SHS's new 20C lipos?!?!?!

[PhiBeR]

http://www.singahobby.com/ele08.html

Look at the new 1250, 20C discharge lipos..
SURE OR NOT? or is 20C the burst rate??
1250 can discharge at 25A?!?!?!?

Makes it a very good choice for the TRex...
Even better than the TP 1320 at 12C..

Somehow, i think SHS is being CB again..
Giving fake stats and fake numbers!!

[Super-Hornet]

20C??? Sure or not? Don't really trust it leh.

Suspect could be fake.

Super-Hornet

[PhiBeR]

That wat i suspect la..
SHS always bullshitting one!!

I never trust them!! until someone willing to take the risk to try..
How can be 20C??? that makes it even higher C than any KNOWN
packs in the market lor!
Beats Tanic, TP, Apogee, Irate, etc.. u get wat i mean? heh..

[Mathieu]

Yup, they exist, the new generation of kokams. Saw them in action, the power is mad. Only thing is, the 1200s weigh as much as the 1500s or maybe even more.

[PhiBeR]

Ok.. how much are the prices for the 1250s??
Yeah, noticed the weight too.. as heavy at the 1700 etecs!

[Super-Hornet]

Both I have 4 packs of Kokam that all died on me within 1 month! Some more I purchase them from SHS.

So, can we trust the new kokam or not?

Super-Hornet

[mack]

Kokam cells might be of higher capacity than stated. Maybe, that is the reason for the heavier weight.

With a higher capacity pack, you could draw a higher discharge current. But, this higher discharge current from the pack do not mean that it is discharging at the number of times its stated capacity. Most likely, the current discharged is at the number of times its 'hidden' capacity.

Is the 20C a continuous or surge current? If it is the surge current, then don't use it as if it is continuous discharge from the pack. Prolong much higher discharges other than continuous current discharge from a lipo pack could shorten the lifespan of the cells.

Have fun!
mack

[loyn]

I think we should leave individual to do their only judgement. As for me usually stay within the continuous discharge range which meet the max current for the power unit. This way will put less stress on the lipo.

Normally ppl will use the smaller or lightest battery possible which can handle the power requirement. As weight in EP is always the problem. We do not want to weight down the model too much.

So is up to you to make the call of higher capacity (less stress on the lipo but with extra weight) or higher discharge (stress on lipo but lighter in normal lipo cell) . But for this case is another story as low capacity , high discharge and extra weight .....

[mack]

Yes, weight is always a problem with EP. Everyone is concerned with it.

There should be some increases in weight when the continuous discharge rate of a lipo cell increases.

Hope that in the near future, manufacturers could produce lipo cells with higher discharge rate with minimal or without increase in weight.

cheers

[X34]

I am using Kokam 3200mah 20C right now, personally, I have not heard of the 1250mah. That is news to me too. If it is true, it is ideal power source for the micro helis.

James

[PhiBeR]

X34,

Really 3200mah 20C cont. discharge??
That's like 64amp cont.?!?! Muz be a very big pack!!

[X34]

Phiber,

Jus saw your post today,

Yup 20c, really can. about 1.5 times longer than the kk2000, its was developed for cars boys.

Cheers

[PhiBeR]

I see..

I've heard that they're not cheap and really big!
I'm guessing could be possible they understate the capacity to
achieve the current?
Seems that the 1250 cost like $90++ and size is big!

[Brandon Chng]

haha ya sial la their os37 as powerful as os 60 man

[X34]

Originally posted by PhiBeR
I see..

I've heard that they're not cheap and really big!
I'm guessing could be possible they understate the capacity to
achieve the current?
Seems that the 1250 cost like $90++ and size is big!

Hi Phiber,

Let me check out the 1250mah. It is very easy to verify, discharge the pack at 0.5c The 3200 that I m using has about 3300mah at 0.5c discharge. The Etac 1700 has about 1870mah.

James