Right. I dont believe you can just buy Zippy or just Flightmax. It is Zippy Compact, Zippy Flightmax, Zippy K Flightmax, Rhino by Zippy, etc.

Either they changed their specs on this particular battery and didnt update their listing or something else happened.

In my experience, the only thing that is consistent with HK lipolys is their amazing inconsistency.

Originally Posted by flypaper 2

I believe the name Zippy is like Ford, with Flightmax and Flightmax Light like Ford T Bird and FordTaurus. Of course they also make Rhino too.

Gord.

Maybe ... but weights are different .... and also I seem to recall that one Label says Made in Taiwan .... while others I seem to recall say China ...

Nigel

Get a NANO tech. They are low in cost!

Originally Posted by goldsworthy

Get a NANO tech. They are low in cost!

mmmmmmm given the failure of Nanos with all the guys and myself who fly in Ventspils ... Nano's are definitely OFF the menu. Great for first few flights then UGH !!

Nigel

Originally Posted by solentlife

mmmmmmm given the failure of Nanos with all the guys and myself who fly in Ventspils ... Nano's are definitely OFF the menu. Great for first few flights then UGH !!

Nigel

So you are saying that HK's nano-tech batteries are also junk?

What seems to be your problem with them?

I would think that if everyone were having problems with nano-tech batteries, we would hear more about it. Is everyone having problems, or did one person have a problem, and the rest of you are parroting his problems as yours?

Greg

Originally Posted by OldRookie

So you are saying that HK's nano-tech batteries are also junk?

What seems to be your problem with them?

I would think that if everyone were having problems with nano-tech batteries, we would hear more about it. Is everyone having problems, or did one person have a problem, and the rest of you are parroting his problems as yours?

Greg

I wish I knew this as well! I buy NANOs (6cell 65-120 "C") they seem to work ok. These are the high "C" rated ones though. I wonder if some are buying the lower "C" rated ones because they dont wish to spend the money, and asking too much from them?.

I've got a few 3s 500mah 35c Zippy Compacts I use in my Edge 540QQ and so far they have been great. Only have about 20 to 30 cycles on them so time will tell. Out of the box they were perfectly balanced and set to 3.84 volts per cell. Got some 2s 500mah 35c's scheduled for delivery today for my Crack Yak. I'll check them out tonight and see how they look out of the box. So far I haven't had any issues but.......I'm pretty easy on my batteries. Typically I only fly them down to about 60 to 70% with resting voltage being between 3.75 to 3.8v per cell. I think this goes a long way in increasing the life of cheaper batteries.

Originally Posted by goldsworthy

I wish I knew this as well! I buy NANOs (6cell 65-120 "C") they seem to work ok. These are the high "C" rated ones though. I wonder if some are buying the lower "C" rated ones because they dont wish to spend the money, and asking too much from them?.

Have you tested your NANOs at 120C? If so, please provide the discharge graphs.

I suggest Sky lipos from hobbypartz. I started off with Zipps as well, but they got puffy and stopped giving full power before long. Since then all my packs are Sky and/or Gens Ace. Barely any puffing and have lasted several years.

Originally Posted by tacx

Just think how bad your going to feel when those expensive ones fail

I've got some Hyperions that are on their 4th season and no signs of failure, swelling, etc. All batteries have a chance for failure of course but I've been VERY happy with Hyperions and the one thing I have gotten from them is customer service... something you don't get from these budget websites. YMMV.

I have a boat load of zippys in the last 5years had almost no issues and some of my flying buddies say the same, wonder if you got used ones on accident?

Originally Posted by Ohmic

Have you tested your NANOs at 120C? If so, please provide the discharge graphs.

No I have not tested these they are still new in the box and have the base storage charge. The item I will be using them in requires a 45C rated battery maximum rated. I believe buying a much higher C rated battery then needed puts less stress on a battery and helps it last longer. I think if the NANOs can provide me with just the 65C rating I should be happy. I will report my results when I have them. I think these NANOs have to be at least a little better than a zippy. I think some of these bad reviews on all makes of lipos come from people that buy a lower C rated battery to save money, then push the battery far beyond what its designs are. I feel you should always spend a little more and get a margin more then is required for your set up.

I am harvesting cells from 7 Turnigy 3S 5000 40C packs and 56 Zippy Flightmax 5800 3S packs. While some are crash damaged most cells I am tossing are due to cells that just failed for no visible reason.
I have been harvesting cells and building new "true C matched packs" for a couple weekends/evenings so far, another week or two to go. [image of me panting... with a HUGE smile on my face]
...
BUT
... This past two weekends I have had 2 other supposably high end packs given to me with a name starting with H. One has a very weak cell with high IR, the other has a cell with a tab that was never soldered to the PCB.
I have seen all other major brands with "issues" that should not have happened but never the quantity equal to the Turnigy and Flightmax packs I am bashing lately.

Rick

You are an incredibly patient and fastidious man Rick.

Mark