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Old 01-08-2009, 11:14 PM   #16
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My .02 on Zippys! As most everyone states, Zippy's work well when it comes down to runtime, being balanced, performance, etc. But like a few others before me stated, Zippy's are not nearly constructed as well as the higher end batts. They are worth the price and then some, but you have to protect them with at least using velcro (not just the straps) to keep them from sliding around in the battery tray. One layer on the bottom of the tray and the other on the bottom of the battery.

I have broken 3 Zippy's because my idiot self just used the 3 straps to secure the batts. Now I use the industrial strength Velcro brand from Home Depot along with some Dubro foam at the front of my battery tray between the battery and battery tray. The foam helps protect the battery when you don't clear the triple and nose into the jump.

Almost forgot, an alternative to Zippy's are the Rhino packs which are also sold by www.hobbycity.com. On the label they are stated as Zippy's, but they are built better. My bro and I have taken apart 3 Zippy's and 1 Rhino and compared the construction. Rhino are actually built better and cost the same.
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Old 01-09-2009, 05:32 AM   #17
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Zippy lipos all the way. They may not be constructed or wrapped as well but at 1/2 to 1/3 the cost of other brands I can live with that. What I care about it performance and from what I've seen they are VERY under-rated at 20c. I've run Maxamps 20c packs in the same setups and they always got warm and a few times have swollen on me. The Zippy has noticably more power and don't seem to be even slightly strained to run HV systems.
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Old 01-09-2009, 09:02 AM   #18
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Go to the website and read the reports below the batteries. Looks like airplane guys have known about this for a while. The thing about the airplanes, is the high amp draw can go on for several minutes, unlike us where it's relatively brief. So we should see pretty impressive burst performance, with pretty good duration performance, even though they are far cheaper.

I started looking into the more expensive batteries, because I noticed excess wear on one side of my chassis.(too much weight on the battery side) I've discovered that the Losi 4S 5000 hard pack, seems to carry about 130 grams extra weight from the hard case.(compared to other similar batteries that come naked) That got me digging and comparing battery weights, capacity, C rating etc. I found everything from a $60 Rhino that weight about 400 grams, to a Heli high performance pack that weighs 70 grams less, has the same capacity, but it costs $130!

This is a great time to get into electric conversions; so much available and its all new territory! Gotta love being on the cutting edge!
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Old 01-09-2009, 10:24 AM   #19
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400g? That's got to be pretty low mah...
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Old 01-09-2009, 10:48 AM   #20
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You would be lucky to find zippy-r in stock. If you find them in stock reply back and Ill buy one.

Anyways, I let my buddies at the track test out my new 6s 5000 zippy and then said it had more punch then the 6s neu energy packs they run.
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Old 01-09-2009, 11:04 AM   #21
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Quote:
400g? That's got to be pretty low mah...
Yup, 3700, but my heats are only 5 minutes, and often, the main is 7 minutes. So if I wanted a better handling car, and I know I don't have to make 15+ minutes of runtime, then the very light battery would be ideal.

Here's the cheap one:

http://www.hobbycity.com/hobbycity/s...0C_Lipoly_Pack

and the high performance one:

http://www.helidirect.com/product_in...oducts_id=6180

I want more options for different conditions. I'll hang on to the heavy/long duration pack for my truggy conversion and practice. But I def plan to run the much lighter batteries.
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Old 01-09-2009, 12:29 PM   #22
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From my research the general concensus is the Zippy H packs are well sufficient. I have seen quite a few posts that the R's just ask for too high of numbers and the batteries have been less reliable than the "H". 25c is great I believe.

Lets talk battery weights. What vehicle are you running and what weight hinders performance?
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Old 01-09-2009, 12:46 PM   #23
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i run the 6s 5000 zippy-h and the 3300 6s zippy-h. I also have ran the 4s 5000 mah zippy-h.

The 6s 5000 weighs 829g. the 3300 weighs about 500g and the 4s 5000 weight 529 g.

there is not a noticeable difference running the packs handling wise. the difference is runtime, the big zippy runs forever. the 3300 6s is good for 15-20 min.

The problem with running the heavy battery is that you need to put alot of foam ahead of it or when you nosedive it will just smash through the front of the batt tray.

or you can also use a big velcro strip.
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Old 01-09-2009, 01:22 PM   #24
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Quote:
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The 6s 5000 weighs 829g.
Woahh! That's interesting. What vehicle? Racing application?
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Old 01-09-2009, 01:48 PM   #25
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I've been checking out the Zippy packs as well. Does anyone have experience with the MMM/2200kV system? On the CC website it says this system is designed for 6S. Do you think it would run well on 5s? I'm wondering which battery would be best for the setup:

ZIPPY-H 5000mAh 6S1P 20-30C http://www.hobbycity.com/hobbycity/s...idProduct=6353
ZIPPY-H 4000mAh 6S1P 25-35C http://www.hobbycity.com/hobbycity/s...idProduct=6415
ZIPPY-H 5000mAh 5S1P 20-30C http://www.hobbycity.com/hobbycity/s...idProduct=6352
ZIPPY-H 4000mAh 5S1P 25-35C http://www.hobbycity.com/hobbycity/s...idProduct=6414

The 4000mAH cells have a little higher C rating. Would they be better/worse than the 5000mAH @ a lower C rating?
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Old 01-09-2009, 02:53 PM   #26
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I run the 20c 5s 5000 packs (third one you listed) on a Losi 2100kv system and it's overpowered. For racing I dialed the throttle end point back to 80% and it's still got more power than I need on a large track.

Given the small price difference between the 4s 5000 and 5s 5000 packs I chose to go with the 5s for a bit more efficiency. If you're racing you could use either 4 or 5, 6 would be WAY too much. The 20c rated Zippys are plenty good, no need for the 30c rated ones.
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Old 01-09-2009, 03:39 PM   #27
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Hey,

I have your exact setup. EMBX6 and EMBX5T. u can look at my signature to see what i am running.

for the buggy, i get over 23 minutes using 4000K. that's with my ESC set with a 16v cutoff.

for truggy, i used a 5000K, but for some odd reason, i didn't make 15 minutes. i made 13.5 minutes. not sure what went wrong there. i jumped the gun and bought a 6K polyquest pack. i'll be running it this weekend, so i do not know total run time yet.

i am thinking 2K motor maybe a little too much for 5S. it would be better to get around the 1.7K motor such that u can get good speeds, yet improved run times.

for truggy, i don't think there is a such thing as "too heavy" for lipo packs. Buggy is a different story!!!
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Old 01-09-2009, 03:53 PM   #28
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in terms of weight, i run a 2300mah 5s lipo on my buggy for 5 min quals. i get a good 8 to 10 mins out of it. but, my buggy is actually TOO LIGHT with the 2300 pack. Yes i said it, TOO light. i find my self getting pushed and shoved around from the other cars. but i still run the 2300 pack for quals tho.
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Old 01-09-2009, 04:18 PM   #29
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Quote:
Originally Posted by Miller_Time View Post
I run the 20c 5s 5000 packs (third one you listed) on a Losi 2100kv system and it's overpowered. For racing I dialed the throttle end point back to 80% and it's still got more power than I need on a large track.

Given the small price difference between the 4s 5000 and 5s 5000 packs I chose to go with the 5s for a bit more efficiency. If you're racing you could use either 4 or 5, 6 would be WAY too much. The 20c rated Zippys are plenty good, no need for the 30c rated ones.
Thanks for the input Miller. I think i'll try the 5s and see what kind of power output I'm looking at.

I heard setting the throttle end point back is a bad thing though. Does anyone know why that is? It's just simply giving the motor less throttle from the ESC so I don't see the problem. Does it have something to do with the lower efficiency from partial throttle compared to full throttle?
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Old 01-09-2009, 04:57 PM   #30
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I'm not familiar with that but it sounds possible. I don't think it would be much of a concern however, since a 2100kv motor even on a 4s pack needs a VERY large track to see 100% throttle for more than 2 seconds a lap. You'll be at low throttle levels for nearly all of the race time.
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