PowaStellar 27000mAh Power Bank with 140W PD3.1 Fast Charging

Affordable price and good quality product.

This is a genuinely insane power bank.

It features 140w power output from either USB-C port, I couldn't verify if it will do that out of more than one at a time as I just don't have that many high powered things to test it with. Everything I did test it with gave seriously impressive results that outstripped my expectations. Charging 2 laptops, at 60w and 60w and charging another power bank at 18w, yep this does seem to be possible despite it being above the theoretical output of the power bank. And it barely gets warm during this

It is capable of charging at 140w, which is insane, whilst simultaneously running 2 other devices from the output ports, at one point I managed to get it running a laptop at 87w, and charging up another power bank at 20w whilst also charging at 137w. This is nuts, a total power throughput of well over 200w, in a power bank!

The power bank itself is well made, solid aluminium, with a genuinely useful screen that shows run time, input and output powers for all the ports. It also usefully displays the cycle count and the power capacity of the battery. Not exactly sold on the point of the flashlight, for something of the power and capacity a couple more ports would have been a better use of any space. It's not going to win any awards for portability, it's chunky, but given the capabilities this is expected.

We live in an area that is prone to black and brown outs. It’s important for us to have reliable power banks when this happens. This power bank is extremely well made and powerful. Too heavy to carry around in a bag it is perfect for our emergency at home planning. Well made with all the ports we need and even includes a torch function. Highly recommend

I ordered this ZYRON Model ZY-PB-140W-STLR power bank as it looked good and I have experience reviewing similar power banks, and so thought that this would provide a good guide.The nominal capacity of the power bank was a whopping 27000mAh 99Wh which is certainly on the larger side.

The box came with the unit being partially charged to 81% which is higher than usual and I charged it to full for testing. It has an LED panel indicating the exact charge status and also showing port wattage and whether it's input or output which is very useful. The unit does not come with its own charging block (wall wart), but with USB-C ports being ubiquitous now, this is a good thing.

The power bank has the following ports
> 1 USB-A port which is an output
> 2 USB-C ports which functions as both an in and out

The rating plate says 27000mAh 99Wh which is the nominal value.

I carried out a bit of personal testing and found the below:
+ It functions smoothly with consistent results
+ I was able to draw above 3A continuously without any distress to the unit
+ the obtainable capacity is less than the advertised which is common with powerbanks due to losses / efficiency
+ Discharging fully from 100% to 33% I was able to get 6133mAh, 31.22Wh which suggests it supplying a charge of close to 50Wh (assuming linearity)
+ When connecting it back on charge it pumped up the voltage to quickcharge at 20V 35W
+ Recharging fully from 3% back to 100% I was able to pump in close to 74Wh

I found the USB-C output port supports the protocols:
* PD3 PD3.1 140W PDO:9
* Apple 5V 2.4A
* BCE 1.2 5V 1.5A
* QC2.0 5V 9V 12V
* QC3.0 12.18V Max

The USB-A supports
* No PD support (only USB-C is PD)
* Apple 5V 2.4A
* BCE 1.2 5V 1.5A
* Samsung AFC 9V 12V
* Huawei FCP 5V 9V 12V
* Huawei SCP 3.4 - 12V @ 20W
* QC2.0 5V 9V 12V
* QC3.0 12V Max

Pros:
+ Whopping capacity
+ Charges nearly everythign you plug into it
+ LED power display, portwise display, in/out indication
+ Multi protocol support (see above)
+ Great Build
+ LED Display showing percentage remaining charge
+ Brand Name is on device
+ Charges at very high power input (90W)

Cons:
- on the heavier side (not for the pocket) easy for the laptop bag

I found this power bank to be very convenient. It charged all the devices I tried without any issues, and supported fast charging when compatible. It charged my Dell laptop at a whopping 90+ W which is the highest I've gotten from a power bank. I've attached some photos from my testing. I d definitely recommend this product.

This power bank charges my laptop, phone, and tablet super fast. The 27,000mAh capacity lasts all day, and the smart display is handy to monitor battery life. Perfect for travel and work on the go!