NeuEnergy lipos 3s/2s matched

**domp444** · 11-13-2010, 11:34 PM

What plugs do these have?

**keithbradley** · 11-13-2010, 11:36 PM

They have 8mm bullets, which I will keep, unless you happen to run the same connectors. In that case I will leave them on.

**domp444** · 11-13-2010, 11:38 PM

Thanks! I've got 5.5mm connectors, so you can keep the 8mm. Those are pretty big! I'll let you know later if I'm interested.

**Ksheren** · 11-13-2010, 11:59 PM

Hi Keith,

How much for all of the batteries in the picture.

Pm me please.

Kevin

**keithbradley** · 11-14-2010, 12:19 AM

To anyone interested:
$235 is for four 3s and four 2s. There are six 3s in the pic but two are gone. One went to my son and the other just sold on OSE. I have the turnigy 6s lipos in the pic still but they are a little beat up and I wouldnt sell them for much less than new so I am not listing them.

**britscoot** · 11-14-2010, 12:57 AM

so you have run 1 3s and 1 2s as 5s without problems?

**keithbradley** · 11-14-2010, 01:05 AM

Originally posted by britscoot

so you have run 1 3s and 1 2s as 5s without problems?

Yes. Like I said they are all the same cells. The same exact cells are in the 3s and 2s batteries.
This is an 8s2p setup (four 3s and two 2s)

**keithbradley** · 11-14-2010, 01:11 AM

http://www.youtube.com/watch?v=HTgTXzP_CBw

Thats with those very batteries

http://www.youtube.com/watch?v=FG5G1uPIIXw

Thats with six 3s for 9s2p

If you run bullet connectors you can just plug one battery into another with no aditional connectors to make a high cell count. I have a video of this boat on 10s2p, which is four 3s and four 2s, but its a POV video and the camera falls off.lol Obviously the # of batts Im running is these setups is double what is needed to accomplish the cell count desired, but I was running them 2p for 7200mah.

**JMSCARD** · 11-14-2010, 09:43 AM

Originally posted by keithbradley

Yes. Like I said they are all the same cells. The same exact cells are in the 3s and 2s batteries.
This is an 8s2p setup (four 3s and two 2s)

You can run as many lipos in parallel as you like to up the mah and amp handling, but you should really only run 2 packs in series.... Running 4 packs in series to make 10s is a no no.... Alot of resistance occurs with the wire length., so you shouldn't run 2 3s packs and 2 2s packs all in serial to make 10s 3600mah.... You have probably gotten away with it keith because your setups have been not terribly high amp setups....But running with more then two packs in series is hard on equipment.... Hard on your esc mainly.... Doesn't mean you can't run alot of setups with these batts but I would limit it too 5s 2p (2 2s and 2 3s batts... A 2s and 3s in series then parallel to another 2s and 3s in series)....... and 6s2p (4 3s batts).... Or simple 6s1p, 4s1p setups.....

Just wanted to point out this so people don't read later of the negative effects of running more then two packs in series..... 3 is only recommended in low amp draw situations if at all and running 4 packs in series is asking for trouble.....Like I say Keith you've been luck for sure:) any well experienced guy on here will tell you it's not good practice.... You really should be running 4s, 5s,6s packs for high voltage setups..... Like a 5s and 4s to make 9s1p, and two 5s to make 10s, etc., in theory a boat large enough that you want to run high voltage and in 2p format should be big enough to fit the larger packs too.... Like your old df40 copy... The ideal lipo setup in a larger mono like that is 4 big packs.... For 2p that is:) just wanted to get this out there....

**keithbradley** · 11-14-2010, 11:31 AM

Originally posted by JMSCARD

You can run as many lipos in parallel as you like to up the mah and amp handling, but you should really only run 2 packs in series.... Running 4 packs in series to make 10s is a no no.... Alot of resistance occurs with the wire length., so you shouldn't run 2 3s packs and 2 2s packs all in serial to make 10s 3600mah.... You have probably gotten away with it keith because your setups have been not terribly high amp setups....But running with more then two packs in series is hard on equipment.... Hard on your esc mainly.... Doesn't mean you can't run alot of setups with these batts but I would limit it too 5s 2p (2 2s and 2 3s batts... A 2s and 3s in series then parallel to another 2s and 3s in series)....... and 6s2p (4 3s batts).... Or simple 6s1p, 4s1p setups.....

Just wanted to point out this so people don't read later of the negative effects of running more then two packs in series..... 3 is only recommended in low amp draw situations if at all and running 4 packs in series is asking for trouble.....Like I say Keith you've been luck for sure:) any well experienced guy on here will tell you it's not good practice.... You really should be running 4s, 5s,6s packs for high voltage setups..... Like a 5s and 4s to make 9s1p, and two 5s to make 10s, etc., in theory a boat large enough that you want to run high voltage and in 2p format should be big enough to fit the larger packs too.... Like your old df40 copy... The ideal lipo setup in a larger mono like that is 4 big packs.... For 2p that is:) just wanted to get this out there....

Im not going to get into this arguement again, but that blanket statement is not true. Resistance of wire is relative to wire size and wire length. This does not prohibit running packs in series. You could no doubt create a higher resistance running 2 packs in series than when running 3 packs. If you have long, small wires, this may be a bad idea because you will have added resistance between cells. In many cases, if the wire is short enough, it can actually have LOWER resistance than the traces in the batteries. Im not saying these wires are so short they lower resistance, but I will say you can run these batteries to their rated specs in a 3 battery series no problem. I contacted NeuEnergy in regards to this matter before ever doing this and was advised the same.

JMSCard, I dont mind if you (and Im sure others) start your own battery advising thread, but I dont appreciate a posting like this in my for sale thread. You didnt even state the size of the wire or length yet you draw the conclusion that 2 is ok, 3 are not. I understand your thought process on this but its a simplistic view and should not be posted in someone else's for sale thread. If you are going to state things as a rule make sure you have proof. There is a big difference between stating that in some cases something may be a bad idea, and accusing me of poor practice and saying that I've only been "lucky". I have monitored current, voltage, and temperature of my batteries, wiring, and gear and can say definitively that there has been no problem. I have only ran 10s2p a couple times so I cant draw a conclusion on a 4 pack series but 3 packs in series has not been a problem.

**JMSCARD** · 11-14-2010, 12:55 PM

All i can picture is newbs running 12 s through 6 2s lipos... Lipos are DANGEROUS.... the people who have spoke of not using over 2 packs in serial have had alot more boat experience the you or I.... Cars/truggys/mt have alot less amp then a big boat.... The people who are telling us not to do it Keith often are the one designing the esc's.... They are not working at the local convenience store selling cigs... For some reason I tend to listen to NASA engineers and the like.... I am not trying to stomp on your thread these are good batts... I just have a hard time saying something when this has been talked about time and again by racers and engineers.

They make 4s, 5s, etc packs for a reason....

And Keith you stated these were good for all he way up to 10s setups so you are saying to people it's ok to use 4 different packs in serial as that's the only way you can do it with the packs listed.... Just saying is all...

Also Keith so I don't make a new post, you made a long dissertation on the uses in your thread stating the batts many uses hence why I jumped in.. Maybe you should have left it as just what was for sale....

**keithbradley** · 11-14-2010, 01:22 PM

Originally posted by JMSCARD

All i can picture is newbs running 12 s through 6 2s lipos... Lipos are DANGEROUS.... the people who have spoke of not using over 2 packs in serial have had alot more boat experience the you or I.... Cars/truggys/mt have alot less amp then a big boat.... The people who are telling us not to do it Keith often are the one designing the esc's.... They are not working at the local convenience store selling cigs... For some reason I tend to listen to NASA engineers and the like.... I am not trying to stomp on your thread these are good batts... I just have a hard time saying something when this has been talked about time and again by racers and engineers.

They make 4s, 5s, etc packs for a reason....

Like I said, your statement was simplistic and loosely based off of something you heard. It was in no way made specific to my batteries and should not have been posted in my thread. My advice on running these packs in series is based off of my conversations with Neu tech support and my own experience doing so, time and time again..

If you want to make a general statement about batteries, again...do it in your own thread.

The Cars/MT/Truggies having a lower current draw than boats is a blanket statement as well. Just because something is often true does not make it a rule.

**britscoot** · 11-14-2010, 09:18 PM

keith i will offer $200 for the lipos and run them in a safe manner,
let me know

**Boatman** · 11-14-2010, 09:50 PM

Wait, aren't all packs made up of individual cells wired up in series? So as long as all his cells are infact the same he has truly done nothing wrong. I would buy them and I wanted to but the mustang needs a clutch

NeuEnergy lipos 3s/2s matched

NeuEnergy lipos 3s/2s matched

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