Graphene power bank reviews?

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ZoomieFan
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Graphene power bank reviews?

I found a handful of graphene power banks with fantastic specs.
Marketing specs…

Are there any decent reviews of these power banks?

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

2A
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I second this interesting question, have seen a few specs and never seen them IRL. subscribed.

RobertB
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Time will tell. But looks to me like efficiency is not there.

ZoomieFan
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This is the fastest self-charging graphene PB I found. https://elecjet.com/products/apollo-traveller-graphene-usb-c-pd-power-ba...

10000 mAh in 10 minutes, translates to 26000 in 47 minutes.

This regular PB takes 3 hours to recharge. https://www.xtorm.eu/en/explore/xtorm-60w-power-bank-voyager-26-000/

Both use a 60W charger. Both are about 94Wh
94/60 = 1h34 to recharge. And that’s assuming that the full 60W is used to the very end of the charging cycle. And that the charging efficiency is 100%. Both aren’t true. But if they are the graphene bank takes double time or double specced Watts to be charged in 47 minutes.

So, my conclusion is, that the specs of the graphene PB are technically impossible. Correct?
The 3 hours of the regular PB seem much closer to reality.

I have a 26000 mAh regular bank charging at 20W takes about 6 hours. 20/60*6=3 hours, which aligns perfectly with the regular PB.

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

sac02
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(emphasis mine)

ZoomieFan wrote:

This is the fastest self-charging graphene PB I found. https://elecjet.com/products/apollo-traveller-graphene-usb-c-pd-power-ba...

10000 mAh in 10 minutes, translates to 26000 in 47 minutes. !!!

This regular PB takes 3 hours to recharge. https://www.xtorm.eu/en/explore/xtorm-60w-power-bank-voyager-26-000/

Both use a 60W charger. Both are about 94Wh !!!
94/60 = 1h34 to recharge. And that’s assuming that the full 60W is used to the very end of the charging cycle. And that the charging efficiency is 100%. Both aren’t true. But if they are the graphene bank takes double time or double specced Watts to be charged in 47 minutes.

So, my conclusion is, that the specs of the graphene PB are technically impossible. Correct?

I’m unsure what specs you are looking at?

The first charger is 5000mAh, which is 18.5Wh (5.0Ah * 3.7V)

18.5Wh/60W = 0.31h = 18.5min (lol easy math when charging rate in W = number of minutes in an hour)

So the numbers look “OK” to me?

Obviously efficiency is not 100% as you say, (and idk this brand, but they could easily lie about capacity specs also) but the Marketing department can’t be bothered with silly technicalities like that! Silly

ZoomieFan
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Ow… crap. My whole post was based on 10000 graphene… (capacity of another graphene PB)

5000 mAh = 18 Wh
Charge @60W = 18 mins.
So indeed the numbers are ok if efficiency is 100% and it charges at 60W all the time.
That would be over twice as fast as the regular PB.
Unfortunately I have no use for a tiny PB like that.

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

kennybobby
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Do any graphene cells actually exist in production? maybe in a lab somewhere…

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will34
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Not sure about the graphene thing…

When manufacturers claim X minutes to 50% they’re just not taking the CV phase into account, in theory you could charge any modern lithium ion chemistry like NMC at up to 5C just fine, which translates roughly into 15 minutes to 70%. They could also lower the capacity while maintaining stupidly high charge rate in order to fulfill their claim, who cares about the long term capacity loss right?

We are just used to see very slow 0.2 or 0.3C charge rate because until just recently powerbanks were limited to 18-24W which was the max input for Quick charge technology and the upper limit for the MicroUSB port, but now that power delivery has become common for laptops we are seeing up to 3C charge rate for powerbanks.

I have a zendure super tank which is one of the first 100W capable powerbanks in the market, at first I was skeptical because it uses low drain LG INR-F1 cells but after extended testing I must say it works quite well, but at max output or input it gets really hot and the efficiency takes a hit.

ZoomieFan
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kennybobby wrote:
Do any graphene cells actually exist in production? maybe in a lab somewhere…

https://beebom.com/best-graphene-power-banks/#:~:text=It%20has%20an%20ex....
https://www.amazon.co.uk/Graphene-power-bank-charging-wireless/dp/B07×1...

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

ZoomieFan
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will34 wrote:
Not sure about the graphene thing…

When manufacturers claim X minutes to 50% they’re just not taking the CV phase into account, in theory you could charge any modern lithium ion chemistry like NMC at up to 5C just fine, which translates roughly into 15 minutes to 70%. They could also lower the capacity while maintaining stupidly high charge rate in order to fulfill their claim, who cares about the long term capacity loss right?

We are just used to see very slow 0.2 or 0.3C charge rate because until just recently powerbanks were limited to 18-24W which was the max input for Quick charge technology and the upper limit for the MicroUSB port, but now that power delivery has become common for laptops we are seeing up to 3C charge rate for powerbanks.

I have a zendure super tank which is one of the first 100W capable powerbanks in the market, at first I was skeptical because it uses low drain LG INR-F1 cells but after extended testing I must say it works quite well, but at max output or input it gets really hot and the efficiency takes a hit.

I found a comment in a blog post that states the 18min are spot on. But obviously I have no way to know it wasn’t the seller who posted that comment.

About your …C remarks. I think they are still valid for graphene because the graphene PBs sold today are old tech mixed with a little graphene. Reason being that graphene is still extremely expensive to manufacture. So I think we will see many years of updated performance. If the likes of Tesla get interested production prices likely drop quickly.

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

ZoomieFan
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@will34
You are right that the power input was always quite low. But imo there always was a way around it.
I have an old EasyAcc with 2× 2A input (USB micro).
I wonder 2xQC never was sold.
Two charging wires is messy, I admit that, but am I really the only one that’s willing to put up with that?

Nowadays PD 18-30W input seems to be popular. While there are also 60W in and even 100W in Zendure’s case.
The way I see it most PBs seem to focus on how fast they charge devices instead of how fast they get recharged themselves.
While I really like my gadgets to be recharged quickly my focus is on recharging my PB.

I always are in need for a PB when on board a plane. The output of the PB should be enough to keep my laptop powered up.
But at the airport between flights I need to recharge in a very short time.
Currently I simply have several PBs with me which I all recharge simultaneously. When I’m ready for boarding they are all partly charged.
It works but takes a ton of PBs, chargers and cables.

So… now I’ve made it my mission to find fast recharging PBs.

I’m also looking for a fast recharging laptop with good battery life and specs I like. An even more impossible task it seems. But that’s a topic for another forum I guess…

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

kennybobby
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It’s all marketing claims and i call BS. These are not graphene batteries—they might have a tiny piece of graphene thrown in to make a claim. Graphene material is not readily available in the sheets and sizes required to make cells.

Example of hype and BS:

Quote:

Since Graphene is very costly, creating batteries for mass consumption is still not financially viable. However, researchers found that you don’t need a Graphene only battery to get better performance. In fact, just using a hybrid battery made of regular Li-Po and Graphene results in higher capacity and better lifetime charge cycles. Currently, most of the Graphene power banks that you can find on the market are these hybrid batteries. Once the production cost of Graphene comes down, we will see pure Graphene power banks on the market.

While we can’t test the claims, the company has reportedly partnered with Tesla and Panasonic to build this superfast Graphene power bank. Chargeasap is currently crowdfunding the project on Indiegogo and is now on shipping stage.

The tech behind this power bank is similar to the Real Graphene power bank. You are essentially getting a lithium-polymer battery but with 5% of composite graphene mixed to make the power bank superconductive.

Who are these so-called researchers? It is BS to make claims without proof, and to sell products based upon such imaginary data.

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ZoomieFan
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I think the researchers are those who ‘invented’ graphene. That’s serious research.
On a lower level those who turned it into a power bank.
Even I am a researcher because I’m researching what’s the best PB for my use Party

But… can the data be trusted? That’s exactly why I started this thread.
We all know how ‘flexible’ the sales department can be with claims of runtime and lumen of a flashlight

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.

kennybobby
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i agree.

i would just ignore the use of the word graphene as a sales gimmick, and then evaluate the performance based upon the available datasheets and actual test data (e.g. HJK’s threads) for Li cells/packs/PBs etc.

Good luck in your search.

Favorite Song = "Flashlight" (BLF of course, with a righteous bass)
https://youtu.be/gCTGMIXaD64

Exercise and Training:
My typical training routine: https://youtu.be/_aVASp9raMk
Morning Workout: https://youtu.be/ZEA_3yXG570

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ZoomieFan
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Does HJK also has PB reviews?
I found XTAR reviews but they are also chargers.

Chargers: 1xBasen BD01 5/5, 1x Gyrfalcon All-88 4/5, LiitoKala: 3x100 3/5, 2x202 3/5, 1x402 3/5., MiBoxer C4-12 3/5.
Flashlights: DQG Tiny III 26650 5/5, FiTorch MR35 3/5, Haikelite SC26 HD 3/5, Lumintop Tool AA/AAA 4/5, Nitecore LA10, Sofirn C01 BLF 3200k/5600k 2/5, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5, Xtar PB2S 5/5
Waiting for: (DQG Tiny) 21700 EDCs.