(Last Updated On: December 4, 2018)

Most power banks that are under 20,000mAh don’t have very special charging powers. Sure some have 2 charging ports, but the most of the time the charging speed, and design are just downright mediocre.

Then there are times when those power banks are surpassed what they’re supposed to do. They rise from their assumed nature and become more powerful than what they should be.

Not only that, they take advantage of some great tech quality components that are able to offer a better charging experience.

This is the TeckNet 16,750mAh power bank and it’s one of the few portable chargers that is able to exceed expectations.

EasyAcc 2nd Gen. 15,000mAh Power Bank with Three USB Ports

Power

Power Capacity:

With the use of LG batteries, basically being on the same standard as Panasonic ones, and some fast charging to go with its initial power capacity fo 16,750mAh.

This power bank does a great job at optimizing its conversion rate even with its fast charging that would otherwise leave a much lower Output power capacity. As a result, you’re going to be left, on average about 14,200mAh of Output power capacity that you’ll be able to utilize very well.

This is because if you’re charging smartphones, then it’ll be able to charge them about 7-9 times to their full power capacities. If you’re charging Mini tablets like the iPad Mini 2 or 4, this TeckNet power bank is great for that too since it can charge them about 1.5 times.

Even if you charge a Mini tablet to its full power, then there’s still power capacity left to charge smartphones if you want to. Charging Full-Sized tablets can also be done, but it’ll take nearly the entire power capacity.

Ultimately the power capacity can last for a long time, and it doesn’t really matter what you’re charging. So long as it’s not a Full-Sized tablet, but even then, the power bank can do a great job at charging it to its full power capacity.

You can even charge laptops that take USB charging with this power bank like MacBooks and Chromebook Pixels to their full power capacities.

Devices	TeckNet PowerZen 2nd Gen 16,750mAh Portable Charger (Output Capacity = 14,200mAh)	Phone Capacity	TeckNet PowerZen 2nd Gen 16,750mAh Portable Charger Left Over Capacity after One Charge # of Full Charges for the Device
iPhone SE	14,200mAh	1,624mAh	12,576mAh Left Over 8.7 Full Charges
iPhone 6	14,200mAh	1,810mAh	12,390mAh Left Over 7.8 Full Charges
iPhone 6 Plus	14,200mAh	2,915mAh	11,285mAh Left Over 4.8 Full Charges
iPhone 6s	14,200mAh	1,715mAh	12,485mAh Left Over 8.2 Full Charges
iPhone 6s Plus	14,200mAh	2,750mAh	11,450mAh Left Over 5.1 Full Charges
Samsung Galaxy S6	14,200mAh	2,550mAh	11,650mAh Left Over 5.5 Full Charges
Samsung Galaxy S6 Edge	14,200mAh	2,600mAh	11,600mAh Left Over 5.4 Full Charges
Samsung Galaxy S7	14,200mAh	3,000mAh	11,200mAh Left Over 4.7 Full Charges
Samsung Galaxy S7 Edge	14,200mAh	3,600mAh	10,600mAh Left Over 3.9 Full Charges
Samsung Galaxy S8+	14,200mAh	3,500mAh	10,700mAh Left Over 4.0 Full Charges

Output Charging:

The charging speeds are highly optimized.

This is because each of the 2 charging ports is able to Output 5V/3.0A. 3 Amps of charging speed! The usual for most power banks is that they have a Max Standard charging speed of 5V/2.4A, but this TeckNet portable charger goes into the Anker category of power.

As a result, you’ll not only be able to charge all of your standard charging devices at their max charging speeds, you’ll also be able to charge USB-C compatible smartphones at their max charging speeds.

Even though this power bank doesn’t have Quick Charge, the charging ports come close to it and charging Quick Charge compatible smartphones will result in them as least being close to their max charging speeds.

If you’re charging laptops with this power bank, it’s best to do it when they’re off or Sleeping. Mostly because even though this power bank can charge laptops, it can’t do a very great job at it.

Overall Output:

Then there’s the Max Output of the charging. So you can really only take advantage of 5V/3.0A charging only when you’re charging a single device because the max Output of the power bank is capped at 3.4 Amps.

When the charging is being pushed to its limits, then each of the charging ports will be outputting 5V/1.7A.

Not too bad of a charging speed when it comes even to individual devices, but it’s important to remember that if you want your very fast charging speeds then it’s best to charge a device alone.

However, the charging speeds aren’t limiting at all, it’s just that they fluctuate.

Input Charging:

Recharging could be faster as the power bank is recharged at its max charging speed of 5V/2.0A and when you’re using a 2 Amp wall charger higher which is going to recharge it at its max charging rate, then it will be fully recharged within 10-12 hours.

Anker PowerCore 13000 Portable Charger

Similar Power Bank

Design

Size and Weight:

It’s the size that you’d expect a 16,750mAh power bank to be.

It has a length of 5.5 inches, a width of 2.9 inches and a thickness of 0.9 inches. The weight of the power bank can be quite heavy for some because it weighs 10 ounces.

If you’re holding the power bank, it’s actually not that bad, but the weight of it can begin to wane on you for long periods of time. So most of the time, you’ll find it fit to simply place it into a bag and take it with you.

Functional Components:

The functional parts are mostly all on different sides of the power bank but it doesn’t pose too much a problem since they’re all very close to together. So let’s start with the things that are on the sides.

On the long side of the power bank is where you’ll find the 2 USB Output charging ports and the power button. On the short side is where there’s the power button and LED flashlight. Finally, on top of the power bank is where there are 6 Blue LED power capacity indicators.

Charging automatically starts when you plug in a charging cable for the device that you’re charging. As a result, the power button is really meant for tapping once to check the power capacity and to turn on the flashlight by tapping it twice.

Also, the use of 6 LED power capacity indicators isn’t a very common thing but it’s a welcome addition.

Here’s how to tell the power capacity with the 6 LEDs:

• 6 LEDs:<15% 81-100%
• 5 LEDs:16-30% 61-80%
• 4 LEDs:31-45% 46-60%
• 3 LEDs: 31-45%
• 2 LEDs: 16-30%
• 1 LEDs: <15%

EasyAcc MegaCharge 16,750mAh USB-C Power Bank

Build

Structure and Material:

The entire TeckNet 16,000mAh power bank is made of Plastic, and there are 3 main pieces that are holding it together, with the top, bottom and centerpieces making it whole. Its build quality is similar to that of EC Technology and KMASHI portable charger.

To put it simply, don’t drop the portable charger and it should be good to go.

Tech:

It has a strong Tech quality background because it has safety protection that is able to prevent Short-Circuits and Surge protection. The usage of LG batteries is able to offer a better Output power capacity and longevity for the charger.

Reliability

The TeckNet power bank is highly reliable for lots of different chargeable devices.

By that we mean the power bank is able to accommodate lots of devices because it’s able to charge even Quick Charge and USB-C compatible devices at or at least near their max charging speeds. This is where the charging speed of 5V/3.0A is very helpful because it gives fast charging for standard and even laptops devices.

With that said, if you’re charging 2 devices at once, then its fast charging reliability falls quite a bit because the Max Output of the power bank is 3.4 Amps.

However, when you take into the account the power capacity, and even when charging is separated between charging ports, it’s still highly reliable.

Similar Power Bank

Jackery Black420 20,100mAh Power Bank

Summary:

Power:

The power capacity doesn’t suffer too much through conversion and this can be attributed to its use of LG batteries, as a result, the power capacity is highly useful no matter what device you’re charging. Charging speeds are great with the power bank reaching a new gen of speed at 3 Amps.

Recharging could be faster, though.

Design:

It has a manageable design, but it’s heavy. Charging automatically starts, so the power button is mainly used to check the power capacity and to turn on the flashlight.

Build:

Not the strongest build, because it’s not built for falls and such but the build is still solid. The use of LG batteries will make the original power capacity more constant.

Reliability:

Power banks like these are becoming the norm and that’s a great thing since almost all of its features are able to take charging to an optimal level for every device that you charge it with.

More Power Banks with Similar Power Capacities and Charging Power

Specs of the TeckNet PowerZen 2nd Gen 16,750mAh Portable Charger:

• Capacity:

Initial Capacity: 16,750mAh

Output Capacity: 14,200mAh

• Output:

Each Port: 5V/3.0A

Total Output: 3.4A

• Input: 5V/2.0A Via Micro-USB Input
• LED Power Indicator: Yes
• Size: 5.5 x 2.9 x 0.9 inches
• Weight: 10 Ounces

Conclusion:

The TeckNet PowerZen 2nd portable charger is a very welcome addition to the power bank arena. It’s bringing the power that a new generation is bringing and that’s what most customers need.

More devices that are being released are able to accept higher Amperages that will result in faster-charging speeds. Faster charging is all that really matters in the world of charging.