Is Maxamps any better now?

[JERRY2KONE]

Originally Posted by asheck

Better then the old 20c over rated,over priced ,powder puff packs.Yes.

So I guess the question still has not been answered. Does anyone with experience know if the new packs are any good, or still the same crapp as the 20C packs????? ANYONE???

[starscream]

Originally Posted by JERRY2KONE

So I guess the question still has not been answered. Does anyone with experience know if the new packs are any good, or still the same crapp as the 20C packs????? ANYONE???

Im no math genious but I'd say these packs are 33% better than before

[George16]

I would not risk my money just to try these batteries when I know I have good luck with Neus and Polyquests.

[slash_48]

I have a 2s 6500 30c hard case and a 6000 3s. Haven't had a problem with them at all. But I won't say they are better than any other brand or any worse. I'm happy with mine.

[Dagger Thrasher]

Lol! That is the most pathetic excuse.

"Sorry, but at this time we don't want the competition to see what we have."

Paraphrased:
"Sorry, but I know this cell doesn't perform up to scratch and don't want to show a discharge graph in case people realise how poor the cell really is, and buy better packs from the competition."

At least, that's my take on it...

[sikeston34m]

Originally Posted by Dagger Thrasher

Lol! That is the most pathetic excuse.

"Sorry, but at this time we don't want the competition to see what we have."

Paraphrased:
"Sorry, but I know this cell doesn't perform up to scratch and don't want to show a discharge graph in case people realise how poor the cell really is, and buy better packs from the competition."

At least, that's my take on it...

I aggree!

It is this type of talk that makes what is going on "behind the scenes" pretty obvious!

Refer to the link in post #5 of this thread. It shows a discharge graph of a "35C" cell. In reality, it isn't even a 25C cell. What does that tell you about what they are hiding from the "competition" concerning the 30C cell?

I'm planning on getting back into Ebay soon to sell off some of my RC stuff that's I've collected. With the funds from that, I think I will invest in some discharge, data collecting equipment.

If you guys want an unbiased 3rd party to do discharge testing and reporting, I think I will volunteer.

There has to be a way to come up with a standardized method of testing. A "yard stick" if you will.

[sikeston34m]

I believe a Continous C rating should be one that doesn't harm the Lipo AND doesn't drastically reduce the cycle life of the battery.

This would mean that it holds 3.3 - 3.4 volts per cell under that load for 75% of it's discharge cycle without heating up to a critical level.

This could even be 3.5 volts per cell. Volts per cell under a load should be whatever is aggreed upon. (I smell a heated controversy just coming to a decision on that one. LOL)

Testing is to be done under controlled conditions. Same airflow around the cell during discharge and conducted at the same ambient temperature.

What are some of the options for discharge equipment? I need some help answering this. Please feel free to post or pm me with more information on this.

[johnrobholmes]

The big issue with 10c lipos is that they can burst 12 to 15c before falling flat. IF you never even hit the continuous rated current you are fine, but there isn't much overhead room.

I would rather run a 20c 4000 than a 10c 8000. If 4000mah wasn't enough runtime I could just keep a pack ready to swap out :D

I would rather run a 20c 4000 than a 10c 8000. If 4000mah wasn't enough runtime I could just keep a pack ready to swap out :D

I'm the opposite.Reason being is that even though they are both rated the same amps,If you only had to drain the 8000 for 4000mah it should be capable of probably 100 amps constant and hold better voltage.I know my 8000mah 12c SPC has pushed my E-revo to 52 mph,on 4s.They have to be able to hold voltage under some serious load to that.Even after 20 minutes they will still hit 50.

[johnrobholmes]

My reasoning is the burst, and partially the weight. Most 20c packs will take 35 to 40c before falling flat. Most 10c packs will take 12 to 15c. Dont get me wrong, I have my fair share of 10c and 12c packs that still get used plenty. They do have a place for bashing and lower amp draw use.


On my ebike I have 12s2p 4.4ah 25c packs. 110a continuous available, the packs never see more than 35 or 40a. This way they should last a very long time.

[lincpimp]

I have had very good use out of my 12c 3600mah polyquest cells. Still use them in my supervee boat, 8 cells in a 2s2p config for 4s 7200 mah and around 86amp cont. Plenty for that boat as it only does about 3/4 hp so only needs around 40amps. My reserve does provide better punch though, and the weight does help the boat out, as it is designed to run 12nimh cells.

Now they are old tech, and just as big and heavy as a 5000 25c pack. I prefer the lightest pack I can get away with, as weight makes the biggest difference to vehicle performance.

[johnrobholmes]

That is what I have, the 10 and 12c poly 3600's. I throw them in my f-350 or twarg for hours and hours of playtime. In the pede they don't hold up so well. In the emaxx it is just plain sad.

[BrianG]

I like running a higher C rate battery because you are not pushing the cell to its limits. Therefore it will last longer. Not only that, but voltage is more steady.

The only time I use a low C rate battery is if I have high mAh to compensate and want runtime rather than reduced weight.

Ok,maybe Im looking at this the wrong way.But it seems by combining cells into a large capacity pack the c ratings must go down ,by design of the pack.Because of the increased runtime,and the cells sitting right on each other,you will get increased temps.So it would seem to me that combining the 2 you would have to drop the constant rating to make up for it.So if you used 20c 4000mah cells to make a 20c 8000mah pack,the pack would not actually be capable of that .As the pack itself would have to discharge at either twice the time,or twice the amps,either of which would cause more heat,in pack form.So to over come this they must drop the c rating some,to come up with an accurate pack rating.So because MA uses a single cell rating on there pack,the bigger the pack the further off there ratings became.Then a TRC 10c ,that alot claim are underated,Actually perform that good because to accurately make a 10c 8000mah pack,they use 15c cells,so it actually will do 80amps for 8000mah,but seems to perform better then that . This is just my theory, So please correct me where my thinking is askewed.

[johnrobholmes]

I personally don't like the low rate cells on my crawlers. I tend to run hot setups, and I have puffed many 12C 2100 packs. 25C 1300s are my favorite small pack, and 25C 2200s are my favorite larger pack on a crawler.