What batteries to buy and why? - Page 2 - RC-Monster Forums

BrianG · 03.12.2007, 01:18 AM

Does Flightpower manually measure and load match cells for each pack? If so, that could add to the price of the pack, but worth it IMO...

03.12.2007, 02:01 AM

I'm so up in the air about this, I'm about ready to go back to nitro. I have my buggy running so well that it has exceeded all of my expectations, but these issues with the batteries are killing me.

The 4900mAh FP pack is around $250. That's almost $100 more than a maxamps 6Ah pack. Am I correct in understanding that these flightpower packs will run cool in my buggy, where the maxamps packs have failed to do so? If that is the case, the price of the FP pack will be well worth it, since I've already thrown almost $500 worth of maxamps packs in the garbage already.

captain harlock · 03.12.2007, 02:15 AM

IT WILL BE WORTH IT.

You can refer to either Serum or another member called virusss to give you more details about them.

I'm not talking out of anticipation. I have them at hand( the 3700mah ones) and they are extremely strong. I've even shorten them by accident and thought that they'll blow up very soon, but nothing happenned. Not even a single rise in the heat measure was felt.

I chose the 4900mah for you, since they are even more powerful than the 3700mah( giving more juice).

I believe you're gonna need a 4s pack for your buggy?

Then try out the TrakPower 4900mah 2s1p pack and see for yourself.

Our friend virusss was able to push his LSP-R truggy to 50mph+ with two of the trackpowers and only the tiny 1930/8 motor.

03.12.2007, 04:11 AM

I've thought about the trakpower packs, but would really prefer to run a single pack. The other thing about the trakpowers is the balancing connectors. I use a Thunder Power 1010C charger and like the interface with the TP balancer. I really don't want to loose that.

I've also looked at the 4800mAh Kokam packs. They are a bit less expensive and they are wired the way I need them to be. They will also fit my battery box perfectly, where the flightpower packs will require me to make a new battery box.

What do you guys think of the Kokam cells? I've heard good things and that they are really tough cells. Does anyone know if the balancing connector on the Kokam packs is compatible with the TP balancer?

03.12.2007, 04:15 AM

OK, another question. I really hate all of this second guessing. If the enerland cells are what's great, what about the polyrc packs. They are supposed to be the same as the hyperion packs and are made up of enerland cells. Purehobbies has the 5Ah 20C packs for under $200.

captain harlock · 03.12.2007, 06:56 AM

As far as I know, Kokam and FlightPower batts are the best in the market, but I'd rather that you go for the FlightPowers, since alot of people here are starting to lean to it.
As for the other question, someone else should enlighten you.

Sylvester · 03.12.2007, 09:30 AM

Id go flightpower right away!

Soon there will be flightpowers everywhere, lehners used to look expensive, but now people are munching on Mike to get their own! :)

Flightpowers are expensive to people who havent tried them!

captain harlock · 03.12.2007, 09:51 AM

YEP, YEP, YEEEEPPPP!!

glassdoctor · 03.12.2007, 10:41 AM

Here's a heads up on what I found out today talking to Kokam... (not trying to spoil the enerland lovefest, hee hee)

They have a new line of 30c cells coming this summer. So far 4000 is the biggest cell but they say larger ones are in the works. I asked for a @5500mah cell. :)

Anyway, I asked about the discharge #'s for this 4000 cell (rated 30c continuous.. 120 amps) and he said it holds @3.8v for @80% of the cycle.

That is awesome! They are claiming that these cells will handle ANYTHING you can throw at them, period.

hmmmm..... me thinks we need to build a Baja 5B and run it on a single 4000mah pack :D

skellyo · 03.12.2007, 12:06 PM

Quote:

Originally Posted by glassdoctor

Here's a heads up on what I found out today talking to Kokam... (not trying to spoil the enerland lovefest, hee hee)

They have a new line of 30c cells coming this summer. So far 4000 is the biggest cell but they say larger ones are in the works. I asked for a @5500mah cell. :)

I'd imagine that by the time those come out, they won't be the only ones on the market with those kind of numbers. The big question though is what kind of form factor will they have with their cells? The 4900mAh enerland cells are just about made for locations where a standard 6cell sub-c pack would go. Granted, that's not necessary for most of our conversions, but it is nice when you want to pop one of your 2S packs in a B4/T4/Rustler/Stampede/Whatever that is set up for a 6cell sub-C pack. That's the primary reason I went with the Trakpowers...great numbers and a size that will fit in my LSP-R, E-Maxx, T3 or EVO III without hassle.

glassdoctor · 03.12.2007, 12:14 PM

According to the guy I talked to the 4000 cells are due in 7-8 weeks. I'm not saying these are better than brand X cells... it's just the latest and greatest from Kokam.

For what it's worth the Kokam 4800s are made to replace nickel packs... it's what is in the Orion/Peak hardcase lipos. The 4800 are labeled 20c...

skellyo · 03.12.2007, 12:36 PM

Quote:

Originally Posted by glassdoctor

According to the guy I talked to the 4000 cells are due in 7-8 weeks. I'm not saying these are better than brand X cells... it's just the latest and greatest from Kokam.

We'll just have to get you to buy some and run em on your eagletree to give us some numbers for em. :027: If the price is right, they could be a good alternative to using Flightpower 3700's.

captain harlock · 03.12.2007, 12:54 PM

It isn't like I'm biased to a certain brand or something, but FlightPower is the only thing that I can afford with world class performance. A 3s 3700mah from flightpower is worth 120-130 dollars. From Kokam( with only 3200mah capacity) it is worth 185+ dollars. I'd say FlightPower has the upper hand till now. Oh well, if Kokam can make some 4000mah packs with reasonable prices, I have no problem to get some of them..:)

glassdoctor · 03.12.2007, 01:03 PM

The current Kokams are similar in price to flightpowers but still a little more... 3s 3200mah is $129 at towerhobbies.

Hopefully the next generation packs stay about the same $$....

I think I'm going to try one of the Kokam 20c 4800s.... but I really have not had any problems with the Maxamps 5000s so it's hard to justify dropping more $$ on another pack.

But I'm dying to know if I'm missing out... and it would let me compare the #'s and see if my eagletree is all jacked up or what?

skellyo · 03.12.2007, 01:16 PM

Quote:

Originally Posted by glassdoctor

I think I'm going to try one of the Kokam 20c 4800s.... but I really have not had any problems with the Maxamps 5000s so it's hard to justify dropping more $$ on another pack.

Why would you buy the Kokam 4800's instead of Flightpower or Trakpower packs? They're pretty close to the same price even.