Maxxamps batt always out of balance

[jocktheglide]

Originally Posted by Metallover

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

good reading there from this tests still proves venom is NOT BAD as what you porposed earlier, but he said NOT RACE WORTHY either vs others. Im a basher and im happy as is with my venoms I get bored anyways after 30mins of bashing with the venoms. its like buying computer parts you spend an extra 100 dollars on a radiator just for a 1C change in temps on the cpu some say not worth it some say hell with it same with the batteries he was testing you want an extra .01v get the flight powers not the venoms.

[TexasSP]

FYI bashers typically stress the lipo's more than racers. Hard bashing typically sees much higher and frequent amp spikes due to rough terrain driving. Race conditions tend to be more controlled and constant with less extremes.

[jocktheglide]

Originally Posted by TexasSP

FYI bashers typically stress the lipo's more than racers. Hard bashing typically sees much higher and frequent amp spikes due to rough terrain driving. Race conditions tend to be more controlled and constant with less extremes.

didnt know that thanks for that info...still get bored at about 30mins though....ran my tamiya hilux after wards thats slow with 5000mah nimh whoo hooo...7.2v of fury.

[BP-Revo]

I don't recall a single person ever having huge issues with FlightPowers.

I do know that someone went from MaxAmps 8K packs to FlightPower 3700's in his truggy and was blown away by the difference. The FlightPower packs had more punch, more top speed, and somehow more runtime. Thats an 8000mah pack vs a 3700mah pack and the 3700's had more run time!

Not to mention that the 3700's are rated 25C which = 92.5A continuous while the 8K's are rated 20C which = 160A continuous and tell me why the 3700's had more punch?

Solid proof right there that MaxAmps packs are overrated. A pack that is less than half the capacity with almost half the rated continuous current was putting out more punch and run time.

Gee, Maxamps not performing like they promote? Go farking figure.

[lincpimp]

So to start off both Venom and Maxamps use chinese cells. Early maxamps cells were not maxamps labeled on the foil, but newer ones are. They have steadily increased the weight and thickness of the same mah rated cells. So the c ratings of the early cells were very low 10c or less. I would never say that they have had a true 20c pack, at least none of the packs I have rebuilt or used.

Enerland cells were designed and built in Korea until recently when they opened a chinese facility. This is due to the chinese having large quantities of the raw materials necessary to make lipo. Plus they have loose laws on such production making it cheaper to make lipo. The enerland design is far superior to the chinese design, no way around that. Plus the quality control is better, why you do not see so many puffed cells. The chinese are getting better, the latest selection of great performing zippy lipos prove that. QC is still not where it needs to be with the chinese products, but considering the price you cannot really complain. I have seen alot of cell tabs come loose inside the foil on zippies, never seen that on an enerland cell.

These are the companies that sell enerland cell packs, other than polyquest, all are purchased as separate cells and assembled by the respective companies. Flightpower, Thunderpower (save for the 40c) Polyrc, Polyquest, Hyperion. Flightpower have a very intensive testing and matching procedure, probably why their stuff is considered the best.

Maxamps product is sub standard compared to almost everything else out there, and the price is just plain silly. Their matching, assembly and product leave alot to be desired. This is not conjecture, I have torn done 100s of maxamps packs and reconfigured them for others so that they can salvage some of their investment.

[phatmonk]

I just sent back a 4s 5000 Maxamps battery I have had for about 8 months.I sent it back because it was out of balance and my balancer would shut off.Now I only used it 10times.From the getgo it neverrealy balanced right.I should have sent it back when I bought it ok my fault.Long story short they are turning it into a 3s5000 battery for free so they have said.Still a 200.00 plus dollar battery I only used 10 times never puffed it.I would expect a new one atleast at 1/2 price but no dice.I WILL NEVER BUY MAXAMP AGAIN!!!!!!!!!!!!!!!!!!!!!!!!.

[Unsullied_Spy]

Originally Posted by jocktheglide

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.

Venom doesn't spend nearly as much money on marketing, that could explain the price difference. Maxamps has weaselled themselves into a good position with those Mini lipos, it's going to be a big product and it looks like they're on the front row for battery supply. I'm going to wait until they come out and measure the compartments and pick a lipo from there.

[phatmonk]

I have bought 800.00 in 3s batteries and 800.00 in 4s batteries.Yea I should have been more diverse in my battery choices.You guy were right after all.

[lincpimp]

Originally Posted by phatmonk

I just sent back a 4s 5000 Maxamps battery I have had for about 8 months.I sent it back because it was out of balance and my balancer would shut off.Now I only used it 10times.From the getgo it neverrealy balanced right.I should have sent it back when I bought it ok my fault.Long story short they are turning it into a 3s5000 battery for free so they have said.Still a 200.00 plus dollar battery I only used 10 times never puffed it.I would expect a new one atleast at 1/2 price but no dice.I WILL NEVER BUY MAXAMP AGAIN!!!!!!!!!!!!!!!!!!!!!!!!.

I find it interesting that maxamps appear to be reconfiguring packs for people now. They never did that before, they would just replace packs that had bad cells. I wonder if they have been reading my lipo repair thread!!!

There is a good reason most on this forum suggest other brands over maxamps, it is called experience. On a whole I have found the members on this forum have bought plenty of stuff and do experiment to find what is best. More so than people on other forums do at least.

[himalaya]

Hyperion said byebye to Enerland and has gone to Chinese LiPo cells and is now putting Enerland cell based "previous generation" packs on sale at aircraft-world.com with 30~40% of its original price. That says something.

[TexasSP]

To me it just says they want to make more money. They probably have a higher markup on the chinese cells.

[lincpimp]

Interesting to see that Hyperion are changing. They were always the most expensive of the enerland cells. I had a few hyperion packs, but they were 2 and 3s so I never really pushed them hard as they were in 10th 2wd vehicles.

It seems like the chinese cells are getting better, time will tell if they can last thru some cycles...

[himalaya]

Originally Posted by lincpimp

Interesting to see that Hyperion are changing. They were always the most expensive of the enerland cells. I had a few hyperion packs, but they were 2 and 3s so I never really pushed them hard as they were in 10th 2wd vehicles.

It seems like the chinese cells are getting better, time will tell if they can last thru some cycles...

Some tests done by EveryDayFlyer from rcgroup showed up something that's really interesting, the Hyperion new Chinese packs have their IR keep getting lower and lower when being cycled, making used packs more powerfully than new ones, aren't that ridiculous?

Enerland cell user posts show their batts have reverse behavior, higher and higher IR as time goes, which sounds more normal and reasonable. (Enerland datasheet specs only 50 cycle life typical when discharge at full C rating)

I bought myself a G3 4200mAh 35C 6S pack for my boat(you know fast boats are battery eating beasts ), looks good for the first runs, IR is 2.3mΩ/cell new, I'll watch how it's going.

[jocktheglide]

I guess being a newbie into this lipo stuff I should of asked the question: how can you tell if they are out of balance? I have a hyperion charger the AC/DC version and I always balance and charge at the same time...so would they still be out of balance?