Review: iClever 21,000mAh USB-C Power Delivery Portable Charger

iClever 21,000mAh USB-C Power Delivery Portable Charger











  • Has 30W of Charging with its USB-C Power Delivery Port
  • Features Quick Charge, so there are two main powerful charging technologies on this charger
  • Can recharge with USB-C Power Delivery


  • A 21,000mAh Power Capacity is quite low when it comes to Power Delivery Portable Chargers

Portable charger these days are one of the most innovative charging electronics that you can own. It’s not only because you can charge your devices while you’re on the move, even though that’s basically the main reason that portable chargers are popular. But it’s also what comes with the portable charging that makes using a power bank a lot more worth it now.

Most portable chargers when they first came out usually would just have two regular USB-A ports used for charging a smartphone or a tablet.

Now power banks are capable of more than just that, and this iClever 21,000mAh goes to show that you can do more than just charge your smartphone. As this iClever portable charger feature USB-C Power Delivery, Quick Charge and it even has a Lightning input port. There’s quite a lot going on with this power bank, so let’s take a closer look to see if this is the best Power Delivery power bank that you should purchase.


Power Capacity:

The power capacity of most Power Delivery portable chargers is very higher and that’s because when you use Power Delivery, the conversion of power from the power bank can actually lessen. As faster charging worsens the conversion of energy through the charging cable and increases in heat. In this case, this iClever portable charger does have a high power capacity, but it’s not on the same level as RAVPower’s 26,800mAh Power Delivery portable charger.

That said, let’s see just how much of its power capacity you’re actually able to use.

3.7 x 21,000 = 77,000 / 5 = 15,400

Enough Power Capacity?

Most of the time you’re going to be receiving a power capacity of 15,000mAh that you can actually use towards charging your devices. This is still a good amount of power capacity, we thought that it would better to have a higher one though. As the use of Power Delivery with this power bank means that you’re likely going to charge larger devices such as laptops that use USB-C. Such as the MacBook that now uses USB-C Power Delivery.

So if you’re charging laptops with this power banks, the power capacity can last you for about two full charges. That said, it’s really only that many charges if you’re charging just the laptop. As there is actually three output charging ports on this power bank. Something that we’ll get to in the output charging section.

Charging smartphones with this iClever power bank is able to offer a better experience with the portable charger and that’s because most smartphones these days have 3,000mAh batteries. So you charge them to full about 5 times with this power bank.

Overall, the power capacity of this charger is pretty good but at the same time, it’s not really enough to last for a few days. Especially if you’re charging multiple devices at once.

DevicesiClever Power Delivery Portable Charger(Output Capacity = 15,000mAh)Phone CapacityiClever Power Delivery Portable Charger Left Over Capacity after One Charge

# of Full Charges for the Device
iPhone SE15,000mAh1,624mAh13,376mAh

9.2 Full Charges
iPhone 615,000mAh1,810mAh13,190mAh

8.2 Full Charges
iPhone 6 Plus15,000mAh2,915mAh12,085mAh

5.1 Full Charges
iPhone 6s15,000mAh1,715mAh13,285mAh

8.7 Full Charges
iPhone 6s Plus15,000mAh2,750mAh12,250mAh

5.4 Full Charges
Samsung Galaxy S615,000mAh2,550mAh12,450mAh

5.8 Full Charges
Samsung Galaxy S6 Edge15,000mAh2,600mAh12,400mAh

5.7 Full Charges
Samsung Galaxy S715,000mAh3,000mAh12,000mAh

5 Full Charges
Samsung Galaxy S7 Edge15,000mAh3,600mAh11,400mAh

4.1 Full Charges
Samsung Galaxy S8+15,000mAh3,500mAh11,500mAh

4.2 Full Charges

Output Charging:

Charging with his iClever power bank is the best part of it because it uses three Output charging ports.

USB-A Ports

There are two USB-A ports on this power bank. One USB-A port features Quick Charge 3.0, so it’s useful for charging Quick Charge compatible smartphones at their max charging speed. While the other port has a standard charging rate of 5V/2.4A.

It’s awesome that this power bank not only uses Power Delivery but another fast charging technology that those with compatible devices can use. At the same time, the use of Quick Charge is another reason that this power bank should have a higher power capacity as it’s also not good for converting power capacity for charging.

The standard port on this power bank also has a good charging speed, and you can also use Non-Compatible Quick Charge smartphones with the Quick Charge port and they will also charge at 5V/2.4A.

Quick Charge Speeds: 3.6V-6.5V/3A | 6.5V-9V/2A | 9V-12V/1.5A

USB-C Power Delivery Port

The USB-C port on this power bank is the main that you’re going to be purchasing this portable charger for in the first place. As the Power Delivery charging is able to output 30W of charging power. 30W of charging power is good and will charge your Power Delivery smartphones, tablets, and laptops at a fast charging speed.

At the same time, there are still power banks on the market that feature faster Power Delivery charging, such as iMuto’s Power Delivery portable charger that has 45W of Power Delivery charging. There is indeed Power Delivery compatible devices that are able to charge faster than 30W, such as MacBooks and Chromebooks too.

Power Delivery Charging Speed: 5V-9V/3A |12V/2.5A | 15V/2A | 20V/1.5A

Input Charging:

Recharging this power bank is what you should expect from the portable charger that uses Power Delivery and that would be the USB-C port also being used as an input for recharging. Not only that, but this power bank uses Power Delivery for recharging at 30W, too. That said, you’re going to need a USB-C Power Delivery wall charger to recharge it at Power Delivery speeds, and a USB-C charging cable which you might already own.

The one other input port on this power bank that we found to be quite cool, is the Lightning input. Most of the time when it comes to having two input ports, it’s always a Micro-USB and a USB-C. The use of a Lightning input is cool because this power bank is gearing itself towards those that own MacBooks that now uses USB-C. Another device that MacBook users may have are iPhones, so you can use your USB-A to Lightning cable to recharge this power bank through its Lightning input port.

That said, the Lightning input has a recharge rate of 5V/2.0A. Also, just something to know if you own an iPhone X or iPhone 8, is that you can recharge them at Power Delivery speeds, with the USB-C port by using a USB-C to Lightning charging cable.

Power Delivery Recharging Speed: 5V-9V/3A |12V/2.5A | 15V/2A | 20V/1.5A


Size and Weight:

The size of most Power Delivery portable chargers is going to be large, that is no different with this charger. As it has a length of 7.1 inches, a width of 3 inches and a thickness of 0.8 inches. The weight of this charger is 1.1 Pounds. Dinefitely quite large and not really something that you’re going to carry in your hand all the time to charge your smartphone. As most of the time, you’re going to be setting this power bank down and charging your devices.

Even with its large size and weight, it can still be taken anywhere that you want.

Functional Components:

This power bank is easy to use, with all the charging ports being on a single side. On the long side of this power bank is where you have the power button and on top of the charger, there are four Blue LED capacity indicators. You have to press the power button to begin charging through any of the ports.

Under the Lighting input, there’s a LED flashlight, because why not? You can turn it on by double tapping the power button twice.


Structure and Material:

The build quality of this power bank is quite good but it’s nothing too special. It holds well and the charging ports on this charger feel great to use with the charging cable that you use with them.


This charger does get warm while you’re using the Power Delivery charging power and that’s quite normal with most power banks that use Power Delivery.


You shouldn’t get this iClever portable charger if all you’re using it for is the USB-A ports, as the main reason that it’s priced is that of the Power Delivery usage. That said, if you are in the market for a Power Delivery portable charger, then this iClever power bank is an alright choice and if you can make use pf the two USB-A ports then that’s even better. As there’s a Quick Charge port that can charge compatible devices their max charging speed.

To make it even better, we’d say that this power bank is most reliable if you’re an Apple product type of person that owns a USB-C MacBook and the iPhone as this power bank uses a Lightning input port.



The power capacity should be higher to accommodate for the use of Power Delivery charging. A Lightning input port is very welcome and is useful for most of the people that are using this power bank that own an iPhone.


It’s quite a large portable charger that is over half a foot long and a pound heavy. Easy to take anywhere with you but you’re likely going to just place this charger down.


The build quality of this power bank is quite good but it does get warm if you’re using the Power Delivery charging.


It’s a very reliable portable charger if you’re getting it because of the Power Delivery charging, and it’s even better if you‘re going to be using the USB-A ports.

Specs of the iClever 21,000mAh USB-C Power Delivery Portable Charger:

  • Capacity:

Initial Capacity: 21,000mAh

Output Capacity: 15,000mAh

  • Output:

USB-C Power Delivery: 5V-9V/3A |12V/2.5A | 15V/2A | 20V/1.5A

Quick Charge USB-A Port: 3.6V-6.5V/3A | 6.5V-9V/2A | 9V-12V/1.5A

Standard USB-A Port: 5V/2.4A

  • Input:

USB-C Power Delivery Input: 5V-9V/3A |12V/2.5A | 15V/2A | 20V/1.5A

Lightning Input: 5V/2.0A

  • LED Power Indicator: 4 Blue LED Power Capacity Indicators
  • Size: 7.1 x 3. x 0.8 inches
  • Weight: 1.1 Pounds


This iClever portable charger just goes to show how far portable chargers have come as this charger uses Power Delivery, Quick Charge, a Lightning input and a Power Delivery input that can be used to recharge this power bank

[USB C PD Portable Charger] iClever 21000mAh USB C Power Bank, Power Delivery 30W USB Type-C Portable Charger with USB 3.0 Quick Charging for Samsung Galaxy S9 / S9+, Nintendo Switch, MacBook 2016

 out of stock
as of September 28, 2022 2:14 pm


  • [Incredible Power Capacity]: Dead devices are a thing of the past. The powerful 21000mAh lithium battery can charge your devices over and over without needing to be recharged. You’ll be able to charge your iPhone 8 Plus 5.8 times, iPad mini 4 3 times, and other devices time and time again
  • [Powerful PD Type-C Output & Input]: Charges all type-c devices with up to 30W, fully recharged itself in only about 3.5 hours with type-c port
  • [Designed with Apple Users in Mind]: Calling all Apple fanatics! The iClever 21000mah Power Bank contains a lightning port so that you can recharge the bank with the same cable you use for your iPhone or iPad. You won’t have to worry about the bank dying at an inopportune time— you’ll always have a convenient way to give it some juice
  • [Premium Smart ID & Quick Charge 3.0 Technology]: Thanks to the two standard USB ports, you’ll be able to charge multiple devices simultaneously. The SmartID port recognizes your devices and adjusts to optimal charging settings, and the Quick Charge port cuts your charging time in half
  • [Safe for You, Safe for your Electronics]: This power bank is equipped with multiple protection mechanisms that keep your devices safe in the event of power surges, short circuits, overcharging, and more. It’s also explosion proof and extremely temperature resistant— it can withstand extremely cold (as low as -4° F) and extremely hot (140° F) temperatures