Review: Vinsic 28,000mAh Power Bank with 2 Smart USB Ports and Quick Charge

Review: Vinsic 28000mAh Power Bank with 2 Smart USB Ports and Quick Charge









  • Has a Very High Power Capacity that can last for days
  • Use Powerful Standard USB Ports and also has Quick Charge
  • Uses Quick Charge with its Input Port


  • Very Large and Heavy

You might be hesitant to purchase a high capacity power bank as they’re larger and heavier, but if you’re purchasing the right one, the increase in weight and size just seems negligible.

That’s what this Vinsic portable charger has to offer with a high 28,000mAh power capacity and 3 USB charging ports.

Not the smallest portable charger, but if you want a high capacity power bank that is going to take you far with its capabilities then this Vinsic portable charger is one of them.

Other Types of High Capacity Power Banks:

AUKEY 30,000mAh Portable Charger with Quick Charge 3.0


Power Capacity:

The priority is going over what this portable charger has to offer with its power capacity as that’s one of the main reasons it’s large and heavy.

It has a 28,000mAh power capacity and that is a lot of power.

That said since this Vinsic charger has three USB ports, the power capacity that you receive is going to depend on how many USB charging ports you use at the same time.

As there are a Quick Charge port and two standard ports that have a charging speed of 5V/2.4A each. With that said, let’s just take a look at the average Output power capacity that you’re able to receive when you use both of the standard ports at the same time:

3.7 x 28,000 = 103600 / 5 = 20,720mAh

 Vinsic 28,000mAh Power Bank
(Output Power Capacity = 20,720mAh)
Phone CapacityVinsic 28,000mAh Power Bank Left Over Power Capacity after 1 Charge

Number of Full Charges
iPhone SE20,720mAh1,624mAh19,096mAh Left Over

12.7 Full Charges
iPhone 620,720mAh1,810mAh18,910mAh Left Over

11.4 Full Charges
iPhone 6 Plus20,720mAh2,915mAh
17,805mAh Left Over

7.1 Full Charges
iPhone 6s20,720mAh1,715mAh19,005mAh Left Over

12 Full Charges
iPhone 6s Plus20,720mAh2,750mAh17,970mAh Left Over

7.5 Full Charges
Samsung Galaxy S620,720mAh2,550mAh18,170mAh Left Over

8.1 Full Charges
Samsung Galaxy S6 Edge20,720mAh2,600mAh18,120mAh Left Over

7.9 Full Charges
Samsung Galaxy S720,720mAh3,000mAh17,720mAh Left Over

6.9 Full Charges
Samsung Galaxy S7 Edge20,720mAh3,600mAh17,120mAh Left Over

5.7 Full Charges
Apple iPad Mini 220,720mAh6,470mAh14,250mAh Left Over

3.2 Full Charges
Apple iPad Mini 420,720mAh5,124mAh15,596mAh Left Over

4 Full Charges

If you’re solely using the two standard USB ports then you’re able to get about 20,000mAh of power capacity and that is good as you’re able to charge smartphones to their full power about 5 times.

Also, larger devices such as tablets can charge to their full power about 2.5 times.

Still a Lot of Power to Use when Charging Three Devices

So what if you’re using three of the ports at the same time with the use of the Quick Charge port with a Quick Charge compatible device?

Ultimately, you’re going to be getting less power capacity as the Quick Charge port gives a faster charging speed.

Most of the time, when it does come to using Quick Charge in comparison to the power capacity that you would receive with standard charging, then there is usually 2,000mAh subtracted from the original Output power capacity.

That is going to leave you with 18,000mAh of power capacity that you can use.

No matter how you look at it though, the Output power capacity that you’re able to receive from using two of the standard ports at the same time, or using 3 of the ports at the same time is still a lot.

That’s because this portable charger has a very high initial power capacity of 28,000mAh and so it’s still able to provide lots of power even after its conversion.

Output Charging:

When it comes to using the charging ports it’s one of the best charging experiences that you can have with a high capacity portable charger.

Two Standard Ports:

Two USB ports don’t use Quick Charge and each of them can output the same charging speed of 5V/2.4A.

So they can charge most Non-Compatible Quick Charge devices at their max charging speeds, such as iPads, smartphones, and plenty of other tablets too. Another important aspect of these two USB ports is that the max output of power for this portion of two ports is 3.1A

That means that if you’re using both of the USB ports and the max output of 3.1A is being reached then each of the charging ports can output a charging speed of 5V/1.6A as they’re limited by the max output of the power with these two ports.

This means that you, unfortunately, cannot use the max power of 2.4A of the standard ports at the same time, and if you do want to charge a device like an iPad at its max charging speed then it’s best to charge it alone using one of the standard ports only.

Quick Charge Port:

The Quick Charge USB port on this USB wall charger is on a separate plane from the two standard ports on this portable charger and so it doesn’t adhere to the max output that they have.

That said, this USB port has a charging speed of 5V/3.0A | 9V/2.0A | 12V/1.5A.

So you’re able to charge your Quick Charge compatible smartphones and tablets at their max charging speed.

However, even though we did say that there is a max output limit when it comes to the standard USB port portion of this portable charger, you can still use the Quick Charge port with standard devices and the Quick Charge port can output 5V/2.4A too or 5V/3.0A for devices such as the Nexus 6P and Nexus 5X.

Input Charging:

When it comes time to recharge this 28,000mAh power bank, you have a single Micro-USB input port that uses Quick Charge to recharge, or at least you have the option to recharge it using a Quick Charge USB wall charger.

That’s because it has a charging speed of 5V/2.0A | 9V/2.0A  and when you do use a Quick Charge wall charger to recharge it then you’re able to get a full recharge within about 8 hours.

Which is not too bad considering its massive power capacity.


Size and Weight:

With the use of its high power capacity and multiple USB ports, this power bank is quite large and heavy.

Of course, it’s not going to be fitting into your pocket, however, it can still go anywhere with you without any problems. As it has a length of 6.9 inches, a width of 4 inches, and a thickness of 0.87 inches. The weight of the charger is 1.3 pounds.

This is the type of charger that you’re able to take to a location and use but for the most part, you won’t be holding it and charging your smartphone.

These attributes are quite common with most high capacity power banks, it’s just that this one has very high power capacity and uses many USB ports so you’re going to want to set it down when you do use it.

Functional Components:

Nearly all of the functional parts of this Vinsic 28,000mAh power bank are on a single side. This site includes the LCD power capacity display, three of the USB charging ports, and a Micro-USB input port. At the top of the power, the bank is where there’s the power button.

Charging doesn’t start automatically, so you must press the power button once you’ve connected the device to the charger.

Also, the use of an LCD power capacity display is very helpful as it shows the amount of power that’s left using a 3 digit percentage for a more accurate rating.

Once you start charging your device, the power capacity display stays on for about 20 seconds, and then it turns off. To temporarily turn on the display again while charging, you have to press the power button again.

This is a great design as power capacity isn’t lost when showing you the power capacity that’s left.


Structure and Material:

The structure and material of this portable charger are great as it’s made of aluminum for the most part.

However, one-half of the charger has a grainy texture that makes it not slip on a slippery flat surface.

The charging components are also great as they have a great grip on a charging cable once you connect it and the LCD for the power capacity looks great too.


On the tech side, things stay rather cool even when you’re using three of the USB ports at the same time.

iMuto Portable Charger X6 Pro 30,000mAh Power Bank


One of the most important factors to remember with this portable charger is its use of Quick Charge as it has a Quick Charge USB port and a Micro-USB input port that uses Quick Charge too.

Which makes it a more reliable portable charger for those that own Quick Charge smartphones and tablets, as you can charge your devices faster and most likely recharge this power bank at its max recharge rate if you own a Quick Charge wall charger too.

That said, its power capacity and use of three ports that can also be used with standard devices too can be just as reliable even if you don’t own a Quick Charge device.



The Output power capacity that you receive is going to depend on how many USB ports you’re using at the same time. It has two standard USB ports and a Quick Charge port too. The great thing about recharging this high capacity power bank is its use of Quick Charge.


It’s a large and heavy portable charger that is not meant for fitting into your pocket, rather for taking to a location and using it there.


It has some high-quality components that make it a premium experience to use.


On the reliable side of things, this portable charger does a good job of providing power for standard devices and Quick Charge devices. That said, if you do own a Quick Charge compatible device then it’s ultimately going to be more helpful.

More High Capacity Power Bank Reviews

Specs of the Vinsic 28000mAh Power Bank with 2 Smart USB Ports and Quick Charge:

  • Power Capacity: 28,000mAh
  • Output:  

Standard Speed: 5V/2.4A

Max Output of Standard Portion: 3.1A

Quick Charge Speed: 5V/3.0A | 9V/2.0A | 12V/1.5A

  • Input:    5V/2.0A | 9V/2.0A Via Micro-USB Input
  • LED Power Indicators: LCD Power Capacity Display
  • Size: 6.9 x 4 x 0.8 inches
  • Weight: 1.3 Pounds


High capacity power banks come in all types, and this Vinsic 28,000mAh power bank with 3 USB ports is an all-around type of charger.

As it has lots of power, uses Quick Charge along with standard ports, and also has an easy way to tell remaining power capacity with the use of an LCD.