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Graphene batteries really worth it?
#1
What is everyone's opinion on Graphene Lipo? I mean they are at least 10-20g heavier. I have heard many people do not recommend these batteries. Low internal resistance is the only good thing it's got as far I have read. Guys on youtube opened up the battery and didn't find Graphene at all. Should I go for it as it is costlier than Nano techs and others!
#2
I bought 2 to test.

I found that they are quality batteries with high c discharge and charge rates which is good (higher than most batteries). They hold their voltage well when under load and perform consistently.

I'd probably get them over the other turnigy packs out there since it really isn't that much more expensive. If you are super serious about racing and think they are too heavy then just cut out the protective plates and rewrap them and they will be a comparable weight as other brands. I personally like having the plates since it gives some sort of protection to the cells on hard impacts and could save more money in the long run
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#3
Graphene is carbon molecules arranged in a one atom thick sheet. It's also super hard to make. What they do is make a slurry containing a shit load of small bits of graphene and add it to the battery to help the electrons move through the cells faster. There's no black magic or false advertising here. If you look closely theres is liquid between the cells, thats where the graphene is.

I have a few graphenes in fact, they perform excellent, in fact a little too excellent in my opinion. Reason I say that is you really have to set up your low voltage warning properly because they will easily drain to less than 20% without any indication of sag. I've accidentally flown a few of them down to 1% now a couple times because it's only then that they seem to reduce in performance. So be aware of that and set up a low voltage monitor. With that said though, they charge right back up and balance ok again. No puffing, and very little heat. I recommend them based on they're performance, I don't care what they're made of. The weight is definitely a small issue though, but unless your actually competing at pro level I wouldn't worry about it.
[-] The following 2 users Like sushicanfly's post:
  • BigglesFPV, Oscar
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#4
(05-Sep-2016, 11:39 PM)sushicanfly Wrote: I have a few graphenes in fact, they perform excellent, in fact a little too excellent in my opinion. Reason I say that is you really have to set up your low voltage warning properly because they will easily drain to less than 20% without any indication of sag. I've accidentally flown a few of them down to 1% now a couple times because it's only then that they seem to reduce in performance. So be aware of that and set up a low voltage monitor. With that said though, they charge right back up and balance ok again. No puffing, and very little heat. I recommend them based on they're performance, I don't care what they're made of. The weight is definitely a small issue though, but unless your actually competing at pro level I wouldn't worry about it.

I have to disagree on that one - at least for me. Bought 2 Graphene 1500 4s 45c and they don't perform that well. Have flown them with 1806! motors and they get very warm and don't handle the current draw as well as much cheaper Zippys. Votage sagging - again - seems to be more or less the same as Zippys. Also I have to say that the internal resistance is not as good as advertised, Zippy 1800 40c 4s had combine resistance of 10 while Graphenes had 9 on Turnigy Reaktor. I know that you can't compare that to real measurements of internal resistance but you can compare the values measured on the same device.
I have to admit that balancing works great on those and I too like the idea of extra protection ( as I have killed some batteries while getting too confident). 
Maybe I've gotten a bad batch but I will not buy more Graphenes.

Just my experience.
Build - Fly - Crash - Repeat
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#5
I like them because they don't puff and comes down relatively warm instead of hot.
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#6
let me add my 5 cents,

i've had 4 sls 1300 xtron... i was crazy happy about them, eventually they wore out (im not a good owner for batteries), now im killing the graphene ones... and im really happy for the move (yet i havent seen rainbows/unicorns flying out of the batteries it self)

saging power etc ok we have not touched one cool parameter for those batteries... ability to easily charge batteries at 4c and higher... this means i can be up in the air with next 4 batteries in less than 1,5-2 hours Wink

and i've made them hot... but with my lack of skills and overpropping making battery hot is not a big thing Smile

easiest way forward, buy 1-2 and check if you "click" for them
All the best
Grzesiek (Grisha/ Greg)

Curently flyable: Nox 5, Nox 3, Minimalist 112, Scrap at the moment... nothing is flyable
Bench / in progres: fixing Nox 5, Nox 3, Minimalist 112, Scrap
thinking about building: 450

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