JENTXON 20,000mAh Power Bank
Pros
- Has a High Power Capacity
- Good Build Quality
Cons
- Slow Charging through both ports
At Charger Harbor we believe in quality over quantity and that’s because the most vital parts of a power bank are the parts that nobody thinks about when they’re going to purchase a power bank and that is bad.
Since a power bank can boast a high power capacity and how it can charge devices multiple times to their full power and yet the charging speeds of its USB ports are very slow.
Knowing the specifications and not knowing the specifications will be the difference between owning a power bank that you find great versus it being mediocre.
This is the JENTXON power bank and it has a 20,000mAh power and most people are just amazed by its power capacity that they might just go ahead and purchase it, but that can be a mistake because the power bank has quite a few flaws with its other powering options that may make you think twice about purchasing this power bank.
Similar Power Banks:
Anker PowerCore 20100 Power Bank
Power
Power Capacity:
The power capacity of this power bank starts at 20,000mAh and the power is going through an average conversion rate because the Max Output of the power bank is only 2 Amps.
3.7 x 20,000 = 74,000 / 5 = 14,800
| JENTXON 20,000mAh Power Bank (Output Power Capacity = 14,800mAh) | Phone Capacity | JENTXON 20,000mAh Power Bank Left Over Capacity after One Charge Number of Full Charges for the Device |
|
|---|---|---|---|
| iPhone SE | 14,800mAh | 1,624mAh | 13,176mAh Left Over 9.1 Full Charges |
| iPhone 6 | 14,800mAh | 1,810mAh | 12,990mAh Left Over 8.1 Full Charges |
| iPhone 6 Plus | 14,800mAh | 2,915mAh | 11,885mAh Left Over 5.0 Full Charges |
| iPhone 6s | 14,800mAh | 1,715mAh | 13,085mAh Left Over 8.6 Full Charges |
| iPhone 6s Plus | 14,800mAh | 2,750mAh | 12,050mAh Left Over 5.3 Full Charges |
| Samsung Galaxy S6 | 14,800mAh | 2,550mAh | 12,250mAh Left Over 5.8 Full Charges |
| Samsung Galaxy S6 Edge | 14,800mAh | 2,600mAh | 12,200mAh Left Over 5.6 Full Charges |
| Samsung Galaxy S7 | 14,800mAh | 3,000mAh | 11,800mAh Left Over 4.9 Full Charges |
| Samsung Galaxy S7 Edge | 14,800mAh | 3,600mAh | 11,200mAh Left Over 4.1 Full Charges |
| Apple iPad Mini 2 | 14,800mAh | 6,470mAh | 8,330mAh Left Over 2.2 Full Charges |
| Apple iPad Mini 4 | 14,800mAh | 5,124mAh | 9,676mAh Left Over 2.8 Full Charges |
In the end, the power bank will have an Output power capacity of 14,800mAh and that means you’re able to charge lots of devices to their full power. Smartphones will have no problem charging to their full power with this power bank.
Even the high-capacity smartphones such as a Galaxy S8 can charge to their full power about 4.5 times, an iPhone 7 can charge to its full power 7 full times and a Google Pixel can charge to its full power 5 times.
If you plan on charging a smartphone only with this power bank, then there will be no shortage of power as it can last for days with just a single charge.
Power Capacity for Tablets
The power bank also has no problems when it comes to charging tablets because tablets such as the iPad Mini 2 or 4 and iPad Air can charge to their full power capacities about two times.
Output Charging:
There are two USB ports on the power bank and each of them has a charging speed of 5V/1.0A and the Max Output of the power bank is 2 Amps overall.
This is what we meant by looking at the specifications of the power bank is a vital thing to do because the charging speeds of this power bank are not at the level that they should be when it comes to high capacity power banks.
Since a charging speed of 5V/1.0A is not able to charge most devices at their max charging speeds because most newer devices can charge within the 2 Amp range and there are lots of smartphones that are compatible with Quick Charge. Both of those things that this power bank does not have.
When it comes to charging speeds this power bank does a mediocre job and it would do well by having an upgrade with each port having a charging speed of 5V/2.0A and the Max Output being 4 Amps because that way you’d be able to use somewhat fast charging speeds at the same time then.
Input Charging:
The JENTXON power bank uses a Micro-USB Input port to recharge and it has a 5V/2.0A recharging speed. If you’re using a 2 Amp USB wall charger or higher then the power bank can recharge to full power within 5-6 hours.
Design
Size and Weight:
The power bank is quite large and heavy, but it can practically be taken anywhere. However, it does have its limitations.
This power bank has a length of 6.4 inches, a width of 3.1 inches, and a thickness of 1 inch. The weight of the charger is 14.7 ounces. So it’s not going to fit into a pocket and it’s quite heavy. You can still take this charger anywhere that you want, it’s just that most of the time you’re going to be setting it down and charging your devices because of its bulkiness.
Functional Components:
Nearly all of the functional parts of the power bank are on a single side: On the short is where you’ll find 2 USB ports, a flashlight, and a Micro-USB input port. On the long side is where the power button is and on top of the power bank is where there are 4 Blue LED power capacity indicators.
You must press the power button for charging to start and you can hold down the power button to turn on the LED flashlight. Holding down the power button again while the flashlight is on will turn it off.
RAVPower 20,100mAh Power Bank with Quick Charge 3.0
Build
Structure and Material:
The build quality of the power bank is good and that’s because it has a plastic casing that makes it fireproof and it’s also drop resistant.
Tech:
The tech that comes with the JENTXON power bank is nothing special because it doesn’t make use of any special charging technologies. At least the power bank doesn’t have any heating issues when you’re charging two devices at once and you can even use Pass-Through Charging with this power bank.
Reliability
It’s a reliable enough power bank but it has its flaws when it comes to its charging power because each of the two ports has a charging speed of 5V/1.0A and most devices can charge faster than that. High capacity power banks, in general, are supposed to have faster charging speeds than low power capacity chargers.
That’s not the case here, so if you want your smartphone or any other device to charge at its max power then the JENTXON power bank is not reliable for that.
Jackery Black420 20,100mAh Power Bank
Summary:
Power:
It has a high power capacity that can charge lots of different types of devices to full power, but the charging speeds could use some work.
Design:
The power bank is large and bulky with its weight and most of the time you’re going to want to set it down to charge your devices.
Build:
It has a waterproof casing and also drops resistance.
Reliability:
The main thing that makes this power bank reliable is its power capacity because it has a lot of it. However, the power bank’s charging speeds are too slow to charge most devices at their max power.
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Specs of the JENTXON 20,000mAh Power Bank:
- Power Capacity: 20,000mAh
- Output:
USB Port 1: 5V/1.0A
USB Port 2: 5V/1.0A
Max Output: 5V/2.0A
- Input: 5V/2.0A Via Micro-USB Input
- LED Power Indicators: 4 LED Dotted Power Capacity Indicators
- Size: 6.4 x 3.1 x 1 inches
- Weight: 14.7 Ounces
Conclusion:
This JENTXON power bank has a lot to boast about when it comes to face value, however, other attributes such as charging speeds, size, and weight make this portable charger feel behind the times.
Buy from Amazon
Since 2016, Usman has flourished as an independent tech journalist, reveling in the evaluation of diverse tech gadgets, with a particular fondness for charging technology to ascertain product performance. Besides his journalistic endeavors, he helms the Charger Harbor YouTube channel, where he extends his tech insights to a broader audience.