20,000 mAh Power Bank recommendations?

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Pete7874
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20,000 mAh Power Bank recommendations?

Looking for something with QC3.0 output that is known to use quality cells and delivers the advertised capacity.

I know HKJ favorably reviewed the Ravpower one. It is currently $45 on Amazon. I’m just wondering what else is out there worth considering, hopefully under $40.

There is Jackery ThunderX for a surprising low price of $20, but the reviews are mixed… seems like there are quality control issues with some of them.

Are the Xiaomi ones worth getting?

Recommendations welcome.

Thanks!

Edited by: Pete7874 on 06/02/2018 - 08:01
Robowski
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I have had a Xiaomi Power Bank 10000mAH for well over 6 months now and find it very good. (purchased on eBay)
I can charge my phone up at least 3 or 4 times from it.
No problems at all. It’s well made and very sturdy.
I see there are 20000mAH QC3.0 models on eBay available for less than $40.

Richie086
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Hi Pete,

The last month or so I’ve been big into purchasing very high capacity power banks for emergency use and typically in the range of 75,000 mAh that are built using the LiitoKala INR26650-50A 5000mAh cells (15 cells inside).

In your case, it’ll be difficult to find a good power bank with a capacity of 20,000mAh without you having to take a chance on getting a good one due to the reason you mentioned regarding QC issues and the price range. However, you can limit a bad experience by purchasing the lower cost power bank linked below, which is within the capacity you are asking for and is Qualcomm 3.0. In addition to having Quick Charge, it’ll be powered by either Panasonic or LG batteries, and is also fulfilled by Amazon. So if any issue arise with it, it’ll be easy to return it.

iKits-Power

Richie

Yourrid
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Look at Anker. They make some very high quality products at a reasonable price. This is exactly what you’re looking for (I think).

https://www.anker.com/products/variant/powercore-speed-20000-upgraded/A1278011

Pete7874
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Richie086 wrote:
“iKits-Power”:https://www.amazon.com/dp/B0196F1NU0/?coliid=I3V8NDDLLTWIHD&colid=3ENFML...

Thanks. This is is so low priced, it’s actually scary. I don’t know how they can get 6 LG cells and all the rest of the hardware and still sell it at a profit at this price. Some of the reviews are rather critical. I don’t mind paying a little more for peace of mind.
GreenLights
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Richie086 wrote:
The last month or so I’ve been big into purchasing very high capacity power banks for emergency use and typically in the range of 75,000 mAh that are built using the LiitoKala INR26650-50A 5000mAh cells (15 cells inside).

Can you share some info about these, hopefully a link where to purchase. I’m interested in them for emergency use as well. Thanks.

Just discovered this wonderful addiction.

Richie086
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Pete7874 wrote:
Richie086 wrote:
“iKits-Power”:https://www.amazon.com/dp/B0196F1NU0/?coliid=I3V8NDDLLTWIHD&colid=3ENFML...
Thanks. This is is so low priced, it’s actually scary. I don’t know how they can get 6 LG cells and all the rest of the hardware and still sell it at a profit at this price. Some of the reviews are rather critical. I don’t mind paying a little more for peace of mind.

Hi Pete,

When you mentioned 20,000mAh’s, the number stuck in my head and I also thought you wanted one for $20.00 or less…LOL. Sorry, I had a temporary brain lapse. Funny thing is, the batteries are
worth more than the power bank itself.

Richie

Richie086
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GreenLights wrote:
Richie086 wrote:
The last month or so I’ve been big into purchasing very high capacity power banks for emergency use and typically in the range of 75,000 mAh that are built using the LiitoKala INR26650-50A 5000mAh cells (15 cells inside).

Can you share some info about these, hopefully a link where to purchase. I’m interested in them for emergency use as well. Thanks.

Hi Green,

If Pete doesn’t mind me posting a link to a much higher capacity power bank in his thread, I’ll do that. I really need to take some photos and start a new thread on these. I’ve been most impressed with them
and for $200.00 or less, I think it’s a bargain considering what the Goal Zero brands and such cost.

Richie

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@Pete, there are two products that I can vouch for their quality since they have been reviewed by trustworthy people and are not expensive.

There is EasyAcc 20Ah 4 USB ports power bank. It has been tested to actually be 22 400mAh, so good thing there:

https://www.amazon.com/EasyAcc-20000mAh-Portable-Recharge-Capacity/dp/B0...

There is also Romoss. It is the OEM of many powerbanks such as Ravpower.
Their flagship monster has an 8A output limit over 4 ports:

https://www.amazon.com/ROMOSS-20000mAh-Portable-Capacity-Micro-USB/dp/B0...

Then there is iMuto. They specify in 26650 power banks:
https://www.amazon.com/20000mAh-Portable-Charger-External-Black/dp/B0119...

I can trust that last one too since I have tested it to be 91% efficient at 5V 1A, and 89% at 5V2A. Which is quite good.

BTW, guys, the reason I only buy power banks with cylindrical cells is because if the power bank dies before warranty ends, I can just ask for another power bank from the brand. It happened once with my RavPower QC 3.0 20000mAh one, in which one of the USB-A ports broke, and caused a soft short, emptying the bank in about 2 days.

After I received the new powerbank, I opened up the pack, and found 6×3400mAh cells, and I now use them in many of my flashlights.

TLDR: Only buy 18650/26650 power banks so you cab salvage the cells later if something goes wrong.

Finally, Pete, don’t sorry about some of their prices. With the 10000s of cells they are ordering, they must be getting them at 1.35-2$ a piece, then picking the cheapest case and electronics for the ones 30$.

antik
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Look at Xiaomi power banks – they make the best bang for buck banks on the market. The 20,000 mAh go for around $35, contain Panasonic/LG cells and have a conversion rate of ~93% (12,700 mAh actual)

Pete7874
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BlueSwordM, thanks for the suggestions, but none of the chargers you linked have QC3.0 output, unless I missed it.

BlueSwordM
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@Pete

1. The Romoss supports 5V 3A charging and discharging over USB-C.

Samsung and LG phones can fast charge from them if you are using a USB-C to C cable.

The EasyAcc support 5V 4A charging from 2 Micro-USB ports, a bit inconvenient, but the second fast charging non-USB C/DC jack powerbank. at 20W.

2. Are you willing to forgive 18650 power banks? If so, getting a lithium ion power bank with a pouch cell and Qualcomm QC 3.0 is much easier.

This Vinsic QC 3.0 has been tested by Dodge reviews to have a legit 20Ah cell:
https://www.youtube.com/watch?v=avzcmVL8zXI

Here is the Amazon page:

https://www.amazon.com/VINSIC-Portable-Charger-20000mAh-External/dp/B079...

It is a real legit 20Ah powerbank.

Pete7874
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Quote:
The EasyAcc support 5V 4A charging from 2 Micro-USB ports,
That is just for input, not output.
I am looking for 9V/2A output.

Quote:
This Vinsic QC 3.0 has been tested by Dodge reviews to have a legit 20Ah cell:
https://www.youtube.com/watch?v=avzcmVL8zXI

Here is the Amazon page:

https://www.amazon.com/VINSIC-Portable-Charger-20000mAh-External/dp/B079…

It is a real legit 20Ah powerbank.

The one in the Youtube video is VSP304. The one on Amazon is VSP303. I wonder what the difference is.
Looks nice though. I don’t mind that it’s not 18650/26650 based.
Robowski
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Hi Pete7874

I see another member “antik” recommends the Xiaomi as well.

There is a good review for one on this forum:

http://budgetlightforum.com/node/55221

I hope this link works because it’s the first time I’ve done this

Pete7874
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Just to update this thread, I ended up ordering the Romoss one that BlueSwordM provided a link to earlier, based on a combination of price, good reviews, and high overall current output. It does not have QC 3.0 output, which was one of my original requirements, but I just couldn’t find something with QC 3.0 that was also reasonably priced, had great reviews, and was made by a reputable company. 5V/2.4A output will be good enough for me, I guess.

BlueSwordM
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@pete, sorry, I had forgotten about this one:

https://www.amazon.com/Besiter-Portable-Capacity-20000mah-External/dp/B0...

It’s a legit 20Ah powerbank, with a max combined output of 36W using both the QC 3.0 and USB-C port.

For some reason, they all use the same powerbank circuit as the RavPower QC 3.0, but just has a less capable buck converter for charging, meaning the “clones” only charge at 18W vs the 24W the RavPower is capable of.

Pete7874
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BlueSwordM wrote:
@pete, sorry, I had forgotten about this one:

https://www.amazon.com/Besiter-Portable-Capacity-20000mah-External/dp/B0...

I did see this one earlier, but some of the critical 1 and 2 star reviews stopped me from getting it. And I’ve never heard of Besiter either. Smile

I was more comfortable buying Romoss, just based on my personal experience with their chargers in the past.

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You’re not lucky either.

I got my RavPower QC 3.0 for 26$CA, do about 20$US last year.

ZoomieFan
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BlueSwordM wrote:
@Pete, there are two products that I can vouch for their quality since they have been reviewed by trustworthy people and are not expensive.

There is EasyAcc 20Ah 4 USB ports power bank. It has been tested to actually be 22 400mAh, so good thing there:

https://www.amazon.com/EasyAcc-20000mAh-Portable-Recharge-Capacity/dp/B0...

I have that one, capacity charging speed, output are all good.
But construction is sub-par.
Two of it’s 4 port wiggled a bit when I first got it. Now after a year the ports can only be used when you push them exactly the right way.
If not they ‘disconnect’ and don’t charge at all.

Chargers: 1xBasen BD01 5/5,1xDodge Charger, LiitoKala: 3x100 4/5, 2x202 5/5, 1x402 3/5., MiBoxer C4-12 3/5
Flashlights: BLF Q8 4/5, Convoy BD04 5/5, DQG Tiny III, FiTorch MR35 3/5, Haikelite SC26 HD, Zebralight H600Fc 3/5.
Powerbanks: EasyAcc 26800 mAh 3/5, Xtar PB2 4/5
Waiting for: 21700 EDCs to hit the market.

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Yourrid wrote:
Look at Anker. They make some very high quality products at a reasonable price. This is exactly what you’re looking for (I think). https://www.anker.com/products/variant/powercore-speed-20000-upgraded/A1...

Actually anker raised the price of his power bank after he win the 80% of the amazon.com market. I guess xiaomi is a better choice.

What’s the future of flashlights?

Left ThorFire. Now self-employed.

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BlueSwordM wrote:
@pete, sorry, I had forgotten about this one:

https://www.amazon.com/Besiter-Portable-Capacity-20000mah-External/dp/B0...

It’s a legit 20Ah powerbank, with a max combined output of 36W using both the QC 3.0 and USB-C port.

For some reason, they all use the same powerbank circuit as the RavPower QC 3.0, but just has a less capable buck converter for charging, meaning the “clones” only charge at 18W vs the 24W the RavPower is capable of.

Thanks BlueSwordM,
I got this one you linked to for use with the mini TS-80 soldering iron and it needs QC 3.0 and USB-C. Hopefully it will be a nice portable solution. As a plus I can charge my phone and flashlights with it when needed.

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You’re welcome.

I’m always here to help.

BTW, if you have a USB power meter and some 5Ohm resistors, you could perhaps test the powerbank’s real capacity.