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Opinion on Turnigy battery Quality

Old 07-18-2013, 04:22 AM
  #1  
jeff4912
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Default Opinion on Turnigy battery Quality

I am thinking of getting this battery for my Mulitiplex Mentor.

http://www.hobbyking.com/hobbyking/s...arehouse_.html

Turnigy 4000mAh 4S 30C Lipo Pack

Any reason not to...ie quality or problems?

Thanks in advance.
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Old 07-18-2013, 05:39 AM
  #2  
mclarkson
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I haven't bought any packs that big, but I've had good luck with the basic Turnigy LiPos.
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Old 07-18-2013, 07:33 AM
  #3  
CHELLIE
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the turnigy, zippy and rhino Lipos have all served me well, no complaints here
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Old 07-18-2013, 08:43 AM
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BBCorvette18
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I love my turnigy lipos
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Old 07-18-2013, 02:20 PM
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Siberianhusky
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Beginner pilot, long time rc boater. Under the high amp draws we see in the boats it's generally accepted that the Zippy's last longer than the Turnigy's, which are better than their "nano-techs".
Probably doesn't make much difference in lightly loaded planes, not unusual for us to draw over 150 amps cont. in a boat and drain the packs to LVC in 3 1/2 minutes, yes we do tend to burn up a lot of esc's and motors, lot's of puffed lipos........price of going fast!
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Old 07-18-2013, 02:41 PM
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I use both Turnigy and Zippy's them without a problem. I like the 3S thin Zippy for certain applications.

I will say my new best friend for lipos is China Hobby Line(CHL) http://chinahobbyline.com/index.asp

They have a US warehouse, prices are comparable to HK, quality & service is excellent. Jason responds quickly to questions. All they do is Lipos, basically. They will even make custom lipos. Worth checking out. I'm really happy with the 4S 3300 30's I bought.

Question for Jeff : Do you really need 4S for the Mentor?

-Hawk
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Old 07-18-2013, 02:56 PM
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Siberianhusky
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INteresting, good prices as well. Wonder if I could choose the international warehouse for shipping to Canada. Refuse to order lipos from the states anymore, can't use USPS have to ship by courier - then get charged brokerage fees......
Stupid that I can have Lipos mailed from China, delivered by regular post, half way around the world, no brokerage fees!
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Old 07-18-2013, 03:10 PM
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dahawk
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Do a trial check out and see. I think they suggest that US and Canada use the US warehouse. I know for me( Texas ) shipping was pretty cheap.

Hawk
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Old 07-18-2013, 03:20 PM
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jeff4912
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Originally Posted by dahawk View Post

Question for Jeff : Do you really need 4S for the Mentor?

-Hawk
I am using the EMAX GT3520/05 out runner for my engine and the guys at Headsup Hobby said the best set up for this engine was to run a 4S battery.
Said the higher voltage would enable me to get up around 745watts with the propeller setup.
Figured a higher mAh battery would extend flight times more.

Thanks for everyone's input..much appreciated.
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Old 07-18-2013, 03:22 PM
  #10  
Siberianhusky
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The shipping is cheap but the brokerage charges kill you when you go pick them up at UPS!
Sent a message asking about international shipping.
LOL last time I ordered from StrongRC I couldn't add batteries, the brokerage charges from UPS equaled the price of the order just by adding a 2s 950mah battery. Left out the battery and had my stuff shipped for under 10$ first class tracked USPS....
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Old 07-18-2013, 03:27 PM
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dahawk
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Jeff,

Cool . More mah will give you longer times. Higher C will deliver power at higher rate.

Wow, that's about a 1hp motor you got there. Would love to see flight vid. A guy at our field uses a Mentor for training. Yours is a speed demon !

Hawk
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Old 07-18-2013, 03:53 PM
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BBCorvette18
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that seems like more power the you would ever need. in mg funcub im running a 3536 1000kv motor on 3s spinning a 12x3.8 sf or 11x7 prop and it more then enough power pretty much anything over 1/2 throttle is pointless except to go vertical until I decide to come back down
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Old 07-18-2013, 03:56 PM
  #13  
Old 'N Slow
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YA, shipping to Canada from the US is always a risky and expensive proposition, if they use UPS.

I haven't had brokerage issues with regular US Mail shipping. Just UPS.
With UPS, I've had $55 brokerage fees added to a $10 eBay purchase from 30 miles across the lake from me, from Erie PA! And NO brokerage charges with US Mail on a $200 order from California.

It's cheaper for me to order from the China warehouse, and in most cases, just as quick.

YA, we gotcher free trade rye cheer!

In the meantime, I use the Turnigy lipos, they've been fine in my tricopter, probably cycled each pack 50 times by now. No noticeable drop in performance.
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Old 07-18-2013, 04:40 PM
  #14  
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I have had very good experiences with Turnigy 2s and 3s batteries as well as Sky Lipo's.

With my 450 heli's (after having run through several other brands) I found Turnigy 1800mah and 2400mah 3s to hold up well even after running them down occasionally below 3.7v per cell.........the 6 I have now are all over 3yr's old and show very little "puff"....and all balance charge within 0.2v each cell.

The 4-2s 1600mah, 4-3s 1800mah and 4-3s 1300mah Blue Lipo's are becoming my favorites for the type of planes I fly (under 30oz).....no "puffyiness", all balance spot on even after running two of them a few times below 3.5v........

I purchase most of my batteries on-line at either Niroplanes, AMainHobbies or locally at Hobby People......neither of the on-line stores rip me with surge charges or shipping issues.....although I live in So.Cal.........and both of the on-line stores are located in Calif.
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Old 07-18-2013, 04:48 PM
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Originally Posted by dahawk View Post
Jeff,

Cool . More mah will give you longer times. Higher C will deliver power at higher rate.

Wow, that's about a 1hp motor you got there. Would love to see flight vid. A guy at our field uses a Mentor for training. Yours is a speed demon !

Hawk
Sorry, the engine is the GT3526/05, not the 3520. Here's the prop test info:

Battery Size Propeller Size Thrust (oz.) Amps Watts
5-Cell 18.5v APC 10 x 5E 91 oz. 33 amps 680 watts
5-Cell 18.5v APC 10 x 7E 92 oz. 44 amps 900 watts
5-Cell 18.5v APC 9 x 7.5E 72 oz. 42 amps 860 watts
4-Cell 14.8v APC 13 x 6.5E 110 oz. 60 amps 950 watts (Avoid constant wide open throttle)
4-Cell 14.8v APC 12 x 6E 97 oz. 45 amps 720 watts
4-Cell 14.8v APC 12 x 8E 88 oz. 52 amps 820 watts
4-Cell 14.8v APC 11 x 7E 82 oz. 40 amps 630 watts
4-Cell 14.8v APC 11 x 8.5E 77 oz. 46 amps 730 watts
3-Cell 11.1v APC 15 x 8E 104 oz. 46 amps 550 watts
3-Cell 11.1v APC 14 x 7E 90 oz. 42 amps 500 watts
3-Cell 11.1v APC 13 x 6.5E 77 oz. 36 amps 430 watts

I figure on getting 745 watts max running the 12x6e propeller and 4S battery.
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Old 07-18-2013, 05:23 PM
  #16  
hayofstacks
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ill bet your numbers are dead on too.

I got a 240 watt motor from heads up. I pulled 239watts on my meter. I did have to step up one size on prop, but I equate that to my 4500 ft elevation.

your going to have plenty of power.

back to point, I have both a 3 cell 4000mah and a 4 cell 4000 mah batteries I use in my ultra stick. I'm pulling near 800watts on the 4 fell and have gotten over 15 minutes on a flight. havebtnt hit lvc yet, and haven't ran the 3 cell too much.
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Old 07-18-2013, 06:05 PM
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jeff4912
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Originally Posted by BBCorvette18 View Post
that seems like more power the you would ever need. in mg funcub im running a 3536 1000kv motor on 3s spinning a 12x3.8 sf or 11x7 prop and it more then enough power pretty much anything over 1/2 throttle is pointless except to go vertical until I decide to come back down
I called back to Headsup Hobby and they revised the engine size to the EMAX GT2826/05.
He said what you said. Probably too big.
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Old 07-18-2013, 06:06 PM
  #18  
kyleservicetech
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Originally Posted by Old 'N Slow View Post
I haven't had brokerage issues with regular US Mail shipping. Just UPS.
With UPS, I've had $55 brokerage fees added to a $10 eBay purchase from 30 miles across the lake from me, from Erie PA! And NO brokerage charges with US Mail on a $200 order from California.
.
Yeah
Last fall I tried to ship about $50 worth of electronic parts in a small box to Lima Peru. UPS International wanted $165 to ship it there.

United States Postal Service wanted $12.75. And it got there faster than the UPS promise date. USPS had all the customs forms, and everything needed to ship international. Guess which one I used?
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Old 07-18-2013, 08:17 PM
  #19  
jeff4912
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Turnigy 4000mAh 4S 20C Lipo Pack

Would I be correct to assume that this battery will output a continuous 80 amps since 4000mAhx20C=80amps?

Also says this battery can put out 10 second burst at 30C.

Just trying to get understanding of this.

My EMAX GT2826/05 recommends a battery that can give a continuous 70amp output.

Also, why would they recommend a 70 amp continuous output, if the motor has a 45amp max or 650 watts?

Kv=860
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Old 07-18-2013, 10:58 PM
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kyleservicetech
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Originally Posted by jeff4912 View Post
Turnigy 4000mAh 4S 20C Lipo Pack

Would I be correct to assume that this battery will output a continuous 80 amps since 4000mAhx20C=80amps?

Also says this battery can put out 10 second burst at 30C.

Just trying to get understanding of this.

My EMAX GT2826/05 recommends a battery that can give a continuous 70amp output.

Also, why would they recommend a 70 amp continuous output, if the motor has a 45amp max or 650 watts?

Kv=860
Yup, 20C suggests that the battery will handle a continuous current of 20C time 4.0 Ampere Hours, or 80 Amps. And at wide open power, that battery will run about 3 minutes before it is completely flat.

Problem is, some suppliers are a little creative on their "C" rating. Don't know if Turnigy is one of them. Running a LiPo battery at to high of a current output can heat up those batteries. And if the core temperature of that battery hits about 140F, your batteries lifespan might be a little short.

As for "C", maybe this can clear things up:
http://www.wattflyer.com/forums/showthread.php?t=65869
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Old 07-19-2013, 12:39 AM
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jeff4912
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Kyle,

Thanks for the info.

Why would they suggest a battery capable of delivering 70amps when my engine is rated only for 45amps?

Wouldn't this be wasted power that would be heating up the ESC?

Shouldn't I get a battery with a lower C rating nearer the amperage rating of the engine?

Maybe a 4S 3300 20C maybe?

I would like to find a battery capable of about 10 minutes flight at about 1/2 to 2/3 throttle.

My engine is rated at 45 amps, 860kv, 590 watts with 11.5 prop on it.
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Old 07-19-2013, 12:43 AM
  #22  
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The battery being capable of delivering more current won't force the motor to accept it.

Often the capacity recommended is more for flight duration than for the current rating.
Consider that if you are actually demanding 20C you can drain the pack in 3 minutes.

Not so long ago 20C was the high end of current ratings for LiPos...
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Old 07-19-2013, 01:09 AM
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kyleservicetech
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Originally Posted by jeff4912 View Post
Kyle,

Thanks for the info.

Why would they suggest a battery capable of delivering 70amps when my engine is rated only for 45amps?

Wouldn't this be wasted power that would be heating up the ESC?

Shouldn't I get a battery with a lower C rating nearer the amperage rating of the engine?

Maybe a 4S 3300 20C maybe?

I would like to find a battery capable of about 10 minutes flight at about 1/2 to 2/3 throttle.

My engine is rated at 45 amps, 860kv, 590 watts with 11.5 prop on it.
With a given motor and battery pack, the power pulled by your electric motor is entirely determined by your propeller. And, nothing else. The ESC is nothing more than a solid state switching device that is converting your DC battery power to drive your brushless motor. These brushless motors are essentially a three phase motor.

These electric motors are DUMB. You can take their prop off and run them with no problems. (Not true on a glow engine) You can put the proper prop on them and have a very good time. You can put an oversized prop on them, and your motor will really haul your model around the sky. Until your model starts leaving smoke trails from your motor/ESC/Battery pack.

The propeller diameter and pitch are critical for how your model will fly. For the smaller models, go down one inch in diameter, and your model might not get off the ground. Go up one inch in diameter, and you could cook your motor.

This is why one of those wattmeters is so valuable with these electric power plants. If your prop is to small compared to your motors rating, you'll know it. And if your prop is to big, pulling perhaps 50% over the motors rating, that wattmeter will let you know, and pay for it self immediately.
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Old 07-19-2013, 02:21 AM
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I put an emax 2820/07 in a PZ T-28 then later in my Formosa II . 900KV delivering about 500watts. Heavy duty power that could handle 4S with no problem. The downside was that is weighs 5.4 OZ. Just another consideration when considering a motor. I love HURC and buy a lot of stuff from them but you could also look at the SK3 series from HK. Pretty darn good.

Just my 2c

-Hawk
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