New 35C hyperion G3 packs arrived...
 

I just got my Hyperion 3s 35C 4200mah packs in today.(5 days from Japan) I got a plug soldered on one, and halfway through the second, the soldering iron tip burned out. So there was no testing today.

Notice the side x side pic of them next to the 7s1p A123 pack, same size, little heavier, and twice the energy available, boyah. Can't wait to try them.

Oh, and the other three packs are the old stock packs I got for killer price, $90 each. 6s 4350mah/25C packs.

Look sweet. What burst rate to the 35C's have?

yea i saw those. i was tempted to buy those, but i chose the flightmax 5000 25c 6s instead.
if those hyperion litestorms were 5k, i woulda went with those.
do you have any of the flightmax by any chance. i would like to see a comparision to see if i made the right choice.

Wish you good luck on the old 25C 6S 4350mAh packs, pay sufficient attention to each cell's IR.

I believe I've shared my experience with you in another thread, exactly same pack from same vendor I think.

Really? I don't recall you saying anything about them? Do you have these packs?

They are going to be used in a lawn mower, so only about 2.5C MAX discharge.

I've ran my G3 VX 35c 5s 4200 for over a week now and it is a very nice pack indeed.

Nice, did you get that 5s pack from Mike? I wonder if he will get some 6s and 3s packs in?

These packs are seriously not much more than A123 packs for the energy stored, ~22% higher cost per Wh over A123's. Also, if a last generation lipo that were taken care of would last between 150-200 cycles, they say these new packs last 4x cycle life... that's 600-800cycles, awesome. Now, all they need to do is make them intrinsically safe... but, they would need a different chemistry for that.

I yearn for the day when A123's next gen. battery comes to market... 200C/400C capable(basically 100% efficient), and 400+Wh/kg. The M1 cell holds ~100Wh/kg real world energy density... and these new lipo's hold between 140 - 150Wh/kg (depending on C rating/type).

So I did my first run with the 35C packs, and my first run with lipo packs period.

holy crap, holy crap, holy crap

I AM IN LOVE!

I swear if I never knew better I would of thought I was running a 1521 motor on my 7s2p A123 pack! Keep in mind this is the exact same setup as before, same gearing, whatnot. It is such a jump in performance over a 7s1p pack, like I can wheelie at almost any speed! It's insane! I am doing the same with less than 3/4 throttle vs. 100% throttle over the A123 pack, punch wise.

This is the first run, and Hyperion says it takes 5-10 cycles to reduce cell Ri, and still over the next 100 cycles as well (although to a lesser extent). Each 3s pack has a rated 0.004Ohm Ri, or 0.008Ohm for 6s... that is the same Ri as one M1 cell! I don't have my 720i charger in yet, so I used my power supply to charge them up using a 4.1v/cell CV voltage, so I am most likely not seeing the full performance of these bad boys.


Notice the packs voltage holding ability! 3.7v/cell @ 100 amps, yikes. That's 23C discharge! It barely gets below 22volts for bloodin sakes!

Welcome to the World of Lipo! :yes: Mr. A123 Guy! LOL

Sounds like you're having fun.

Well, I'm tellin you, I can't wait until tomorrow to run it again during the day. I know, I have been a very A123 guy, probably due to the fact that I am an electric car enthusiast/builder and A123's have been better suited(cost, cycle life, safety) for that application... just carries over I guess.

Funny how it holds about 3.875v/cell @ 30 amps. That's heavy duty. Also, 3.7v/cell @ ~85 amps.

This run I was extremely hard on the throttle, basically doing high speed runs in the ditch while doing WOT wheelies at near top speed.

Here it was, in another thread of yours:
http://www.rc-monster.com/forum/showthread.php?t=21129

http://www.rc-monster.com/forum/show...=16241&page=19

I am not too comfort to talk about something bad very loudly, sorry for that if I remind you too late.

Yes I have the same old VX 25C 4350-6S pack and found the above, just watch each cell's IR, good luck buddy.

PS: after that I switched to new G3 VX 35C 4200-6S pack, awesome batteries.

Has anyone else had trouble with this particular packs? I'm sure you just got a bad pack, which is bound to happen with lipo's. Again, unless of course it's happened to others, then I will be P!$$#D off.

The way you did the test to figure out the cells resistance is not very accurate however. Was the performance noticeable? How long have you had them? Have you thought about taking the pack apart and doing a high discharge test of each cell?



I am going to try and do a full eagletree run on the pack today if I have time. Yes man, these packs are awesome, but then again I'm sure any high end lipo pack would be killer going from a 7s A123 (2300mah). I might do a high speed run, geared for ~65mph.

Cheers

I am the opposite of you ZPB. I started with lipo and after a while got some decent enerland based lipos. I have tried all of the cheap lipos as well. I then gave a123 a try and was a bit dissapointed. They were too heavy, bulky and just did not perform as I would have expected. Voltage drop was very noticeable with them even in a 2p config.

The are more robust and are supposed to last longer than lipo, I can appreciate that as being very desirable for alot of applications, especially cordless tools.

I like the fact you are testing those hyperion packs for the rest of us. I may have to break down and by new lipos! Time to sell off the current bunch I have... That will take a while...

This is the exact reason why my 40 A123 cells (all configured into packs of course) have been sitting. Lipo just feels better while driving. Well that and to get a suitable setup (2p, IMO) it's difficult to fit on the chassis.

Linc, yeah I agree with you completely, the throttle feel on A123's is a bit of a drop off, like it's not proportional, more like a curve that drops off at the top end. Even 2p like you said doesn't compare with these... it would take a 7s5p A123 pack to match the voltage holding ability of this pack, crazy. Sure you can get alot of 'power' out of a M1 cell, but it's not real world usable, especially for this application.

Metalman, you used to have a 5s2p 7XL setup correct? Funny, same as what I used to use... however, it does have more power than my 1512/3D with a 7s2p pack, call me crazy, but it did, hands down I could wheelie at almost any speed. Must have been a good setup to use the "C rating" aspect of the A123 cells, rather than it's voltage holding ability.


I will be back later with a good moderate power run with the Eagletree, and if I feel like it, I might shoot a short adult film... of the truck of course.

where are you guys buying the G3 packs? i have a brand new 5s 4200mah one for sale and i just want to be sure my price is competitive with whats available out there.

I got my two 3s packs from aircraft-world.com. They are in Japan, but they have very decent shipping rates, and FAST as well, got my packs in 4 business days. $35 for shipping IIRC.

Just confirmed, it is pretty well 85 amps on this pack that it will hold 3.7v/cell... and I'm guessing around 3.45v/cell @ the rated 35C discharge.

I geared down a bit from a 15T pinion (45mph) to a 13T pinion ~40mph.

Oh, and the 1512 motor is getting kinda hot, seriously, after this last run, it was only bearable to hold it for maybe 4 seconds. Damn, I need to get a new temp gun.

Here, I made a red line at 22.2volts on the graph, just to make it easier to see.

Sure did, in my Revo. Have 2 sets of those batteries, and after the Revo 3.3 conversion was gone I put BOTH sets in my Savage, as 10s2p A123. Then my Savage went down to 10s1p A123 (new pack) until one cell died to give it 9s1p. Now my Savage runs 8s 3700mah 20C Lipo and the power is enormous with great runtimes, and MUCH lighter than with A123.

They were BRAND NEW, from the same japanese shop.

Looks like I've written too much. Again, GOOD LUCK to you.:whistle:

Why have you said too much? Just tell me...

You got paranoid about your purchase...

No I'm not... :whistle::neutral:

Does anyone have any information on the cells used in these G3 packs? Are they from China? $100 for 3s 4200mah seems like cheap to me, but maybe they just came up with a good manufacturing process/chemistry that is lower overhead cost than previous gen. lipos.

I am reading on RCGroups, and helifreak that they really do live up to their claim (and obviously I have showed that, at least the 35C aspect), someone did some cycle tests and showed very minimal capacity or performance degradation after something like 60+ cycles. :smile:

I have been charging the packs on my switching programmable power supply(as my 720i has not shown up yet) at 10 amps (2.4C), I have put roughly 6 part cycles (~80% DOD) through them now and I decided I should check each cell voltage, I don't have a balancer, so I used some small wires and set the power supplies current to 10mA... this by far more accurate than my multimeter. After sitting for a day being charged to 4.133v/cell, each cells voltage was 4.11volts, all the same, when not even being balance charged. I guess Hyperion's matching technique is quite good, IMO.

BTW, these packs seem to have a flat discharge curve somewhat like an A123, but not quite as you have about a 1-2 minute drop when at 100% SOC.

ZPB, I don't know if you've seen my reviews on the Classic 20C 4000's, but they are insanely powerful, and have an almost flat discharge as you said about the G3. There is no question the Classics are good for a constant 30C, so I wonder what the G3s are really capable of. These new Hyperion packs are just impressive as hell, and the manufacturing costs must have dropped because the punch to dollar ratio is 3-4 times what it was just 1 or 2 years ago.

Oh yes, I've been charging at 8 amps (2C) and from 60% they charge in 14-15 minutes- We're finally at the point in the hobby where we are getting more out than we are putting in, charge time vs. runtime, and i'm lovin it!

No man, show me your review, i'd love to check it out. What brand were they?

I know! Fast charging is awesome, as that is one of the reasons why I went with A123's to start with up until now. I am LOVING these lipo's, the punch... insane power, I never knew the my little 1512 could push around a Revo with such authority, and vulgarity! They don't even get any warmer than ambient temp it seems (to touch).

I just can't wait until I can charge them up to 100% at 4.2v/cell, as I am doing 4.133v/cell right now, non-balanced. Just to be safe. BTW, it seems like these things have a break in period, I am 100% certain these things are getting more powerful everytime I run them... and I did hear something about break in for first ~20 cycles on RCGroups, and helifreak. Some good graphs there:

http://www.rcgroups.com/forums/showp...04&postcount=1

The Quark 125B is having trouble with these packs though, for teh first 5 minutes, if I brake at speed, the Quark shuts down! :gasp: No brakes! Some kind of over voltage, and glitching is kinda bad too off the charger, and sometimes it doesn't want to even move it's a$$, gotta replug it..

I'll have some updates on Monday with some FULL DOD runs, eagletrees and such. I can also get temps now with the eagletree... I put the temp probe inside the 1512, held in with Mike's Neu end cover.

cheers

Well not reviews per se, but most of what I've written about them is in this thread-
www.rc-monster.com/forum/showthread.php?t=18895

And yes even my packs became stronger for the first 15 runs, and the first run was far and above what my old FP Evo25 4900s could muster, and the Hyperions are so understressed they barely get warm, which is why I feel confident giving them a +10C rating over their own numbers. They just DUMP like a capacitor!

If you are seeing higher temps than you ever have, that's more evidence that your components are REALLY being fed now!

WOW, your maxx is a beast! That is some beautiful craft work on it.

I have to overhaul my Revo to make it race ready for this weekend...

-modify Quark 125 to handle heat, and the extra voltage (add a cap bank), with a no spark mod.

-rearrange the battery mounting

-figure out some kind of motor cooling, as the 1512 gets kinda hot for my liking, but i'm sure it's just me.

Thanks man... it really came alive with BL and lipo, my one do-everything RC. planning a more refined version over the winter
and want to eliminate the trans possibly.

outrunner?

or quad outrunner? one for each wheel? :smile:

I just received a G3 6s35c2600mah pack which I put in my slash with a mmm and a medusa 60mm 1300kv. Geared for 40mph (12/40 mod1), recorded speed whith the eagletree gps was 50mph.

Max recorded amps were 40 (15c) and voltage didn't drop below 3.7v/cell.

Nice man! My experience so far tells me that it takes a little over 20C rates for the voltage to hit 3.7v/cell. And now I received my Hyperion charger in mail yesterday, so I will be testing them out today with a 100% charge. (I have only charged them to roughly 94%, non-balanced, to 4.1v/cell.

These G3 packs really caught my eye!

If anyone is wondering where they are made...

I will be back with some Eagletree results later.

Okay now, I have having trouble getting the data off the eLogger? I just installed the latest firmware and control panel, I can't seem to get it to work!?

Any ideas?