. I am waiting patiently for these graphs. Everyone else should do as well.

As I said earlier, his credentials should mean something at least, so following through with the promised graphs should be something he is capable of. I believe he will post up a graph of these batteries results. If not haze all you want.

On a personal note, Brandon, I buy the best I can afford, I have always wanted to give your company a chance. But evidence in this case will do you all the better. Especially with this forum.

On a side note, if the length of time taken is to prefab up a photoshopped graph of your packs with silly unrealistic numbers. Don't waste your time here, send it to RCDriver and RC Car Action for your latest add.

On another side note: 1000hp dragsters started with a lipo. Seems like your trying to elude the audience with that one. Give me the manufacturer of the starter and I will tell you how much currant it pulled from the battery. It doesn't take an outstanding amount to turn over a blown v8 than it does my 1.5l inline 4.

On a further side note: Get one of these packs to continuously crank a diesel in a big rig for a while than you have something.

[slimthelineman]

Good enough for me. We could have avoided all this hubub by just postin that in the first place. Why delay? Whatever, those specs seem halfway realistic but due to my past experience with ma and the usual reluctance to provide actual proof, I will believe it when I see it. Still a 75c constant is 487.5 amps. Let's see that graph. I will try to refrain from posting and wait patiently for these graphs and videos. As for the dragsters being started, uh yeah....

[mistercrash]

Mr. Wilcox, have you familiarized yourself with this site and it's people before coming here? This graph is ridiculous. Please stop insulting the intelligence of the well informed people in this forum and give them real proof, real data, real test results.

[whitrzac]

Originally Posted by mistercrash

Mr. Wilcox, have you familiarized yourself with this site and it's people before coming here? This graph is ridiculous. Please stop insulting the intelligence of the well informed people in this forum and give them real proof, real data, real test results.

NM, didn't see the paintshop pic...


edit: if that is a accurate graph, your only getting 4800mah out of a big @$$ brick of a pack... at only 1\20 of the C rating...


sooo...

6500-4800= 1700mah was lost as heat...


did the pack come off at 100*+???

[moneybagsfor-rc]

True DOES NOT mean "only true for 1 second." Only true for 1 second means sometimes true. Anyone with a college degree knows that implicitly and anyone who has taken an LSAT knows that explicitly.

Well, I am satisfied. This was just another trashy hoax. Thanks again Maxamps.

[E-Revonut]

If MA wants to clear their name they can send me two 2s packs, I can wire them in series and run them in my truggy, then run them in my brushless SC10, and a stock slash, all while hooked up to an Eagle tree. Of course Mike I'm sure can do the same thing. I won't bash on the batteries if they take the abuse, but I'm sure a real world test would prove that those ratings are bogus. If I could run them until they hit a 3.2v/cell cut off in my truggy and have them be under 110* I'd be happy