6 cell or 7 cell nimh

[person123]

know that this probably should be in the electric general or whatever, but I am considering getting the new e maxx this summer so that I can drive something in the fall and winter.:bow:

The owner at my lhs is an electic guru, and I asked him if you get more or less runtime with a 7 cell or a 6 cell pack (I've only used 6 cell packs), or if you just get more power. He said that you get less runtime, and more power, and that I should just stick with 6 cell packs for all of my vehicles (because it provides a good balance of power and runtime). So I am asking, is what he said true? If it is, I'll probably get some more 6 cell packs if I get an e maxx, because I've gotten used to the long runtimes that you get with nitro.

I just dont want to spend the extra bones on loose smc -7cells and get my lhs guy to build them into packs if it wont be much differant from the smc e maxx dual 6 cell 3600 package. Speaking of that, woud it be better to get 1 pair of good smc 7 cell packs, or 1 pairs of those 6 cell 3600 packs? I dont want to spend a ton on an e maxx (if I get it) because it will pretty much be only for the rainy season/days. When it is dry, I will run my Savage X SS

Thanks everyone, you guys rule

Oh, and sorry about the long post

 

[ohmygahitscoby]

I know you get more power, just not sure about the runtime thing. I would stick with a 6-Cell because my friend had a 7 cell and he kept snapping parts.

 

[person123]

I know you get more power, just not sure about the runtime thing. I would stick with a 6-Cell because my friend had a 7 cell and he kept snapping parts.

I am a good driver, and I am not hard on my vehicles, so I dont think that would be a problem, unless you are talking about drivelines and gears. But with the 3905 e maxx, I dont think that would be a problem either

 

[HeartBreak]

The owner of the shop is spot-on. Whenever you have higher voltage flow, you're going to have decreased sustainable duration (ie; runtime). It won't be very drastic; on the order of about 5%, give or take.

 

[CharliesTheMan]

You can get the Venom 5000 mah 6 cell packs on ebay for around 50 bucks with shipping. From what I understand, they provide about twice the runtime of the 3000 mah batteries. I've got a couple on the way, once they get here I'll let you know how they do.

 

[abadk9420]

I have been running electric for along time and the only difference I have ever noticed running a 6 cell verses a 7 cell is that the 7 cell will be faster if they are the same compacity your run time will be about the same...i have the 6 cell verion of these and they have been great packs for my e maxx with a brushless novak 6.5 hv set up http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXRUG4&P=7 ..

 

[ohmygahitscoby]

I am a good driver, and I am not hard on my vehicles, so I dont think that would be a problem, unless you are talking about drivelines and gears. But with the 3905 e maxx, I dont think that would be a problem either

Yeah, I meant some things in the driveline. I believe they were plastic shafts, but they were plastic. If you were going to go with 7 cell, I would upgrade anything that has to do with the engine to titanium or aluminum.

 

[person123]

THIS GOES TO ALL-------------------------

So are you saying that I should go with 7's or 6's? I'm kinda confused now because it seems like everyone has something different to say:constipat. Also, I have smc ib cells for my other electrics, and my lhs deals with smc. I went to the smc website and they stopped using ib cells; now they use enerG cells. Has anyone heard of these cells or used them? Also, I noticed that my lhs also carries a lot of reedy wolf packs; would they be good? They only go up to 3600 mah so Idk.

Thanks

 

[HeartBreak]

The choice is ultimately up to you. Do you want more speed? Are you racing? If racing, does the class you are running in allow 6 or 7 cells?

Answer those, and then look for the highest mah rating you can afford.

Those questions should help guide you to your desired pack.

 

[person123]

ok, thanks. I would not be racing, but more power for not a lot of cost is good....so I'll keep asking around. Thanks guys, for the help:yes:

 

[Brushlessboy]

What you didnt say is what type of Emaxx. 14.4 or 16.8 volt. 7 cell are 8.4 volts and 2 of those will kill the EVX2 speedie. Not to mention standard Emax battery hold downs wont accomodate 7 cell, unless its a low amp rating, (short batteries as opposed to 6 cell flat, 1 in the middle).

 

[person123]

What you didnt say is what type of Emaxx. 14.4 or 16.8 volt. 7 cell are 8.4 volts and 2 of those will kill the EVX2 speedie. Not to mention standard Emax battery hold downs wont accomodate 7 cell, unless its a low amp rating, (short batteries as opposed to 6 cell flat, 1 in the middle).

I'm talkin' E maxx 16.8:yes:

 

[abadk9420]

What you didnt say is what type of Emaxx. 14.4 or 16.8 volt. 7 cell are 8.4 volts and 2 of those will kill the EVX2 speedie. Not to mention standard Emax battery hold downs wont accomodate 7 cell, unless its a low amp rating, (short batteries as opposed to 6 cell flat, 1 in the middle).

Actully you can run 7 cells in a old e maxx they have special configuration that allows it but I still wouldn't run it with the old e maxx esc. I have 2 3300 mah nimh 7 cell packs that I run in my e maxx w/ novak hv brushless 6.5system...

 

[frickenjoey]

The Max Amps 4700 7 cell pack give about 20 minutes of run time in the 16.8V (new) E-max. Tons of power and runs great. I would say the 7 is the way to go.

 

[abadk9420]

upgrade it to brushless w/ 2 hi mah 7 cell packs and you will get longer run times, virtully no maintenance, and more power and speed and all of that = more fun!!! and posibly broken parts if you can't control it LOL!!! its all about throtle control, good luck!!!