Almost any setup is too potent for those older 6000 packs, IMO. :angel: I hear the newer ones are much better though.

Jason from maxamps told you that, huh...

Nope, Austin. He said they have a totally different source and that they are a big improvement in cell quality. While Jason and I are "less than best friends", Austin and I get along pretty well.

Austin had sent me a 25C 8k pack and it was significantly better than the previous "20C" packs. Who knows about the rest of them? I don't see myself putting any money into their lipos anytime soon, but I am hopeful that the new packs are as good as advertised for those who do purchase them.

Here is some info from the actual PM's:

"It is a different source that the new cells are coming from, yes. We actually will be upgrading all the cells to 30C over the next month or so. The 3000s will become 3250 30C cells(with no increase to price by the way). They will be followed by the 5000 cells, then the 4000 cells.

We tested them at 30 and 35C. They get about 2500mah at 35C constant and almost 3000mah at 30C constant with good temps. They are a winner. Its the best 3000 cell we have ever tested by far.

Lets see... at 35C it would last a little over a minute the way I figure it. I am thinking that there will not be many guys running it at even 30C constant for the 2 minute run time.

Bottom line is that voltage under load will be very high and it should not hit cut off under a short high amp load.

-Austin"

Love them or hate them, it's always nice to see improvement.

Alright linc, I may or may not run it, but I have had the official warning so thank you.

As I said I bought those packs because they are the same size as a standard 6 celler, and admittedly knew next to nothing about lipos when I got them last March. I've learned TONS since then and much of that info has come from you and other members here. I do have two EVO25's that work great, but they are also $120 a pop, I am eyeing the new Hyperion Sprint 4000 packs which are half the price, I will probably buy 4 of those so I can have 3 pairs. I do have someone in mind with a Slash who I can unload the good MA pack on, and I think this bad pack will be going out in a blaze of non-glory.... charge it-short it-shoot it lol I may even get video..... Thanks much for the info.

I will refer any repairs in the future to you linc. I just hope people will avoid MA altogether and not have the buyers remorse- it really stings....

Nice that they will not increase the price... I wonder why?

Dude, don't shoot it! I can make you a pack, or I will give you something for it if you send it to me. If you do shoot it you may as well shoot a tree. Nothing will happen. Over charging will make a bunch of smoke, thats it.

Not as fun as you may think.

Way to steal my thunder- Doh!

I'll be pming you linc, something is better than nothing for sure.

Ok, so a member here sent me a few packs and I thought one would be interesting to disect and show my wonderful viewers what it looks like.

This is a maxamps 6000 2s lipo. It is a 2s2p configuration of 4 3000mah cells.

Note the non-rectangular shape, this is due to puffing of at least one of the paralleled cells. I will disect it and take some more pics as I go.

http://i206.photobucket.com/albums/b...p/DSCF2968.jpg
http://i206.photobucket.com/albums/b...p/DSCF2969.jpg
http://i206.photobucket.com/albums/b...p/DSCF2970.jpg

I still can't believe MA or any other mfr would parallel cells like that. I know there are a few others, but the only truly safe way to work with that config is to charge it as a 4S and run it as 2S, but the balance tap is 2S....stupid!

Linc you should make a mattress out of all the puffy cells and make certain people sleep on said mattress- I'd pay to see it....

Took the shrink off.

Note that the 1st cell is very puffed, and the 2nd cell is slightly puffed. Both cells are very near 0v, so they are gone. A good rule of thumb is that if a cell is puffed it is done and needs to be disposed off. If a cell is not puffed and below 3v it may be able to be recharged. I have a technique for doing that. Also if the foil covering is torn at all the cell is done and needs to be disposed of.

On this pack the 3rd and 4th cell appear to be fine, they are a bit deformed by the puffed cell pushing on them, but should be fine. I still completely disassemble the pack and indivdually test the good cells before I make them into another pack.

I have found that maxmaps does not do the best job matching their cells. So in a paralleled stiuation you may have one cell that is stronger than the other. Now the badly puffed cell in this pack is likely a weaker cell, and it was asked to discharge a bit more than it could, and thus puffed. I have seen this alot with the 3000mah cells, as they are 15c cells at best, and even a 10th scale 2wd can draw more than they can put put out.

http://i206.photobucket.com/albums/b...p/DSCF2972.jpg
http://i206.photobucket.com/albums/b...p/DSCF2973.jpg

Only prob with your method is that the balancer wire hookup would not work with the cells paralled. Now you could have 2 completely seperate packs (1p config) that had some sort of plug on the output wires to parallel them together, and then shrink the 2 packs together to have 1 larger pack. Then seperate the output wires and wire it as a 4s pack when charging. The way the cells are assembled is that 2 cells have the pos tabs attached together, and the neg tabs attached together, basically making one larger "cell". Then those larger "cells" are assembled in series for the desired voltage. So unless you seperate the cell pairs there is no way to charge them seperately.

I have run 2s packs in parallel before, and then charge them as a 4s pack with a charge adapter, it is the best way to gaurantee that the cells are all charged properly. How ever if the cells are not all matched at the factory, you may never get them to work together perfectly. The only real way to do it would be to disassemble a 4s pack and make 2 2s packs and then wire them in parallel via the output leads.

This is all a waste of time IMO, as you can get good cells up to 6000mah (enerland) and if you want more runtime just swap out batteries, keeps the weight low and that is always desired.

"This is all a waste of time IMO"

Exactly. Why overcomplicate things?

Are these the only MA packs like that, or are the 4S packs actually 8 cell?

All of the 6000 and 8000 packs are 2p, made up of 3000 and 4000 cells, respectively.

So a 4s pack in either will have 8 cells.

Maxamps only do this cause they want some big mah numbers, and nothing they have save for the 8000 cells will run a MT in a 4s config. Their 5000 cells are worthless, my 5s 3700 poly rc 25c pack had way more punch and about the same runtime as a maxamps 5000 20c 5s pack... That was in a revo with the mech 2 speed and mech brakes with a 1512 2000kv motor geared for low 40mph range.

What a joke... no wonder they don't use clear shrink.

I know you're busy- and thanks for the info!

No prob, I have a pair of neu 5000 4s pack that I have to break up into 4 2s packs. I will post some pics of that process too. And some finished products so that people can see the end result.

Here are a few pics of a 4s pack that I broke down into 2 2s packs. Pretty straight forward, just figured you guys might want to see a finished product. I normally use 12 gauge wire and deans plugs, but I can put on any type of plug or wire there is. I prefer hyperion balance taps, but yet again, any style can be put on.

http://i206.photobucket.com/albums/b...p/DSCF2975.jpg

http://i206.photobucket.com/albums/b...p/DSCF2976.jpg