Most 2-port power banks are able to offer a far better charging experience than most 1-port power banks, assuming that they have a higher power capacity.
This is because when there’s 2 port with a portable charger, not only is the power capacity higher but everything else like the charging speed and the functional components are neat to use.
These kinds of portable chargers are expected to provide a better charging experience simply because there’s more to be done with their larger sizes and possibility of better charging tech.
This is Jackery Fit Premium that we’re reviewing today, it has two ports and quite a high power capacity. It’s also surprisingly small for what it’s offering. Let’s take a look if all the things it offers is really able to bring something of value to the table.
Power Capacity: Original: 10,200mAh Output Power Capacity: 9,000mAh
The power capacity can’t exactly place the power bank into the “High Capacity” category but it’s definitely enough to consider the charger to last long. It’s a 10,200mAh power bank charger and you can expect an Output power capacity quite close to the original capacity because of the use of Panasonic battery cells.
You’ll be able to get a real power capacity of 9,000mAh, not only because Panasonic battery cells are great at converting energy but also because the Overall charging speed of the power bank isn’t all that fast, but we’ll get to that later.
So with the average power capacity being 9,000mAh, there’s quite a bit you can do. Especially when it comes to charging smartphones, because if you have iPhones, then you can expect to get 3 full charges or more.
With Android devices you can expect the same amount of full charges, even with smartphones like the Samsung Galaxy S7 with a battery capacity of 3,000mAh; so it’s going to be able to charge it 3 times over.
As for a tablet, if you’re going to want to charge your iPad Mini 2 or 4 versions, then you’re going to be relying on about half of the power capacity to charge them to full.
As for high-grade iPads or tablets with even higher battery capacities like the iPad Air 2, it’s going to take the entire power capacity of the Jackery Fit premium to charge it to full.
This means that you can’t be charging another device with a tablet if you want the tablet to charge near or at full capacity, otherwise some power will be going to the smartphone and to the tablet.
Overall, the Output power capacity of 9,000mAh should be able to last you for days if you’re using it to charge a smartphone, but it’ll only be able to last a single day if you’re using a tablet with it.
|Devices||Jackery Fit Premium 10200mAh Power Bank (9,000mAh)||Phone Capacity||Jackery Fit Premium 10200mAh Power Bank Left Over Capacity after One Charge
# of Full Charges for the Device
5.5 Full Charges
4.9 Full Charges
|iPhone 6 Plus||9,000mAh||2,915mAh||6,085mAh
3.0 Full Charges
5.2 Full Charges
|iPhone 6s Plus||9,000mAh||2,750mAh||6,250mAh
3.2 Full Charges
|Samsung Galaxy S6||9,000mAh||2,550mAh||6,450mAh
3.5 Full Charges
|Samsung Galaxy S6 Edge||9,000mAh||2,600mAh||6,400mAh
3.4 Full Charges
|Samsung Galaxy S7||9,000mAh||3,000mAh||6,000mAh
3 Full Charges
|Samsung Galaxy S7 Edge||9,000mAh||3,600mAh||5,400mAh
2.5 Full Charges
Output Charging: Per Port: 5V/2.4A Max Output: 5V/2.4A
This is where you shouldn’t be tricked by labels. This power bank charger has 2 USB charging output ports that are both labeled to have a charging speed of 5V/2.4A, which is true.
Either port can deliver a charging speed of 2.4 Amps, but what’s not clearly told is that the Max Output of the power bank is 2.4 Amps. This means that you can’t have an Output of 2.4A from each of the ports at the same time because altogether the charger can only achieve a 2.4A output altogether.
So you can’t charge two tablets at their max speed, and if you were to connect 2 tablets to the Jackery Fit, the fastest they’d be able to charge is at 1.2A per tablet. So to charge a tablet at its max speed, you’d have to connect it to a port and have nothing else connected to the other USB charging port.
The same goes for smartphones. If you want to charge your smartphone at its max speed, then you should consider only charging it alone with only 1 port being used with the power bank.
Otherwise, if you were to connect two smartphones to the Jackery, then they’d be charging at 1 Amp each, most likely. Although this isn’t to say that the power bank is at fault for using 2 USB Output ports.
If you really want to charge 2 devices at the same time, the option is there to do so. if you do so, then you should really only do it with 2 smartphones because they’d at least be able to charge to their full capacities and at an intermediate charging speed.
Overall charging Speed is Good but not the Best
We just think when a power bank does have 2 charging ports, that the total Output Amperage should at least be 3.4A to allow for moderately fast charging most of the time. Or even better, the max output should be 4.8A, for max charging speed at nearly all time. In this case, the Jackery Fit Premium falls short on its power delivering capabilities.
Input Charging: 5V/2.1A
The power bank is recharged through a Micro-USB Input port and able to charge at a max speed of 2.1A. So we highly recommend using a wall charger that is able to Output 2.0 Amps or more.
In this case and basically universally, we here at Charger Harbor highly recommend using a 2.4 Amp wall charger for all your charging purposes.
This because it provides the optimum amount of Amps to recharge a power bank at its fastest speed, if you’re charging a device directly from a USB wall charger, then you’re going to be able to get its max charging speed.
Size and Weight:
This is one of the strongest points this power bank has to offer. We mentioned that it was quite good at its power capacity and mediocre at its charging speed but when you input its portability, the design is actually quite good.
The length of the Jackery Fit Premium is 3.9 inches, the width is 2.5 inches and it has a thickness of 0.8 inches. It’s a small power bank, but its weight is what can make it seem quite big at 7.4 ounces.
With that said, the power bank can be used in your hand if you’re comfortable with the weight, and it can even fit into your pocket if you have a large enough pocket. Overall, it can be used on you and be carried with you at nearly all times but the alternative is to put it into a bag and use it once you’re at a single location.
Portability isn’t really a problem with the Jackery Fit.
The functional components are really easy to find and use and they’re all nearly on the same side.
The Micro-USB Input, both of the USB Output Ports and the LED Flashlight are all on the same side. The power button is on the long side of the charger, and there are 3 LED power indicators on top of the power bank.
How Charging Works with the Jackery Fit Premium
To begin charging your devices, you have to turn on the power bank, and that’s done by pressing the power button once.
If you want to turn off the power bank, then all that you need to do it unplug all the devices that are connected to the charger. It’s a good design, but we’re really left wondering why the Jackery Fit doesn’t just automatically begin charging once a device is connected to it.
Best to Conserve Power
Turning on the flashlight is done by tapping the power button twice, and to turn it off you just tap the power button twice again.
It’s pretty good flashlight but its distance can only go about 2 feet ahead of you and like always, we really don’t see the use of a flashlight with most power banks; unless they’re rugged ones like the EasyAcc or the RAVPower ones since those were made to go into the wild.
So if you want to conserve as much power capacity for charging your devices, then using the flashlight may not be an ideal thing to do.
The LED Power Capacity Indicators
Checking how much power capacity is left on the charger can be done just by tapping the power button.
The three LED power capacity indicators follow a similar design scheme like on many of other Jackery products like the Jackery Bar Premium. When you’re using the power bank, the LED lights turn on to display however much power there is left on the charger.
When it’s being recharged, then, however, much power capacity it’s filled up to, that LED light blinks and once it reaches a certain power level, the blinking light will turn solid.
Similar Power Bank
Structure and Material:
The Jackery Fit Premium is separated into 3 parts. The Large center Aluminum body and the two side panels are made of plastic.
It’s a structurally strong power bank with the Aluminum center having a plastic reinforcement case that can withstand light shock damage from falls. Overall, it’s not the strongest power bank around, so don’t go around dropping it, and it’s especially not waterproof or dustproof. Just a normally structured charger that can withstand daily use.
On the inside is where more of the important aspects are, with the Jackery Fit taking advantage of plenty of safety tech features.
These features are Short-Circuit prevention, Temperature Control, and Overcharging protection so the power bank shuts off automatically once a device is fully charged.
The use of Panasonic battery cells is the most welcoming build aspect because Panasonic battery cells are responsible for the great conversion rate and they’re able to last longer than traditionally used batteries.
This power bank is as intermediately reliable as it can get. It can provide enough power capacity to potentially last for days, especially if you’re only using it to charge smartphones. The charging speed isn’t what you’d expect, with it only being able to Output 2.4 Amps.
It’s actually a really portable power bank that can be on you at all time since it’s not that big.
As a result, it can even fit into your pocket. Although if you’re not comfortable with the size and weight, then you can always place it into a bag.
Altogether, the really only unreliable aspect is the charging speed. If you’re charging two devices at the same time, then they’re most likely NOT going to charge at their max speeds. If you want to charge a tablet to its full capacity and at its max charging speed, you must charge it alone.
But then there’s the case of actually having the ability to charge 2 devices at once anyway. So, it’s a matter of preference, it’s just that charging a single device with this charger is going to provide a more reliable charging speed experience.
The power capacity is real with an Output power of 9,000mAh, which is just 1,000mAh lower than the original. The charging speed could use some work with it only delivering an Output of 2.4A.
Charging two devices at the same time is going to provide slow charging for both devices. Charging a single device at a time is the best option.
It’s a small charger with a moderately heavy weight, even so, it can still be held in your hand or even fit into your pocket. If not, then putting it into a bag will yield no problems.
The functional components are easy to find and use. The charger automatically stops charging when the device it’s charging is full or unplugged and yet it doesn’t automatically begin charging.
The center Aluminum casing is tough and has a plastic reinforcement layer underneath. The use of Panasonic battery cells make the conversion rate really good and makes battery cells last longer.
It’s a reliable portable power bank simply because of how portable it can be and what it can offer. The charging speed may not be that great with both ports being used but at least the option is still there.
Specs of the Jackery Fit Premium 10200mAh Power Bank:
- Capacity: Advertised: 10,200mAh Output Capacity: 9,000mAh
- Output: Max Output: 5V/2.4A
- Input: 5V/2.1A via Micro USB Input
- LED Power Indicators: 3 LED Power Capacity Indicators
- Size: 3.9 x 2.5 x 0.8 inches
- Weight: 7.4 Ounces
The Jackery Fit Premium has two charging ports and yet it doesn’t offer anything that new. It really goes to show that just because you have 2 charge ports, there’s not much of anything that needs to be offered.
The charging speed is a real disappointment but when you consider the portability and the option of charging 2 devices at once; things start becoming clearer on how minimalistic functions can be better at times.