Review: CHOETECH 20,000mAh Portable Power Bank Charger

CHOETECH 20,000mAh Portable Power Bank Charger











  • A High power capacity that can charge smartphones multiple times.
  • Features Quick Charge 3.0, that can charge compatible devices at Quick Charge speeds.
  • A small enough size and light enough weight that it can be held in a single hand.
  • Has 2 Input ports. With one using Micro-USB and the other using Lightning.


  • The conversion rate could be better to provide more Output Capacity
  • One of the Output ports can only output 1 Amp.


Power banks with high power capacities such as those in the 20,000mAh – 30,000mAh range are able to offer better innovations in charging tech.

This is mostly because of their increased size and when a power bank has a higher power capacity, there needs to be tech innovations in order to improve on what can be done with the highly resourceful power. After all. What good is power if it has no real direction?

This is the Choetech 20,000mAh power bank and it features quite a lot of things that other high power capacity portable chargers also feature, and for really good reasons too. Let’s see how it matches up to those other ones in this Charger Harbor Review.

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Aukey 30,000mAh Power Bank with Quick Charge


Power Capacity

The power capacity starts at 20,000mAh and it’s really higher power capacity even with the Output capacity being lower. This Choetech portable charger doesn’t use any special charging tech to keep conversion rating from dropping, nor does it take advantage of Panasonic battery cells.

It’s going to depend on the way you’re using the charger as well, however, we’re gonna assume that most of the time you’ll be charging 2 devices at the same time, with the max Output charging speed being around 2.5A.

So with that, you can expect an Output power capacity of about 16,000mAh. We know that it’s quite a drop from the initial power capacity but it’s still very much enough to be used a lot.

A 16,000mAh power capacity is going to be able to charge most smartphones 4 times and more. If you’re solely using smartphones with this power bank then it will very well last for days or even weeks with constant power capacity ready to charge.

Tablets, on the other hand, can still fair very well if they’re charging alone because that way, power capacity won’t be split between devices. Most tablets can charge to their full power capacities and leave even more spare capacity left to be used if you’re recharging a tablet that has a lower than usual battery capacity.

DevicesCHOETECH 20,000mAh Portable Power Bank Charger (Output Capacity = 16,000mAh)Phone CapacityCHOETECH 20,000mAh Left Over Capacity after One Charge

# of Full Charges for the Device
iPhone SE16,000mAh1,624mAh14,376mAh Left Over

9.8 Full Charges
iPhone 616,000mAh1,810mAh14,190mAh Left Over

8.8 Full Charges
iPhone 6 Plus16,000mAh2,915mAh13,085mAh Left Over

5.4 Full Charges
iPhone 6s16,000mAh1,715mAh14,285mAh Left Over

9.3 Full Charges
iPhone 6s Plus16,000mAh2,750mAh13,250mAh Left Over

5.8 Full Charges
Samsung Galaxy S616,000mAh2,550mAh13,450mAh Left Over

6.2 Full Charges
Samsung Galaxy S6 Edge16,000mAh2,600mAh13,400mAh Left Over

6.1 Full Charges
Samsung Galaxy S716,000mAh3,000mAh13,000mAh Left Over

5.3 Full Charges
Samsung Galaxy S7 Edge16,000mAh3,600mAh12,400mAh Left Over

4.4 Full Charges
Samsung Galaxy S8+16,000mAh3,500mAh12,500mAh Left Over

4.5 Full Charges

Output Charging: Port 1: 5V/1A | Output (QC3.0 Port): 5V/3A | 9V/2A | 12V/1.5A

There are 2 ports on this power bank and both of them are on different spectrums of charging speed.

Port 1: 5V/1A

The first port offers a charging speed of 1 Amp and as a result, it’s a really slow charging speed. This port is meant for smartphones but even then it’s still not the best option to charge smartphones with this port if the another charging port is able to offer faster charging and it’s not being used by a tablet.

Overall, you should use this charging port if you’re charging a tablet with the other charging port and you’re being obligated to use this port.

Port 2: Quick Charge

This other port is more on standard with charging speed as it features it Quick Charge tech that is compatible with Quick Charge devices and able to charge them quickly.

The same goes for Non-Compatible Quick Charge devices as they can most likely charge at their max charging speeds as the Quick Charge port is also able to default to Max Standard charging speed of 2.4 Amps.

If you’re charging a Quick Charge compatible device, then charging speed will range from 3A, 2A, and 1.5A with increased Voltage even when Amperage goes down.

This power bank has Quick Charge 3.0 and even if you’re using a Quick Charge compatible 2.0 device, you can still use it with the Quick Charge port and it will charge it at Quick Charge 2.0 speeds.

Another cool thing is that even if you’re using a non-compatible Quick Charge device, the power bank will still be able to charge the device at its max charging speed.

This means that you can connect a tablet to this port and it will be able to charge at its max charging speed of 2.4A. For any other devices, you can expect a max charging speed as well.


Input Charging: Input (Micro): 5V/2.4A, 9V/2A | Input (Lightning Port): 5V/2.4A

Much like other high capacity portables chargers, this one has 2 Input charging ports. This is a great thing to have because there’s the traditional Micro-USB Input port and then there’s the unusual Lightning Input port.

Now iPhone users can use their Lightning charging cables to recharge this power bank. There’s no need for iPhone users to carry around a Micro-USB charging cable and now they’re free to be objective!

There’s really no difference between charging speeds if you use either and yes, YOU CAN ONLY USE ONE INPUT CHARGING METHOD to recharge this power bank. You cannot use both Input ports at the same time and we found that to be a real let down.

As long as you’re using a 2.4 Amp wall charger, then you’re going to be able to recharge this power bank within 8-9 hours. If you’re using anything lower, then you can very well be waiting a full 24 hours.

Similar Power Bank


Size and Weight


The size and weight of this power bank with a such a high power capacity isn’t actually that bad.

It has a length of 5.7 inches, a width of 2.9 inches and a thickness of 0.8 inches. It’s also not as heavy as we thought it would be with a weight of 12.5 ounces.

With that said, we can honestly say that if you’re charging a single device with this power bank, then you can hold it in your hand without it being too much of a nuisance.

However, if you’re charging 2 devices at once, then it’s best to set it down. Other than that, this power bank is actually really portable and if you want to make portability easier you can just put it into a bag.

Functional Components

User experience is quite straightforward and pleasant.

All the Input and Output charging ports are on a single short side of the power bank. There’s a power button and 4 LED Power capacity indicators on top of the power bank.

You need to press the power button for charging to begin and charging shuts off when there are no devices connected to the power bank. Charging also stops when devices that are connected to the power bank are fully charged.

EasyAcc 16,750mAh USB-C Power Bank



Structure and Material

The build quality of the power bank is really good as the charger has very few separate pieces that make it whole. With just a top, bottom and centerpiece to bring it all together. It’s all made out of plastic but even so, the power bank is able to hold strong even with daily use.

It’s not a rugged power bank it’s definitely good enough that you can use it nearly every day and it won’t be run down.


On the tech side of things, it’s basically like the structure and material of the power bank with it not offering anything too special.

It does have the usual safety tech that’s able to keep you and your devices safe and that’s really about it. There isn’t tech that really improves conversions, it’s just your run of the mill power bank.

Jackery Black420 20,100mAh Power Bank


It has really good reliability rating. This is because of its powering capabilities and good design aspects.

We know that it doesn’t have the fastest Output charging as one of the charging ports gives a slow 1 Amp charge but other than that, the power that you’re able to get from this power bank is amazing.

The 2 Input ports ensure that you’re able to recharge this power bank with either your Lightning charging cable or Micro-USB cable; If you’ve only got a Type-C cable then you have to get one of the two cables that it uses.

A power capacity that can last for days and a Quick Charge port that can quickly charge compatible smartphones and can charge non-compatible devices at their max charging speeds as well.

It’s not the smallest power bank, but for its power capacity and charging capabilities, we’re glad to say that you can actually walk with this if you can bear the size and weight.

Vinsic Slim 20,000mAh Power Bank



The power capacity can suffer a quite a bit and leave a chunk out of the Output power capacity, but even then it can charge smartphones plenty of times and you can even charge a tablet to its full capacity.

Charging speed could use some work with one of the Output ports but the Quick Charge port is able to offer optimum charging speeds. The power bank has 2 Input ports, and even though you can’t recharge the power bank with both Input ports, it’s still nice to have a Lightning Input port.


It’s actually not that large or heavy and you can very well hold in your hand if you’re charging a single device. You have to press the power button to begin charging.


The build is strong and sturdy and can be for everyday use. There’s nothing special about the tech build.


It’s a reliable power bank that has a high power capacity and some charging features that aren’t that common are most portable chargers.

More Power Banks that have Similar Power Capacities and Charging Power

Specs of the CHOETECH 20,000mAh Portable Power Bank Charger:

  • Capacity:            Advertised: 20,000mAh             Real Capacity: 16,000mAh
  • Output:   Port 1: 5V/1.0A  |  Port 2: 5V/3A, 9V/2A, 12V/1.5A
  • Input:

Input(Micro): 5V/2.4A, 9V/2A

Input(lightning port): 5V/2.4A

  • LED Power Indicators: 4 LED Dotted Power Capacity Indicators
  • Size: 5.7 x 2.9 x 0.8 inches
  • Weight: 12.5 Ounces


Most high capacity power banks are able to offer just the norm and the same can be said about this Choetech portable charger.

As it’s able to provide quite a lot of power capacity along with Quick Charging. One of the most outstanding things, though, is the usage of 2 Input ports, because now there isn’t a limit for iPhones users.

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