USB-C MacBook Pro Air Charger, Charger Harbor SAIL01 65W Dual USB-C Power Delivery GaN PPS Wall Charger for iPhone 12 Pro Max, Galaxy S21, iPad Pro, Pixel, Switch
  • Fast Charging Speed: 65W Power Delivery charging speed can charge most compatible devices at max speed and can power up the Macbook Pro 15.4” from 0% to 100% in just under 2 hours
  • Dual USB-C Charging: Simultaneously charge two devices with 45W for your Macbook Pro, Macbook Air, Chromebook, or most other USB-C laptops; you also have 18W available for fast charging an iPhone 12 Pro Max, Samsung Galaxy S21, Pixel smartphones, and more.
  • Perfect for Traveling: About half the size of a Macbook Pro USB-C charger and the use of a foldable plug, this charger can be taken anywhere without any problems.
  • Powered by GaN Tech: Uses Gallium Nitride (GaN) technology that makes the charger more compact, delivers more charging power, and runs cooler.
  • Wider Compatibility: With the use of USB-C Power Delivery, you’re able to fast charge a wide range of devices such as the Macbook Pro, Dell XPS 13, XPS 15, iPhone 12 Pro Max, Galaxy S21 Ultra, Google Pixel, Nintendo Switch, and many others.

Review: Vinsic 20,000mAh Power Bank

Vinsic 20,000mAh Power Bank











  • High Capacity
  • LED Percentage Capacity Display
  • Fast Charging


  • Large Size
  • Heavy
  • Build Problems with Side Panels and Center Body

High capacity portable chargers are becoming more of a common type of a power bank because power banks are becoming more compact even with their higher capacities.

That’s the case for most power banks and some portable chargers are doing a better job than others with not only providing a high capacity power but also fast charging.

It’s getting to the point where getting a Mini power bank is questionable when you could just a high capacity power bank for similar portability and even better longevity when it comes to its power capacity.

Even with a higher price, these power behemoth chargers are climbing the ladder to widespread usage.

There are power banks like the Vinsic 20,000mAh power bank that are at the edge of being highly compact and still usable.

Other Types of 20,000mAh Power Banks:


Power Capacity

The Vinsic power bank is rated as a high capacity portable charger in our book by boasting a 20,000mAh power capacity.

Capable of charging smartphones well into the 6-time range and iPads or other tablets can do well in the 2 time or 2.5-time range of being charged.

All those charging capabilities are still viable even if the real output capacity of the power bank is about 18,000mAh, it’s still considered to be a lot of power.

 Vinsic 20,000mAh Power Bank (Output Capacity = 18,000mAh)Phone CapacityVinsic 20,000mAh Power Bank Left Over Capacity

# of Full Charges for the Device
iPhone SE18,000mAh1,624mAh16,376mAh

11 Full Charges
iPhone 618,000mAh1,810mAh16,190mAh

9 Full Charges
iPhone 6 Plus18,000mAh2,915mAh15,085mAh

6 Full Charges
iPhone 6s18,000mAh1,715mAh16,285mAh

10 Full Charges
iPhone 6s Plus18,000mAh2,750mAh15,250mAh

6 Full Charges
Samsung Galaxy S618,000mAh2,550mAh15,450mAh

7 Full Charges
Samsung Galaxy S6 Edge18,000mAh2,600mAh15,400mAh

6 Full Charges
Samsung Galaxy S718,000mAh3,000mAh15,000mAh

6 Full Charges
Samsung Galaxy S7 Edge18,000mAh3,600mAh14,400mAh

5 Full Charges

Output Charging

Then there are the charging speed capabilities of the power bank. There aren’t any flaws with the charging speed, the portable charger offers two charging output ports that both offer a 5V/2.4A charging speed.

Although there’s no Quick Charge with the power bank, the charger is able to provide standard max charging speed to any smartphone and tablet connected to it.

With that said, the max output of power bank is only capable of 5V/4.0A.

This means that even though both of the charging ports can charge at 2.4A, both of them can’t charge 2.4A at the same time since the power bank can only issue a max Amp current 4.0A.

We found it to be a surprise that it can charge 2.4A with both of the charging ports at the same time considering that other power banks like the PowerCore 20100 are capable doing it with its smaller size.

Although you won’t be able to charge two iPads at their max charging speeds, this power bank can do a great job at charging an iPad and a smartphone most likely at their max charging speeds.

Adding a 3rd port for Quick Charge would be nice, because of the design of the power bank, however, we’ll get to that later but the two charging ports with their speeds are optimal for charging nearly any device.

Read Review for Anker PowerCore 20100

Input Charging

The power bank has a Micro-USB Input port that recharges the power bank at 5V/2.0A charging speed. It’s an average recharging speed for a power bank if its capacity and you can expect it to be fully charged within about 7-8 hours.

It’s important that you recharge the power bank when you’re sleeping because waiting during the daytime for the power bank to recharge itself is going to take ALL DAY, to get the best experience just charge it overnight.

Powering capabilities of the Vinsic 20,000mAh power bank are nearly on point for what a power bank of its caliber should feature. Both of the ports offer quite fast charging to match an equally impressive capacity.

Similar Power Bank


Considering other high capacity power bank chargers within the Vinsic’s class like the Anker PowerCore 20100; The Vinsic portable charger is actually falling behind.

It tries its best to be “Portable” and offers an amazing charging experience but it’s due for an upgrade with the size and dimensions of the power bank.

Size and Weight

The length of the power bank is 6.85 inches so that makes the power bank half a foot long and it’s near 7 inches! The power bank’s width is 4.8 inches, so it’s quite difficult to place and carry in a single hand.

The final dimension, the thickness of the power bank is the strongest point which comes in at a 0.5 inch and is slim, which redeems the portability of the charger just a little.

Don’t get us wrong though the power bank is still quite small to be called a portable charger it’s definitely not the size or weight that you’d be carrying the power bank around.

The power bank weighs 1 pound, so carrying it in your hand is going to make you tired. However, the power bank is perfect if you’ve got a bag to put it into and use when you get to a destination.

Functional Components

All the functional aspects of the power bank are on a single side. The two Output ports are right next to each other and the Micro-USB Input port is to the left of the power bank.

The most notable thing about the power bank is the LCD screen that shows the capacity of the power bank from 0-100, so a percentage style of showing the capacity.

It’s definitely a welcomed feature and something different than the common LED dot lights. Another thing about the power bank is that there’s no power button, instead, the power bank automatically starts recharging once you plug a device in.

We found this feature to be quite bothersome since a power button is helpful if you simply want to check the capacity of the power bank without plugging in any device.


Build quality of the power bank is good, but it does have its few apparent flaws.

The casing the power bank is made of Aluminum Alloy so the shell is quite strong structurally, however, the power bank is open to smudges and scratches.

The sides of the portable charger hard plastic with a light varnish, but the side of the power bank and the batteries of the charger are its weakest point.

The sides of the charger are not placed very well and as result, the side panels can come out quite easily if you’re using the power bank heavily.

Not only that, but the batteries within the power bank can swell, and warp the Aluminum center of the power bank. By doing so, the power bank starts falling to places with the side panels coming out and the center Aluminum body changes its shape.

Batteries within devices like our smartphones do indeed swell but that’s more in the long-term. For this case, however, it can happen quite soon and as a result, the charger won’t be keeping its physical shape for long.

Another thing about batteries swelling is that it’s an indication of too much heat being generated and it can lead to the overall capacity of the power bank being decreased.

Read Review for Vinsic 20,000mAh Quick Charge/Type-C Power Bank


The power capacity and charging speed of the power bank are all on point. Vinsic’s portable charger is able to provide an ample amount of power that can last for days and each time you use the power bank, it’s going to charge nearly any device that you connect to it at max speed.

However, if you’re searching for a power bank that has been designed to be the most compact power bank ever, then this isn’t it.

The Vinsic power bank does make an effort to be portable, however, the charger is simply not the most reliable in terms of being an on-the-go kind of portable charger because of its large dimensions and heavyweight.

It’s the kind of portable charger that is “Portable” when you’re taking it to a destination where you intend to use the power bank.

For long-term use, the build of the power bank can prove to be bad, because the side panels aren’t placed into the Aluminum Alloy casing very well and there are cases when the Aluminum Casing may warp and bend.

Overall, the Vinsic power bank is at the optimal standard level for its power, but the design and build reliance can prove to be a disappointment.

Read Review for Vinsic 28,000mAh Power Bank with Quick Charge



The power capacity may not be the full 20,000mAh but you’re getting about 18,000mAh capacity that’s going to last for days.

The charging USB ports offer a 2.4 Amps charging speed that’s going to charge nearly any device you connect to it at max standard charging speed.

This means that you can connect two iPads, charge them at max speeds and have them charged fully because of the high capacity of the power bank.


The design the power bank accounts for its most prevalent weakness. It doesn’t try to be as compact as possible with its large dimensions and heavy weight; Calling the power bank a “Portable Charge” isn’t very appropriate. Rather, the power bank is mean to be taken to a destination and used because that’s the most convenient way to use the charger.


The build could definitely use some work since the power bank can have structural problems relating to its side plastic panels that can come out if the power bank is used a lot.

The Aluminum Alloy casing of the charger can begin to warp and bend if used heavily and can contribute to the weakness of the side panels.


It depends on the way you wish to use power bank.

If you want to have a high capacity power bank that’s going to keep you going for days without recharging and is capable of fast charging, then it passes on reliance right there.

However, the portability issues can heavily can in the way of relying on this portable charger, since it takes the “Portable” out of “Charger”.

More Reviews for 13,000mAh to 20,000mAh Power Banks

Specs of the Vinsic 20,000mAh Power Bank:

  • Capacity: 20,000mAh
  • Output:

Per Port: 5V/2.4A

Max Output: 4.0A

  • Input: 5V/2.0A via Micro USB Input
  • LED Power Indicators: LCD Display
  • Size: 6.4 x 4.6 x 0.55 inches
  • Weight: 1.1 Pounds
  • 18-month warranty


The Vinsic 20,000mAh power bank is powerful with its two ports that offer fast charging speed and a high capacity that can last for days without needing to be recharged.

The design is asking for a rehauling since it’s definitely from a previous era of the portable chargers and is now due for an upgrade with its large-sized dimensions and heavyweight.

Although, the placing the Output/Input ports are great and the LCD screen showing the actual percentage of power left is a feature that more power banks should really offer. It’s a good power bank that is just a design upgrade away from being great.

1 thought on “Review: Vinsic 20,000mAh Power Bank”

  1. Power








    The digital readout of the power bank remaining charge can be activated by pressing on either side of where the digital readout is located, and the display will show the remaining charge. There is no need to plug in a device to find the charge level.

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