helimatt Elite Veteran Location: Lafayette, IN
| I've looked at A123 and for me I can't stand the added weight to get a similar power setup.
My 6S packs have been an eclectic assortment: FlightPower Evo 20 4900mAh, FP Evo25 5000mAh, ThunderPower Xtreme 5000mAh (old type), TP Xtreme V2 5000mAh, Airthunder, KongPower 25C 5000mAh, and a PolyQuest (Enerland) 20C 5000mAh, and finally now a Zippy-H 20C 5000mAh pack from Hobby City.
The KongPower/AirThunder packs are heavy, but held up the longest (both have approximately 80 flights on them now) but are showing less punch. The TP V1 and V2 were very good when new (wow!) but died off quickly in about 20 flights. The Enerland pack was better, about 40 cycles before it started to show deterioration. Caveat- I got that pack early in my flying career and the demands have increased as I've learned more 3D type flying. The FlightPower packs also about 30 cycles nd they were very tired. Problem is that the packs seem strong at first but seem to drop to like 80% of their original punch, then hold that level for a long while. They are good for sport or mild 3D flying at that point- bogging during tick-tocks, etc.
The TP packs are way out of balance after a flight. The Kong/Airthunders only need a little balancing.
I have not been very scientific- in retrospect I wish I had kept logs. I have flown several motors, 600L (not bad) another 600L (not as good as the first one for some reason), 600XL (shaft sheared on ~10th flight, but it had decent power), ZPower Z30A was powerful, but short-lived, maybe a fluke; it was my favorite that I've tried.
In all these the packs will get HOT in 5 minutes unless I really take it easy. I don't fly extreme 3D (not that good), but do like to bang it around some. I am sure I am not exceeding the advertised pack capablities, but they sure dont like what they are getting. Others have logged 100-110A spikes- and I average 42A in a flight (~3500-3800mAh put back after a 5 minute flight, timed).
Probably I should have kept flights to 4 minutes and tried to keep the temps lower.
Summary- if you want to fly much 3D, get an 8S or higher setup, or fly short flights and use KongPower or AirThunder packs.
Hey that Zippy-H is only $150 shipped, and now has 10 cycles, its doing well, and doesn't get nearly as hot as the other packs= just warm as it should be.
These are just my experiences as always your mileage may vary.
Never, ever, ever, ever give up. |