New lipos from Hobbyking!

[neptronix]

Guys; this is so weird.
I had a dream last night that hobbyking was finally offering NMC cells in cylindrical form, 5-10C and beat the pants out of the li-co lipo cells, and i was about to let the forum know after doing some testing on them and giving my seal of approval, then i woke up.. typical cliffhanger.

So i went to check hobbyking today, and lookie here:

http://www.hobbyking.com/hobbyking/store/__545__85__LiPo_LiFe_NiMH_Battery-ZIPPY_Compact.html

25C lipos that are a smidge lighter and notably smaller than the 15C Zippy Lipos ( *were* the wHr/KG champions before these )

oh, and hyperion 14s charger guys.. it's your lucky day, finally HK sells 7S Lipo!

http://www.hobbyking.com/hobbyking/store/__21374__ZIPPY_Compact_5000mAh_7S_25C_Lipo_Pack.html
http://www.hobbyking.com/hobbyking/store/__21384__ZIPPY_Compact_5800mAh_7S_25C_Lipo_Pack.html

Price is a little higher, and shipping is only international right now. But if you want to jam the highest amount of amp hours into a limited space, these are exactly what you are looking for.


standard safety disclaimer: RC li-co Lipo is not abuse tolerant and there is an ultra-rare, but real chance that a defective pack could self-ignite within the first cycle. There is also a real chance that if you mis-treat these, you could also have a massive RC Lipo fire. For the love of god, ( and your house/apartment/dwelling ), please read up and learn what you're getting into with this chemistry before you buy, and don't skimp on the charging hardware.

Brought to you by the safe lipo usage committee(tm)

[nonlineartom]

Ha, loving the LiPo disclaimer there man. You should add "presume this battery will burn your house down, blow off your testicles and steal your wife"

respect and fear the ancient god LiPo and pray he is merciful.

[neptronix]

Ha, loving the LiPo disclaimer there man. You should add "presume this battery will burn your house down, blow off your testicles and steal your wife"

respect and fear the ancient god LiPo and pray he is merciful.

No kidding.
For additional scare factor, here's how "safe" a 6s 5AH battery is when abused:



( are the people who aren't willing to invest the time/energy/thought into using this safely scared off yet? )

[cwah]

Damn!! I've seen that too late. I've already purchased my old zippy pack

[nonlineartom]

When riding the trike I have 12 6S packs less than an inch from my gentlemans..... This stuff scares me.

[neptronix]

Damn!! I've seen that too late. I've already purchased my old zippy pack

Don't feel too bad. I bought $600 worth ( 12A/30AH ) of Zippy 15C lipos a little over a month ago.

[mvly]

The only question is are these better in terms of weight size and charge cycle when compared to the nano tech? So far it looks about the same. The 10s 5800mah is longer than the nanotech 10s 5000mah. It also weighs more. Since i is a zippy, i suspect it is good for 150 cycles using the normal 3.0v to 4.2v. Some one willing to test these out?

[neptronix]

The only question is are these better in terms of weight size and charge cycle when compared to the nano tech? So far it looks about the same. The 10s 5800mah is longer than the nanotech 10s 5000mah. It also weighs more. Since i is a zippy, i suspect it is good for 150 cycles using the normal 3.0v to 4.2v. Some one willing to test these out?

Well, you are comparing a 5800mAh to 5000mAh pack. The 800mAh is an extra 14% more capacity, and the weight / size isn't much more, so that's pretty good. You can do the math and i know the Zippy will come ahead, even if Zippy lies about the capacity a little, IE if it only delivers 5500mAh in real life.

These lipos are rated for 300 cycles and people on this forum have squeezed 500-600 cycles out of the zippy packs, the reason the nanotech is probably claimed to have longer cycle life is due to it's higher discharge rate, it can handle more abuse, thus it is less likely to die earlier. ( you could say the same thing about a 40C pack being used at a 20C rate ).
There is no evidence that nanotech has a longer cycle life, i guess they have not been around long enough to verify that claim.

So it's up to you which you chose.

[mvly]

The only question is are these better in terms of weight size and charge cycle when compared to the nano tech? So far it looks about the same. The 10s 5800mah is longer than the nanotech 10s 5000mah. It also weighs more. Since i is a zippy, i suspect it is good for 150 cycles using the normal 3.0v to 4.2v. Some one willing to test these out?

Well, you are comparing a 5800mAh to 5000mAh pack. The 800mAh is an extra 14% more capacity, and the weight / size isn't much more, so that's pretty good. You can do the math and i know the Zippy will come ahead, even if Zippy lies about the capacity a little, IE if it only delivers 5500mAh in real life.

These lipos are rated for 300 cycles and people on this forum have squeezed 500-600 cycles out of the zippy packs, the reason the nanotech is probably claimed to have longer cycle life is due to it's higher discharge rate, it can handle more abuse, thus it is less likely to die earlier. ( you could say the same thing about a 40C pack being used at a 20C rate ).
There is no evidence that nanotech has a longer cycle life, i guess they have not been around long enough to verify that claim.

So it's up to you which you chose.

Since I already have the nanotech, I will leave the testing of these new cells to you neptronix. : )

I am hoping I can squeeze 1000 cycles out of my nanotech. Been balance charging then every time from 3.6V to 4.1V and only running 1.5C. So far, ~80 cycles and no sign of degradation.

[neptronix]

Nice charging & useage regimen, mvly. Maybe i will eat my words about the nanotech cycle life
The 25C nanotech is rather affordable.

But for weight/size weenies like me, i think these are really the champions.

I want a >100 mile pack and NMC still sucks and/or is too expensive!

[NeilP]

These new Zippys...the NIMh ones, what is the voltage regime for these...max/min voltage? charge current/characteristics , any "cliff' or a gentle discharge graph?


Regarding nano the life cycles ..well i started a response here but then was risking hijacking this thread..so posted a new one.
Am up to 220 cycles now on 20s4p pack..but capacity seems to be dropping off..comments to the thread below

viewtopic.php?f=14&t=37189

[NeilP]

But for weight/size weenies like me, i think these are really the champions.

Which ones do you mean? the nano tech or the new Zippys? I reckon the new Zippys have the edge

I just compared the new ones to the nano tech and they are only fractionally bigger and heavier than the same ( ok similar) spec Nano Tech pack.

Just looking and I reckon they have the edge on the nano tech. Looking at these packs

http://www.hobbyking.com/hobbyking/stor ... FPack.html

http://www.hobbyking.com/hobbyking/stor ... FPack.html


I make a 20s4p pack of them to be 6% heavier with 9% greater volume but 16% more capacity. I should have gone with these for my next project not the nano techs I just ordered...And it is all your fault Netp that I just ordered more nano techs..all your fault because you did not tell us about them early enough ...all your fault nothing to do with me of course

[Racer_X]

Sounds very promising for ease of Use with 48v systems. Now my question is how would you balance charge these?
My iCharger has 10s then goes straight down to 6s -5s 4s 3s 2s.
Don't tell me I would have to get the Hyperion EOS 1420i NET3 14s Balance Charger...
I mean Is there any way I can balance charge it with my iCharger 1010B+, is there some kind of Balance Adapters I can get?

[NeilP]

You may need to make up an adapter your self, but the 10s charger will do 7s.

A brief search on hobby king does not bring up such a thing as 7s plugs ( 8 pin) or extensions so i guess 6s (7Pin) plugs is the largest they do.
I imagine the 7s packs have two plugs, like the 10s packs do...so a 4 and a 3.

just make an adapter up with some vero board .
probably a matter of getting a spare plug that fits into the charger and wiring that to the vero board, then fitting the relevant matching sockets for what ever is fitted to the 7s pack

edit.
yea the 7s pack shows two balance plugs





http://www.progressiverc.com/thunderpow ... board.html

[c-roots@hotmail.com]

Two days ago I ordered 6 x 5S1P and 3 x 4S1P @ 5000 mAh of Turnigy LiPo s @ 20C to make a 14s3p pack. I also grabbed a single 14s Hyperion charger for 129.

I'm kicking , myself now for not waiting for these 7s to come out! Danm you neptronix for creating them with your dream and giving my buyer's remorse! I would have gladly payed 1$ extra per cell for 5C more, and a smaller size and less balance cable mega adapter building, but where's the fun in that...

Its OK though, I like my man-knitting (soldering)

Thanks for the heads up on these new Lipos!

Chris

[chroot]

I have iCharger 3010B can do 1s to 10s.

[Racer_X]

Thanks NeilP for the info

yea the 7s pack shows two balance plugs

Then I know my iCharger will work with those batteries.

[Arlo1]

Hmmmmm

[NeilP]

Thanks NeilP for the info

yea the 7s pack shows two balance plugs

Then I know my iCharger will work with those batteries.

Well yes, it and any of them will charge how ever many cells you give them, as long as the balance leads are connected in the correct order and the number is set in the software of the charger

[Sacman]

Guys;

oh, and hyperion 14s charger guys.. it's your lucky day, finally HK sells 7S Lipo!

http://www.hobbyking.com/hobbyking/store/__21374__ZIPPY_Compact_5000mAh_7S_25C_Lipo_Pack.html
http://www.hobbyking.com/hobbyking/store/__21384__ZIPPY_Compact_5800mAh_7S_25C_Lipo_Pack.html

Price is a little higher, and shipping is only international right now. But if you want to jam the highest amount of amp hours into a limited space, these are exactly what you are looking for.

Nice find David, at first look it seems like a better battery option for us guys with the Hyperion 1420i that take full advantage of its ability to charge/balance upto 14s packs. I considered it for a while to upgrage from my 12s packs but a closer look at the battery's balance plugs shows it has two balance plugs rather than just one. It has two separte JST-XH plugs for 4s and 3s rather than just one 7s plug to go directly into the Hyperion.

[neptronix]

I make a 20s4p pack of them to be 6% heavier with 9% greater volume but 16% more capacity. I should have gone with these for my next project not the nano techs I just ordered...And it is all your fault Netp that I just ordered more nano techs..all your fault because you did not tell us about them early enough ...all your fault nothing to do with me of course

lol, i'll tell my subconscious to dream about hobbyking's battery offerings more often.

[neptronix]

Nice find David, at first look it seems like a better battery option for us guys with the Hyperion 1420i that take full advantage of its ability to charge/balance upto 14s packs. I considered it for a while to upgrage from my 12s packs but a closer look at the battery's balance plugs shows it has two balance plugs rather than just one. It has two separte JST-XH plugs for 4s and 3s rather than just one 7s plug to go directly into the Hyperion.

Damnit, you guys are right That is a real bummer.
I searched a bit for a 4S + 3S adapter, and no such thing exists.
On the iCharger 1010b+, you can possibly pull the 7s charging off, but that's not too helpful is it.

I can't even find 7S JST balance leads on the web .. looks like this is even super uncommon in the RC world.

[keysersoze310]

Nice find David, at first look it seems like a better battery option for us guys with the Hyperion 1420i that take full advantage of its ability to charge/balance upto 14s packs. I considered it for a while to upgrage from my 12s packs but a closer look at the battery's balance plugs shows it has two balance plugs rather than just one. It has two separte JST-XH plugs for 4s and 3s rather than just one 7s plug to go directly into the Hyperion.

Damnit, you guys are right That is a real bummer.
I searched a bit for a 4S + 3S adapter, and no such thing exists.
On the iCharger 1010b+, you can possibly pull the 7s charging off, but that's not too helpful is it.

I can't even find 7S JST balance leads on the web .. looks like this is even super uncommon in the RC world.

I think this is the 7S JST connector you're looking for:
http://search.digikey.com/us/en/product ... -ND/923773

[psycholist]

Nice find keysersoze! Thanks!

[keysersoze310]

Nice find keysersoze! Thanks!

No problem =)

This thread bummed me out a little since I just received some 6S 8AH batteries yesterday (ok, not that bummed, haha). I did a very quick and dirty comparison of the high capacity compact batteries to see if they were really that much more compact than my 6S 8AH:

Lipo Compact Comparison.jpg

(122.6 KiB) Downloaded 2 times

Conclusions - Ok, so the new compact batteries are mostly between 14% and 19"% more compact than my 6S8AH batteries, not to shabby. They also weigh less for their capacity, around 10-14%. Cost is about the same compared to the 8AH batteries, but the cheap 4S1P hardcase is still by far the most cost effective.

I've attached my excel sheet in case anyone wants to use it/modify it/ add to it