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HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › How many cycles do you get before a pack dies?
05-28-2016 04:11 PM  3 years ago
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BrianApp

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Grand Rapids, MI

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How many cycles do you get before a pack dies?
I did do a search and this topic came up but they were all about 10 years old so I thought I would ask again.

I know lipo life depends a lot on use but for those using ideal conditions what are the max and averages you are seeing?
In my case I never go below %30, never charge above 1.5C and always put to storage charge the same day if not used. I am starting to see one pack with a bad cell that will go to 4.15 when all the others are up to 4.2. It will then take another hour to get that cell up to 4.2, probably because once in balance mode the charger only puts out .5amps. When it comes down that cell is always .05 or so bellow the others. The pack is also showing a slight puff for the first time when it first comes down. This pack has seen 200 - 300 cycles over three years and I was wondering if it is starting to die early or if I got a good use out of it.
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05-28-2016 06:18 PM  3 years ago
pctomlin

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Texas

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How many cycles should a LiPo get before going bad is like asking how many licks does it take to get to the center of a Tootsie Pop. It all hinges around cell quality, flying style, care etc.. And then there is the weak cell from manufacturing process wild card that occasionally is thrown into the mix. Two to three hundred cycles is a very good number IMO, with anything over 150 cycles my expectation for my flying style and how I care for my batteries.
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05-28-2016 06:46 PM  3 years ago
DennisH

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Baton Rouge Louisiana USA

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Read the manual, then ask questions here.

A battery will last as long as you understand the batter and what's best for it. Otherwise, it might only last 5 flights.

JMO, dennis
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05-29-2016 04:19 AM  3 years ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

IR Internal resistance... That is the key...

Lipos gets old even if you dont used it...

High discharged lipos? No more than 30 when start to die.

Less flight time and more IR...

/
Saludos cordiales,
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06-01-2016 06:05 PM  3 years ago
BrianApp

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Grand Rapids, MI

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Three years and 200 cycles and all of my packs are starting to die so I guess I answered my own question. I got the same life out of a $60 bargain battery as I did a $150 superior one so in my case there wasn't much benefit to the "better" brand
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06-01-2016 09:21 PM  3 years ago
Rojoalfa

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it is not a matter of Brand.
It is a matter of day of birth.

LIPO that you purchase close to the day of birth, LIPO that is going to last...

LIPO old that you buy assuming as new, LIPO that will die soon.

/
Saludos cordiales,
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07-04-2016 11:47 AM  3 years ago
Richardmid1

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Leeds, England

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That is not entirely correct, Li-po's have a long shelf life if they are kept at the correct voltage and temperature.

As said it's all about IR, the lower the better in terms of performance and life. However the pack also needs to be balanced, not just in voltage but the IR of each cell need to be as close as possible.

You should always measure cell voltage and IR as soon as you buy a new li-po BEFORE you put your own connectors on and return the li-po if you are not happy. For me a li-po needs to be balanced within 0.15v as soon as I receive it AND balance perfectly within a few minutes of being on my charger (use small crocodile clips).
60% of the time, it works every time!
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07-04-2016 01:01 PM  3 years ago
ICUR1-2

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Ottawa, Ontario

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hmm seems like 3 years is the norm from what I am reading.

I just retired my 3 yr old nano techs, they still work but they are now getting a little puffy and they don't have that punch they used to have.
spending time, paying attention
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07-04-2016 02:15 PM  3 years ago
GyroFreak

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Orlando Florida ...28N 81W

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Read the manual, then ask questions here.
I thought his question was not only well stated, but even informative by stating his use of his batteries.
Thanks for your thread with an informative opening question.
.
And, I treat my batteries so bad I cannot answer the OPS question.
Paul
I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?
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07-07-2016 06:21 AM  3 years ago
tadawson

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Lewisville, TX

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One less than the number of flights when you crashed?

Friends don't let friends become electrotarded . . . .
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07-21-2016 03:38 AM  3 years ago
heliraptor10

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kokomo, in-US

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I got my pulse used..
The member I got it from got it used.

Between the three of us this pack is above 300 cycles.

IR numbers are below 4 ohms for each cell and the variance between the cells is less than .3

This battery still rocks. The only other brand I've seen with this sort of strength and longevity is thunder power.

Brand does matter for one reason, quality control. 8 years ago it made sense to buy generic batteries because they were half price. But now when you are only saving about 20% it doesn't make sense to me.

Next is discharge/charge rate, pull/push too many amps too often and you hurt the pack. My pulse is hardly warmer than the ambient temperature when I land.

Discharge it too far and you hurt the pack. I'm fairly conservative because what's another 30 seconds in the air vs needing to replace a pack.

A lot of people are hung up on freshness. But I see this as an offshoot of storage voltage. As I understand it 50% is where lipos are happiest.

This is just my two cents.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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07-21-2016 05:04 AM  3 years ago
BrianApp

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Grand Rapids, MI

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I kind of thought you got what you paid for as well but now that my $100+ Align 6S pack is starting to degrade at about the same rate as my $50 turnigys I have started to wonder.
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07-21-2016 07:06 AM  3 years ago
Richardmid1

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Leeds, England

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When it comes to our lipos the 'you get what you pay for' mentality is wrong. Yes you are more likely to get a bad Turnigy pack than a tp pack but get a good one and there is little difference between them. The trick is and ive said this many times is to know when it's a bad pack and send it back immediately for a replacement.60% of the time, it works every time!
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07-21-2016 04:34 PM  3 years ago
DemetriusUSN

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Virginia Beach, Va USA

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I never charge over 2c,I always balance them and I never run mine below 3.5volts. I've owned alot of the brands,just follow what manufacturer says and you'll be fine. I had Sky Lipos on my Fusion 50,several years ago and they lasted for about 3 plus years. The IR got high and the charge on the packs time deminished drastically. Just my 2cents....Minicopter Triabolo 700, Minicopter Diabolo 700, Minicopter Diabolo 600, Minicopter Diabolo 550, Goblin 770, HD 750, HD Cell 500
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07-21-2016 11:58 PM  3 years ago
heliraptor10

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kokomo, in-US

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I'd rather pay an extra 30 bucks and get it right the first time.
I hate returning stuff even with companies that bend over backwards to get you a new product.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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07-22-2016 06:08 AM  3 years ago
BrianApp

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Grand Rapids, MI

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I have six "cheap" turnigy 6S batteries and all have worked fine for three years. I hate to spend two to three times as much and get nothing extra for it.

The more expensive batteries must give extra performance but I don't push them hard enough to see it.
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07-22-2016 07:23 AM  3 years ago
wjvail

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Meridian, Mississippi

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https://rc.runryder.com/t806213p1/

I kinda asked the same question a few month ago and got a lot of the same answers.

I concluded there are ways to treat a battery that shorten a battery's life (obviously), but if even if treated well they all still die after about 2 to 4 years. Doesn't matter how good you treat them. I was hoping someone had found a brand or procedure that made batteries last longer but that doesn't seem to be the case. Ways to shorten a battery's life - sure. Ways to extend a battery's life - not really.

Because I fly so many different models, one particular model never gets flown a lot. The piratical implication of that is that all of my batteries will rot rather than die from cycles. For instance, I only fly my drone about every other month or about 6 times a year. It has a 4S 8,000 mAh battery that I will likely have to dispose of at the 3 year point with 18 cycles on it.

It is one of the most obvious down sides to e-flight. I have glow models I built in high school 40 years ago. Sure the 4 cell NiCad packs needs replacing every 5 to ten years but other than that I just put fuel in them. By contrast I have a 16 year old JR Voyager-E that gets flown about once every 3 or 4 years and every time I get the urge to fly it, I have to buy a new battery. I fly it again 3 or 4 flights and then back upstairs it goes. There is a good chance that that battery will be seriously degraded when I go to fly the VE helicopter again. So to answer the question in the topic of your post, about 3 or 4 flights.
"Well, nothing bad can happen now."
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07-22-2016 02:30 PM  3 years ago
heliraptor10

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kokomo, in-US

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2 to 3 times?
Where are you getting those numbers?
A pulse 6s 5000mah 45c retails for 140
And shipping is usually free
A comparable turnigy is 90 plus shipping
I'd post links but you know how this site is with h k
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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07-22-2016 04:44 PM  3 years ago
BrianApp

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Grand Rapids, MI

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The 6S 45C 5000 packs I got for this season were $56. I have seen other brands for $120 to $180.
Adding shipping I paid $128 for two of them and got them in 10 days.

I guess it depends on what you consider comparable, which, I guess, is the question in the last few posts.
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07-22-2016 10:55 PM  3 years ago
heliraptor10

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kokomo, in-US

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I look at reviews and what they use them for.
Most people using the packs that are 50 to 80$ are using them for cars and jets.
Or they are using two at a time in large helis.
2 6s packs in parallel ups the available amps so this isn't a good measure of how good a single pack is.
When you find people flying 500 size helis there are a lot of complaints of puffed packs.

Overall the longevity of a pack depends on too many variables.

I guess I have to concede and agree that the most important factor overall is how you treat the packs.

I just continue to be impressed with this pulse battery and was looking for a good place to gush.
Goblin! where have you been all my life?
RC helis, the original fidget spinners
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HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › How many cycles do you get before a pack dies?
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