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Jan 14, 2013, 11:30 PM
Registered User
Will be nice to see your results on the Dinogy packs.

Mark sent me a 3S 2250mAh a few months ago and so far it's the real deal. After 3-1/2 months and 23 discharges all cells are still at 4mOhm as measured by my 306B. Hoping it'll still be doing well after it is more than a year old and over 100 discharges.

Mark
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Jan 15, 2013, 01:31 PM
aka JetMan Joe
MCSGUY's Avatar
Good Feedback, it's nice to have high quality packs available at reasonable prices.
Jan 15, 2013, 01:45 PM
Dude, I do fly all day long!
rcalldaylong's Avatar
Quote:
Originally Posted by mrforsyth
Will be nice to see your results on the Dinogy packs.

Mark sent me a 3S 2250mAh a few months ago and so far it's the real deal. After 3-1/2 months and 23 discharges all cells are still at 4mOhm as measured by my 306B. Hoping it'll still be doing well after it is more than a year old and over 100 discharges.

Mark
Mark,

what kind of amps are you pulling from these packs?
Jan 19, 2013, 05:46 PM
Battery Puffer
Im glad to see the packs made it to you Joe. I look forward to your testing. I wanted to answer a question from an earlier post about sending special packs. I am just a distributor of these packs and have no testing equipment other that my TP 820. I want the results giving hear to be exactley what you would get from the packs you buy from me and test for yourself. I believe it does no good to stack the deck if you want your customers to stay your customers.

Mark
Jan 19, 2013, 05:51 PM
Registered User
Quote:
Originally Posted by rcalldaylong
Mark,

what kind of amps are you pulling from these packs?
Sorry that I missed your query earlier.

I don't have an in-flight logger but I run them wide open for ~4 minutes in my PZ Gunfighter and this takes me to about 80% DOD. So, doing quick math, I'm running them at ~12C continuous, or about 27 amps.

Mark
Jan 19, 2013, 08:30 PM
aka JetMan Joe
MCSGUY's Avatar
Quote:
Originally Posted by MarkF
Im glad to see the packs made it to you Joe. I look forward to your testing. I wanted to answer a question from an earlier post about sending special packs. I am just a distributor of these packs and have no testing equipment other that my TP 820. I want the results giving hear to be exactley what you would get from the packs you buy from me and test for yourself. I believe it does no good to stack the deck if you want your customers to stay your customers.

Mark
Yep, you sent me off the shelf brand new packs with a couple three light duty break in cycles on them. John at Revolectrix recently posted a good case that the newest packs don't need the break in process. I guess better safe then sorry.
Jan 20, 2013, 06:00 PM
C-Main Champ
djmoose's Avatar
Awesome stuff MCSGUY. Is there any chance you recorded your findings at the lower amp runs? I know you said that they all performed about the same, but I like seeing numbers. If you don't, it's all good. I was curious on the different temps across these packs at 75-100A.

Thanks so much for this!
Jan 20, 2013, 06:34 PM
aka JetMan Joe
MCSGUY's Avatar
Thanks for the interest, here's the whole series:
Jan 20, 2013, 07:57 PM
Battery Puffer
This is the best testing I've ever seen. Good job MCSGUY. This to me trully shows a packs performance. It looks like revo packs are the winner to me next to TP.

Mark
Jan 20, 2013, 10:14 PM
aka JetMan Joe
MCSGUY's Avatar
Thanks Mark, I can't wait to get started on the Dynamic load testing, that should be more revealing since I will also be recording the maximum static thrust put on the jet plus a running tally of the amps and voltage for 60 second at WOT.
Jan 28, 2013, 10:24 PM
3DHOG
jcdfrd's Avatar
wow this is great info!!!!
Jan 28, 2013, 10:40 PM
aka JetMan Joe
MCSGUY's Avatar
Alot of work but it's worth it to know the real scoop. I also believe the dynamic testing will be very revealing.
Jan 29, 2013, 10:23 AM
HAL... Open the damn doors!
jfetter's Avatar
Nice work, great testing methodology!

I have 2 comments, first, having Thunder Power packs with 250+ cycles and still going strong, you should try and do the same testing after extended usage as value only comes into play after you use them (if some fail on use # 20, is there still value?) and second, you should re-calculate the number with the TP interconnect changed to 6mm, Thunder Power only puts that there for shipping purposes and if not there, the numbers would be better (though you can blame them for the 4mm bullets melting in the first place for sure!). Nice job...

Jack
Jan 29, 2013, 11:02 AM
aka JetMan Joe
MCSGUY's Avatar
Thanks Jack, you're absolutely correct. Repeat testing down the road is essential.

Your right about the 6mm also. I did not discover the flaw until the 180A test so it's the only one taken with the 6mm connector and I noticed a ~5% increase in output after I changed the connector.
Jan 29, 2013, 12:48 PM
HAL... Open the damn doors!
jfetter's Avatar
Quote:
Originally Posted by MCSGUY
Thanks Jack, you're absolutely correct. Repeat testing down the road is essential.

Your right about the 6mm also. I did not discover the flaw until the 180A test so it's the only one taken with the 6mm connector and I noticed a ~5% increase in output after I changed the connector.
I am going to e-mail Bob Burns @ TP and mention the interconnect was an issue and see what he says. I know why they do it and it can come in handy when shipping but upping their hardware to 6mm can't hurt either. I'll be watching this testing with interest!

Jack


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