EMIGVELA 20,000mAh power bank overview

EMIGVELA 20,000mAh power bankThe EMIGVELA 20,000mAh power bank is a type-C PD in and out 20 Amp 45 Watt beast that can charge your phone, and any current laptops that have a USB C charger.


  • Type-c inputs: (5/9/12/15V 3A,) (20V/2.25A)*
  • Outputs: USB A: 5V/2.4A. USB C: 5/9/12/15v 3A, 20V 2.24A
  • 410 grams / 0.00041 metric tons
  • 20000mAh Lithium Polymer batteries
  • LED battery percentage display

*listed on Amazon as 14.5V 3A

EMIGVELA 20,000mAh power bankEMIGVELA 20,000mAh power bank

Issues encountered

I’ll preface that the only issues thus far encountered are unrelated to the hardware of this thing however I’m still testing it.

As I was not fond of taking a hammer to the unit I decided to contact their support at the listing in the manual: [email protected] – this bounced with a 550 mailbox not found.

550 address not found

So I went to their website and got a website not found. Scratch that, it works with and it’s a WordPress blog with Hello World! as the only entry.

I’ve got an email into our PR person asking the questions and about the website (they do seem to be offering support on Amazon however.)

Something off in their math? Probably not.

Here’s the quote from their Amazon page:

Our Portable Charger has a large capacity.allow you to charge a Samsung Galaxy S9 up to 4 Times.A Iphone 5 up to 8 Times,a Iphone 6 up to 7 Times,a Iphone 7 up to 6 Times,a Iphone 8 up to 7 times,a Iphone X up to 5 Times.

136d58f1 71c0 4e9d bf68 b49349faaee4. CR00970300 PT0 SX970 1 - for some reason we don't have an alt tag here

I’ll skip the grammatical critiques.

Samsung Galaxy S9, 3000mAh battery, claimed up to 4 times = 12,000mAh
iPhone 5, 1440mAh battery, claimed up to 8 times = 11,520mAh
iPhone 5, 1810mAh battery, claimed up to 7 times = 12,670mAh
iPhone 7, 1960mAh battery, claimed up to 6 times = 11,760mAh
iPhone 8, 1821mAh battery, claimed up to 7 times = 12,747mAh
iPhone X, 2716mAh battery, claimed up to 5 times = 13,580mAh
Nintendo Switch, 4310mAh Battery, claimed 4 times = 17,240mAh

EMIGVELA 20,000mAh power bank

Now, we always make the assumption that there’s conversion loss on each side. Battery efficiency is generally high, but the components to feed the correct voltage and amperage out lose juice in the form of heat. Back at CES I was told the average battery to device efficiency was about 80%. This article claims 70-75%.

70% comes in at 14,000mAh effective and, yup, that’s the effective charge rate they’re advertising. At the 4X for the Switch (from the picture) that’s 86% efficiency, which is good.


It charges, recharges, appears to deliver at least 12,000mAh, charges on a Qualcomm Quick Charge 3 box I have at somewhere in the +20% an hour range.

It does not appear to support pass through charging which is a big no-no for me. I tried with a USB A to C cable to my phone and also a wireless charger I had laying around and there’s just no power coming out of the EMIGVELA 20,000mAh power bank when it’s charging.

EMIGVELA 20,000mAh power bank wrapup

Coming in at $49 on Amazon it’s actually a pretty good deal, and we’ve got a promo code for 30% off at checkout: 79PYDOPV

You can get an EMIGVELA 20,000mAh power bank at Amazon for about $34.30 with our coupon (assuming it works)

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Paul E King

Paul King started with GoodAndEVO in 2011, which merged with Pocketables, and as of 2018 he's evidently the owner. He lives in Nashville, works at a film production company, is married with two kids. Facebook | Twitter | Donate | More posts by Paul | Subscribe to Paul's posts

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