just how important is it for the cells to be accurately balanced ?

[video200]

just got 2 new turnigy 4s 40c 5000 batteries. but 1 of the batteries have 2 cells at 4.22V and 2 cells at 4.01V after 6 hours on the charger :confused2:
do it realy make much of a difference ?

charger is a hyperion EOS 0606i

[Brushless55]

That much difference could be an issue?
but at the same time I would not be afraid to run them, but I would only let the cells goto 3.8v and then charge them again and see who they balance
you could also do a balance on the pack and see if it brings the cells together

[video200]

the 2 cells that is low is up to 4.02 now after close to 7 hours on the charger\balancer. so i guess there is hope.
think il let it charge til bedtime and try to run them in the morning and se how it works.

[Brushless55]

I would take it off the charge setting and just do a balance on the pack
the issue is the charger not the battery

[video200]

not shure the 0606 have that option to only balance. at the moment it is just trying to get the voltage up to 4.22V on all 4 cells it seems.

[kookie_guy]

on the hyperion if you scroll to the balance menu, and start a charge like you would from the main menu, it goes into a balance charge mode.

[video200]

ones i started a charge and have the balancer connected it wil balance the battery. i managed to get it to "accepted" levels for the charger (4.17 4.18 4.22 and 4.22)
been out for a run now and is recharging so hopfully that was all it needed. ones i hooked the battery up to the charger all the cells was within 0.01V of eachother (3.87-.388 V)

[Heath M]

If it took 7 hrs to charge, I'd say it is a problem with the charger as well,

[video200]

took about 7 hours to charge\balance THAT battery. the other identical took about 30 minutes to do the same job.

given the batteries a few runs now and it take shorter time to balance that battery but still it take 3-4 times as long as the other one

[Joern Markset]

I have 4 new turnigy acting the same way.
I Just throwed them in the garbage container and bought some good stuff. (hyperion)

[video200]

well so far i have about 20 turnigy\zippy batteries and this is the first problem i had.
i would love to be able to swap them for "the good stuff" but the money is not there so im stuck with the ones i can aford atleast til i win the lottery :D

[Brushless55]

I have 4 new turnigy acting the same way.
I Just throwed them in the garbage container and bought some good stuff. (hyperion)

I have Hyperions for my 3D planes and I will take my cheap Turnigy packs any day over the Hyperions :rockon2:
I get more power (better vertical performance) from my Turnigies

[video200]

i have never had hyperion batteries so i dont know how they preform.
i do however know the simple fact of price.
from rclipos.com G3-VX5000-4S 35C/45C $151.95
from HK.de Turnigy 5000mAh 4S 40C/50C $53.16
rclipos have free shipping. HK do not.

[Brushless55]

i have never had hyperion batteries so i dont know how they preform.
i do however know the simple fact of price.
from rclipos.com G3-VX5000-4S 35C/45C $151.95
from HK.de Turnigy 5000mAh 4S 40C/50C $53.16
rclipos have free shipping. HK do not.

I think we know why they have free shipping :doh:
almost 100 bucks difference for each pack

[LiPo Power]

...and are they made in Japan ??? Didn't think so...







I have 4 new turnigy acting the same way.
I Just throwed them in the garbage container and bought some good stuff. (hyperion)

[Alfa Spirit]

When you are charging/balancing a battery with one, two or three cells low voltage the charging current is very low around 0,1A.
This takes a long time that' s normal.
At the end of charging/balancing cells have the same voltage.

[Brushless55]

When you are charging/balancing a battery with one, two or three cells low voltage the charging current is very low around 0,1A.
This takes a long time that' s normal.
At the end of charging/balancing cells have the same voltage.

you don't need to balance a one cell :rofl:

[video200]

I think we know why they have free shipping :doh:
almost 100 bucks difference for each pack

and even with $100 difference rclipos is one of the cheap suplyers for hyperion batteries and i dont think that it is rclipos who make a bundle of money on this

[BHChieftain]

I have a hyperion duo charger, and I have 4 turnigy packs. 3 of the 4 packs takes 20min to charge (starting from store partial charge), one of the 4 takes 75+min. The difference is due to the balancer cycle...

I also have a problem when I run that pack as it seems to drain at a different rate than the other packs (ie, I'll unexpectedly hit LVC when that battery is in the mix).

On the cost, one thing to consider is hyperion g3 batteries can be charged at *5C*, so you actually need fewer batteries if you can get your charger out in the field. Also, about 25% of the turnigy packs I recieve from HK are DOA on arrival. So when you factor that in, the cost gap closes quite a bit...

I have mostly hyperion packs now and do not regret it. Never had any issues with them.

Chief

[video200]

so far HK batteries been good to me. have about 20 packs here ( zippy,turnigy and rino) and so far this is the first battery that have been an isshue with.
after having 3 runs with the batteries it seems like the one that was "off" os getting closer and closer to the other cells but is still a little off.

when i connsider that a 4s 5000 mah 35c hyperion chost me $238 + postage here in norway the math is simple for me. i just cant aford to pay about $500 for 2 batteries

[Brushless55]

I have a hyperion duo charger, and I have 4 turnigy packs. 3 of the 4 packs takes 20min to charge (starting from store partial charge), one of the 4 takes 75+min. The difference is due to the balancer cycle...

I also have a problem when I run that pack as it seems to drain at a different rate than the other packs (ie, I'll unexpectedly hit LVC when that battery is in the mix).

On the cost, one thing to consider is hyperion g3 batteries can be charged at *5C*, so you actually need fewer batteries if you can get your charger out in the field. Also, about 25% of the turnigy packs I recieve from HK are DOA on arrival. So when you factor that in, the cost gap closes quite a bit..
I have mostly hyperion packs now and do not regret it. Never had any issues with them.

Chief

To me not much of a factor, because most Lipo packs can be charged at more than 1c!
you can easily charge any lipo at 2c and 3c without harm :thumbup1:
and keep in mind to keep with the 5c charge rate you will need a big $$ charger to keep up with the expensive packs
I will take my $25 Turningy packs and my $19 Turningy charges and charge 3 packs at the same time and be saving big bucks at the field :beerchug:
so I can have my 20 Turnigy packs at the field vs about 6 or 7 of the higher priced packs
Hmmmmm, I think I will have more runs this way, and I do :rockon2:

[sonny]

why can't you just chage your lipo's on a standard charger set at the proper amps?

[Brushless55]

why can't you just chage your lipo's on a standard charger set at the proper amps?

If your talking about a Nimh charger, the charger will push more than 4.2v per cell and hurt the pack and catch fire

[video200]

not shure what you meen with using a standard charger.
my charger had problems with 2 cells that diddent whant to balance propparly.

[Greek75]

Can I use an onyx 240 charger to charge 3s 5000 mah 40c turnigys?? It is a double charger and can charge at .8,3,5 amps.. Would that be ok on 3 amps or do I need yet another charger... I've been into big gas boats many years ago, and am new to lipos.. The charger does have the option of nimh or nicad... Thanks for dealing with a Newbie to fe...

[Alexgar]

i run 3s2p in series and charge them a a 6s and if one cell is low it will charge that one cell at .1 or .2 for 2-4 hours rut low and behold they will balance if your patient i know its inconvient but thats why i have 3 sets for that boat charge the night before and have a couple of runs

[video200]

Can I use an onyx 240 charger to charge 3s 5000 mah 40c turnigys?? It is a double charger and can charge at .8,3,5 amps.. Would that be ok on 3 amps or do I need yet another charger... I've been into big gas boats many years ago, and am new to lipos.. The charger does have the option of nimh or nicad... Thanks for dealing with a Newbie to fe...

from what i read the onyx 240 do NOT have suport for lipo. so you would need a new charger.
take it that this is your charger ? http://www.duratrax.com/caraccys/dtxp4240.html

[Greek75]

Yep. That was the charger. Guess it's going back today... I would love to charge 3sp2p in parallel on each side of a double charger... Is that even possible for a lipo charger? Should I keep the onyx charger just for nimh, or should is there a diverse enough charger that would charge both lipos and nimh.. Thanks for dealing with these questions, but lipos weren't around 20 years ago and. Getting my nine year old girls into fe like I was....

[video200]

most mordern lipo chargers wil be able to charge your nihm\nicd batteries without a problem. i have never charged in paralel. but i think it is possible and there should be some treads on how to do just that on the forum if you search a little for it

[egneg]

This will meet all your needs but it's quite pricey. I have an older model and it's the best charger I have ever owned - much faster charge times.

http://www.offshoreelectrics.com/proddetail.php?prod=emp-EOS720DUO

[Greek75]

Thanks, great forum... After much reading, I figured that would be the best charger... I know I'm going to get slammed for this, but on an impulse buy a few weeks ago I bought my girls the Spartan to see if I could get them interested in fe.... So far they are beginning to like it and 25-30 is fast enough for them for now... I own a large machine shop and did the mods to make it run cool, same setup as jprimani... I just moded stock rudder instead of making one.. I feel bad for everyone else who bought that boat and was misled... I can get an 8 min runtime, I'm guessing at mid 40's, he gpsd his at 48, so I might be getting the same... I know that's too much for plastic, but it's a good toy for my kids... I now have my itch back, and am going to build a proper FE... Thank's all for the info. I'll start a new post when I decide which boat to start with... I would like to be around 30-40 inch, hit mid sixties, decent runtimes, and not start from stripped hull...any suggestions... Please feel free to move this post to the appropriate place.... Thanks again, and I'm sure that I'll be tapping into the vast knowledge on this forum.... Please be nice, I know, the Spartan is a toy....

P.S. If anyone needs anything machined, I'm in Florida, and will be glad to help...

[video200]

why woul you be slammed for getting a spartan ?
from what i understand the spartan is a ok boat. it have its isshues on 6S but from what i understand it is a realy good one for 4-5s.

if you whant 30-40" mid 60`s and runtimes i hope you have a nice and thick wallet sinse things start to chost when it goes fast.
if you say 30-35" and 45-55 mph you can have decent runtimes for a ok price :)

[hazegry]

Greek I started out with a bladerunner now thats funny. I sent you some info and a chart that shows what batt's use the same balance plugs.