Maxxamps batt always out of balance

[BrianG]

That's getting close to bashing them. I was thinking more along the lines or arguments comparing similar performance packs vs the cost, and graphs showing their relative performance (voltage under load, temps, end of cycle mAh, etc). If you provide the facts in a clearly understood form, you don't need to say another word.

[TexasSP]

So it's okay for me to post the fact that all maxamps packs I have owned have puffed. I got in trouble on the TRX forum for postin something similar about a different RC company but basically in the same manner.

After going to enerland packs it's really hard to go back to anything else. Although the zippy pack I picked up from linc is very nice. Flightpower to me is by far the top assembler of the enerland packs and you pay for it. This really doesn't bother me though as I can usually get a good enough member discount from tower to offset the cost.

I have a pair of 3s FP evolite that just perform circles around the MA packs I have owned and the FP's actually cost me less than similar MA packs and are stressed much more.

[BrianG]

Yes, that's fine.

I don't want to become a forum nazi, but these types of threads can get out of hand with flame posts, and want to nip it in the bid before it gets there.

[Metallover]

I'm with big BG. I'd love to bash maxamps all day, but it's not a nice thing to do. It's just a matter of time before people start arguing... Think about what you say and make sure it's not to rude.

That old saying would come in hand here - If you don't have anything nice to say, don't say it.

[scarletboa]

i saw a rustler vxl chassis, body and esc melt after a 4000mah 3s minamps lipo caught fire and the parts that didn't catch fire just melted. minamps replaced the pack only to have the replacement puff severely on the 2nd run and after unpuffing, catch fire while charging (in a lipo sack). the gearing was only 17/83 and the amp draw was very low.

[glassdoctor]

I find it amazing to see all the horrible MA experiences on this forum. Maybe I just miss everything.... but I don't recall the same thing on any other forum.

I do see comments on other forums about the price, but not about puffing, fires, mismatched cells,etc,etc.......

If all my packs were like that, I wouldn't be happy either and I certainly wouldn't run them as a sponsored racer. Fortunately they work very well for most of us.

[jocktheglide]

MA provides great cusotmer service vs other lipo sellers out there I wonder why no one mentions hobbycity about wrong measurements and bash them about it, but it looks like everyone forgives them for wrong measurements even though they wasted the money and wont fit in their car. like glassdoctor said they work well for most of us....

[BP-Revo]

I wont say anything except this...

But when I first purchased Lipo packs, I started with two pairs of 8K 2S2P MaxAmps batteries. After 3 runs total (2 on one pair, 1 on the other) I sold them and purchased some FlightPowers and have never looked back.

[jocktheglide]

Originally Posted by BP-Revo

I wont say anything except this...

But when I first purchased Lipo packs, I started with two pairs of 8K 2S2P MaxAmps batteries. After 3 runs total (2 on one pair, 1 on the other) I sold them and purchased some FlightPowers and have never looked back.

How many manufactures of lipo are there though? I mean they eventualy get them from 1 or 2 sources and maxamps does the same thing they buy them i bulk from someone they dont make it themselves.

[Unsullied_Spy]

Originally Posted by jocktheglide

MA provides great cusotmer service vs other lipo sellers out there I wonder why no one mentions hobbycity about wrong measurements and bash them about it, but it looks like everyone forgives them for wrong measurements even though they wasted the money and wont fit in their car. like glassdoctor said they work well for most of us....

Providing poor cells and marketing them as top-of-the-line is different than being off on cell measurements. Also, if you tell HobbyCity they're wrong they'll actually listen to you

I had a 2s 6000 "20c" (should be good to 120 amps continuous) die in a ~3 pound Traxxas Rustler geared 18/90 with a Mamba Max 5700 combo geared 18/90 running in the grass. I was getting motor temps around 160 before stopping to cool down, and the ESC was around 140-150. If I were pulling a considerable amount more amps than the pack could provide the motor and ESC should get much hotter than that, 120 amps is a lot. Mine puffed up like a balloon and I had to discharge it and toss it.

I had a 3s 6000 "20c" lipo that I ran in my FLM extended Stampede running a VXL system as well as the same Rustler as I mentioned above. I didn't run it nearly as hard as the 2s pack but after maybe 50 cycles the #3 cell died on me (wouldn't hold a charge at all), see pics below.

I had 2 2s 8000 mAH "20c" packs that I used at first in my converted Revo with an MGM 16018 and Neu 1515 1.5D geared 22/62 with stock Talons. I then switched to using them in my Muggy, same motor and ESC, with a 13T pinion and after 150-200 cycles they wouldn't take a full charge, got soft and a little puffy after a run, and would lose charge over time. Fortunately these ones I bought their warranty on, and I returned them before I had 1 year on the warranty so I got a free replacement (after 1 year you pay 33% of the replacement cost, 2 years you pay 66%, and after 3 years you're SOL). The warranty replacement is where Maxamps actually did very well by me. I shipped them back on Monday morning via USPS Priority Mail and received my replacements exactly 1 week later, via USPS Priority Mail. Figure 2 days each way and a 2 day weekend and they have a 1 day turn-around, RC-M is the business I've dealt with that has a better turn-around time than that (shipped Monday morning across the U.S. and had my replacement on Friday).

Their new lipos are said to be MUCH better than the old ones, but there's a snowball's chance in hell I'm spending ~$220 for a 2s pack they they claim is a 35C. They spend all that extra money on advertising and "gifts" for their supporters to keep them coming and to keep their "Reader's Choice" awards flowing. You don't really think you'll read something negative about ANY RC product in a magazine, do you? I stopped buying mags because of all the crap, they're so worried about losing advertisers that they won't give you the straight-up truth about a product.

And now for the death of my 3s pack:

[Unsullied_Spy]

Originally Posted by jocktheglide

How many manufactures of lipo are there though? I mean they eventualy get them from 1 or 2 sources and maxamps does the same thing they buy them i bulk from someone they dont make it themselves.

AFAIK all lipos are produced in Asia because it's the only place in the world where environmental restrictions are loose enough to allow the construction of lipo cells. I don't know how many different factories there are or how many different lipo chemistries there are, but they obviously aren't ordering Enerland cells or it would show. If they would accurately rate their cells, charge a reasonable amount for them, and perhaps act with some dignity and respect particularly when confronted about these issues then they wouldn't be as bad.

[jocktheglide]

Originally Posted by Unsullied_Spy

AFAIK all lipos are produced in Asia because it's the only place in the world where environmental restrictions are loose enough to allow the construction of lipo cells. I don't know how many different factories there are or how many different lipo chemistries there are, but they obviously aren't ordering Enerland cells or it would show. If they would accurately rate their cells, charge a reasonable amount for them, and perhaps act with some dignity and respect particularly when confronted about these issues then they wouldn't be as bad.

thanks for that info....wasnt trying to start an arguement for sure in this early in the morning, but just curious myself how come I can buy a venom lipo pack 11.1v 3s 5400 mah (2 of them) for 250 shipped from towerhobbies (they even gave me 20 bucks certificate to tower for buying them) so actually it makes it out o 230 shipped vs a MA packs for 350 dollars even then I was told I bought too expensive. either way I bought packs from MA before nimh that is and they run strong just bought some lipos from them for the traxxas vxl 1/16th so I get to test them out also when I get that little bugger I only bought from them because it was marketed for the vxl and didnt want to 2nd guess any other lipo sellers if they fit or not.

[Metallover]

ooohh, venom batteries arent the best either...

[jocktheglide]

Originally Posted by Metallover

ooohh, venom batteries arent the best either...

sure the nimh arent, but your only one person who has said that vs the countless threads in other forums I have read rumor even has it that venom are flight power packs venom just buys it from them, but hey next you might tell me flight power packs arent the best either...... then again if I told you I bought zippys...well.....its a vicious cirucle aint it.

[Metallover]

Originally Posted by jocktheglide

sure the nimh arent, but your only one person who has said that vs the countless threads in other forums I have read rumor even has it that venom are flight power packs venom just buys it from them, but hey next you might tell me flight power packs arent the best either...... then again if I told you I bought zippys...well.....its a vicious cirucle aint it.

Follow this link, there're two venom packs on the pacge - http://www.rcuniverse.com/forum/m_83...tm.htm#8310589