Batteries getting hot in e-revo

[revokid]

Hi my batteries in my e revo have been quite hot the past 2 runs. Im running in winter in the cold weather so what should I expect in the summer? Is this normal? Thanks

[Revocanuck]

What type & brand are you using for batteries

[revokid]

4200 7 cell matched packs by John the Battery Guy.
www.fastrcbatteries.com

[Revocanuck]

Are they the second battery on the list?If so do a forum search of the word tenergy

[nicecj7]

I have the same batteries and they do the same thing , i actually had one cell explode in a new battery w/ only one run on it but John fixed it and had it back to me in a day. I also have a set that has about 20-25 runs on it w/ no probs ..Great guy and knows his batteries

[clowkoy]

4200 7 cell matched packs by John the Battery Guy.
www.fastrcbatteries.com

Those are low-quality cells, not advisable for E-revo.
I have an 8-cell pack for my rustler when it was still running brushed. Even with brushed set-up, it still overheats.

[kulone]

Hi my batteries in my e revo have been quite hot the past 2 runs. Im running in winter in the cold weather so what should I expect in the summer? Is this normal? Thanks

Your setup please:

gearing
motor
esc

[revokid]

Everything is stock. And im pretty sure the batteries are not junk. Thanks for your opinion.

[revokid]

Are they the second battery on the list?If so do a forum search of the word tenergy

No, first batteries.

[MXrider]

Be sure you are not over discharging them. When the performance drop is noticeable, stop running it. That should solve your problem, as I use cheap packs too and mine don't get too hot.

Also, you could go down to 17t pinions, as that will be less strain on the motors.

[revokid]

He told me no need to discharge them?

[nicecj7]

Those are low-quality cells, not advisable for E-revo.
I have an 8-cell pack for my rustler when it was still running brushed. Even with brushed set-up, it still overheats.

Hmm ,My revo flew w/ these batteries but then again im new to this and my e-revo is stock. So these cells are junk? What makes a good cell?

Whats the best battery w/out switching to lipo.

[revokid]

Hmm ,My revo flew w/ these batteries but then again im new to this and my e-revo is stock. So these cells are junk? What makes a good cell?

Whats the best battery w/out switching to lipo.

I really do not think these batteries are junk.

[Brushless Moose]

the best nimhs are Any pack built with Ener-G 4600 cells, matched and s x s config of course!

[nicecj7]

well either way i have 2 sets from fast rc batteries and they are working fine if i get another set maybe i will try the Ener-G 4600 cells

[MXrider]

He told me no need to discharge them?

No no no. I mean in the truck. Discharging is simply running them. When you run the truck, be sure you stop driving when the performance drops. That should solve your problems.

[nicecj7]

Not to highjack the thread but seeing that everything is stock on the e-revo except for the 7 cell batteries should the gearing be changed for optimum perfromance and longevity of both the batteries and motors? IF so what should it be changed to ?

16t pinion?

[HoovHartid]

yes. That is a good idea.

[EREVO2121]

i have 4600 rocket packs and those boys are way hot after each run, melted the plastic at one time. Are Ever-G 4600 a better battery pack then my rockets?

[taken]

i'm running really hot right now as well, any advice.
I just put my new 6cell, elite 5000 battery pack in from cheapbatterypacks.com, ran a good run tonight, but they were smoking hot, as were the motors.
i'm running a near stock setup, except for the addition of new wheel and tire combo, proline mashers on rpm revolver rims. same basic height and width, lower overall weight.
I can't think of why it would be so hot, are the batts too much?

[Gregarious76]

You will need one of the following three things:
*more conservative gearing
*shorter runs
*lipo

[HobbyGuy321]

taken,
Your truck is way overgeared with the stock gearing and the proline mashers. The truck is overgeared from the factory and should be geared down to about 17/68 stock. The heavy tires add more rotating mass which puts stress on your drivetrain and motors. So you should probably gear it down to 15/68 for cooler running with your setup.

As for batteries, I would recommend some of trinities 7-cell ib-4600 packs in a quality side x side construction. IMO they are much better than my promatch matched ener-g 4600s and my elite 5000's. They seem to have more power, run longer, and stay much cooler than my other packs. If those are too expensive, you can always go with the matched promatch batteries. They are just a little over $100 with free shipping.

Hope this helps.

[Revo¹]

It has been said, but I want to clarify something...

If your battery-pack has the cells laid out end-to-end, it isn't a very good quality pack...if the cells are laid out side by side, it is a better quality pack.

Also, if the connecting bars are very thin and have been spot welded to the ends of the cells, it isn't a very good pack...but if the connecting bars are thick, and have been soldered to the ends of the cells, it is a better quality pack.

[E-REVOdreamer]

I bought his e-revo and they are descent batts and don't get too hot.