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Old Apr 06, 2012, 08:55 AM
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Norway
Joined Sep 2005
96 Posts
Received the two 7s 5800 mah packs I ordered the other day. Weight and size just as advertised. They came well balanced, my PL-8 used less than 3 minutes to put the packs in storage charge.

Chunky 8 awg wires, but no problem to solder on EC-5 connectors, used 100 watt iron. Changed the split balance taps to 8 pin JST-XH plugs, and noticed that the balance leads was of a lesser quality. Stiffer, and changed colour when bended. Not so bad that it's a problem.

It will ba at least a week before I can report back on how they work out in flight, my 32% pilot decathlon is not finished yet.
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Old Apr 14, 2012, 06:34 AM
Team Hillbilly (UK)
Space Bat's Avatar
United Kingdom, England, Cambs
Joined Oct 2011
1,396 Posts
OK just took delivery of mine....after waiting slightly impatiently for 17 days

First impressions wow they look sweet lipo wrapping is nice and tight, the compactness and weight is far better than the nano's 20g lighter and a few mill's narrower than the nano's

hopefully will put some testing on these this afternoon and get an overall impression of how they perform
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Old Apr 14, 2012, 09:31 AM
222 km/hr Parkjet flyer
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Latvia, Ventspils pilsēta, Ventspils
Joined Jan 2010
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I'm using 3S 1800 25C and 4S 1500 25C compacts and so far ........ I'm a convert.

My T45 50mm EDF screams like a wild banshee on the 1500 4S ..... and I get near 4 mins with charge to spare.
Weight is same as my 3S 1800 standard E-Fly pack ... so no need to alter model.

I haven't been using for long - but so far ... very happy. I cannot say same for Nanotechs ! Now they are a waste of money.
If they continue to perform - I shall be changing to compacts in most models so I have either increased cell count or capacity for same weight.
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Old Apr 14, 2012, 05:48 PM
Team Hillbilly (UK)
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United Kingdom, England, Cambs
Joined Oct 2011
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Initial performance is pretty good - lots of power and seems to have duration and maintains kick rightto the last minute or so when you start to notice there isn't as much in the tank as before....

Now as they are brand new and only one charge - it's hard to say....whether they will be good in the long run...but first impressions are they are as good as the nano's and offer good punch for 5-6 mins before you notice the fall off...

Hopefully they will last more cycles than the nano's which have fallen off more than the stock turnigy blues...
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Last edited by Space Bat; Apr 15, 2012 at 06:55 AM.
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Old Apr 14, 2012, 05:59 PM
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United States, NV, Las Vegas
Joined Nov 2010
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Mine arrived today, after a long 3 week wait. Will try them out on my EF 48" EXP birds tomorrow. Threw them onto my charge to put a storage charge in, and 4/5 balanced perfectly within 6 minutes. The 5th took 15, but still balanced.
They arrived weighing 256g, (257g advertised) and weigh 20g less than my 2650 nanotechs. Not too shabby if they perform well!
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Old Apr 22, 2012, 04:07 PM
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Norway
Joined Sep 2005
96 Posts
I used my set of 5800mAh 7s packs for two cycles yesterday. PL8 reports IR between 2.8 and 3.7 pr cell on the second charge. Those numbers don't tell me much, good or bad?

I have nothing to compare against, but I think I'm happy with the packs. I'll probably buy another set. Not many 7s packs on the market, and the price can't be beat, $145 for a 14s 5800 mAh is really good.
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Old Apr 22, 2012, 06:26 PM
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Rugby, UK
Joined Feb 2007
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Quote:
Originally Posted by authomassen View Post
I used my set of 5800mAh 7s packs for two cycles yesterday. PL8 reports IR between 2.8 and 3.7 pr cell on the second charge. Those numbers don't tell me much, good or bad?
Put the figures into here to find out. Temperature you read IR at is important.

http://www.jj604.com/LiPoTool/

More info at:- http://www.rcgroups.com/forums/showthread.php?t=1577989

Wayne
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Old May 04, 2012, 04:32 AM
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Norway
Joined Sep 2005
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Cycles 4 to 6 on my 5800 7s packs yesterday. IR now down to 1.6 - 1.7 on all cells, giving a true 25C battery according jj604's tool.

I'm very happy with the packs, I'm using about 3800-4000 mAh in 8 minutes in a 32% decathlon with a NEU 2215, and power stays very consistent during the flight. Guessing around 90 to 100 A peaks, so I'm not pushing the packs.

Charging with a PL 8 takes between 15 and 16 minutes when two packs are charged in parallell at 40A current.
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Old May 04, 2012, 05:31 AM
222 km/hr Parkjet flyer
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Latvia, Ventspils pilsēta, Ventspils
Joined Jan 2010
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No disrespect to those who can read and understand IR numbers - but I think I am like most people who cannot and like me really appraise a pack on what it does in the air.

Both my E-Fly 1800 3S and the Zippy Compact 1800 give pretty well same flight performance ... that's speed and run-time .... 50mm EDF. That's just over 6 mins. But of course the compact is slightly smaller and lighter.

I reckon I have about 20 flights on the compacts and still same as day I rec'd them.

The 4S I have ... one gave me a scare when it died a minute into flight ... but all flights after have been fine .. so I put that down to my error in charging.
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Old May 30, 2012, 05:16 AM
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Suomi, Vantaa
Joined Jul 2011
39 Posts
I am considering ordering few 5s 4000Mah Compact packs. How are your Compacts performing compared to other HK brand packs?

Thanks!
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Old May 30, 2012, 03:33 PM
VOLTS > AMPS
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United States, MN, Buffalo
Joined Jul 2011
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Gary and bat, how have they been working out?
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Old May 30, 2012, 07:53 PM
SoCal, Year Round Flying!
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Newport Beach, CA
Joined May 2002
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2 flights last weekend on my 10S 4500compacts. My setup pulls 20C constant.
Good power, no complaints, recharges took 2500-2900mah
IR still dropping, all cells avg 2.10mohms, temp 70F
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Old May 31, 2012, 09:01 AM
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United States, NJ, Clayton
Joined Aug 2010
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Can't wait to see how they last, so far so good.
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Old May 31, 2012, 09:36 AM
Balsa&Tissue
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United States, OR, Beaverton
Joined Jan 2011
2,783 Posts
Quote:
Originally Posted by Shortman View Post
Thanks for the measurements, does the Hyperion do individual cell IR by any chance?

If we were going off 8mOhms per pack divided evenly you would get a true C rating of 32. Or 142 max current draw amps which is awesome
Shortman,

1.6180339887
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Old Jul 01, 2012, 01:13 PM
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Joined Mar 2007
35 Posts
I just started looking into these packs, any more info from those that used them to date? How are they holding up?
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