Aukey PB-Y14 & PB-Y36 Battery Reviews: Simple & Huge

Aukey has been in the portable power bank game for years now, and now everyone has one, and if they don’t, they should. Even if your phone has enough juice to get you through a day or more, having a portable battery in your car, your bag etc is just a nice safety net. So when they sent me two batteries, a 10,000mAh battery and a 20,000mAh battery to review, I was a bit torn on whether I should review them, because I already have loads, but these are pretty great.

Aukey PB-Y14, PB-Y36
  • High capacities
  • USB-C charging on both
  • Well built
  • PB-Y14 charges itself slowly
  • Not the cheapest batteries out there.

Aukey PB-Y14 – Amazon UK – £39.99

Aukey PB-Y36 – Amazon UK – £29.99


This review is for both the 10,000mAh PB-Y36 and the 20,000mAh PB-Y14. Aukey provided these batteries for review but have no say in the outcome of the review nor are they seeing it before it goes live.
Aukey review
From left to right, PB-Y36, Realme 6, PB-Y14, Amazon Fire 7


  • PB-Y36
    • 105x51x25mm
    • 195g
    • 1x USB-C -USB-PD
      • Input power
        • 5V 2A
        • 9V 2A
        • 12V 1.5A
      • Output Power
        • 5V 3A
        • 9V 2A
        • 12V 1.5A
    • 1x USB-A – QC3.0
      • 5-6V 3A
      • 6-9V 2A
      • 9-12V 1.5A
    • 10,000mAh/ 37Wh
  • PB-Y14
    • 200x96x14mm
    • 435g
    • 1x MicroUSB – Input
      • 5V 2A
    • 1x Lightning – Input
      • 5V 1.5A
    • 1x USB-C Input/Output
      • 5V 3A
    • 3x USB-A Output
      • 5V 3A
    • Low power 60mA mode for small devices

This is a double review, because, let’s be real these are just batteries, I don’t need to review each of them separately when the only real difference is the number of ports on them and the battery capacity. These are clearly for two different people, the PB-Y36 is for people who want enough juice to top their phone up 2 or so times and is easy to pocket. The PB-Y14 is for the person that everyone asks for a charge, often forgets their own cable and has to refill somewhere else and will slip into a bag no problem.

Aukey battery review

The PB-Y36, the 10,000mAh battery is interesting to me because unlike older battery banks, this actually uses 21700 cells inside rather than the older 18650s. What do those numbers mean? Not a whole lot. They tell you the outer dimensions of the cells, so an 18650 is 18mm diameter and 65mm tall, whereas a 21700 is 21mm diameter and 70mm tall. 21700s are newer cells (popularized by Tesla in the Model 3 and Model Y) which, due to their larger size than 18650s can have more capacity. Meaning you’d need less 21700s for the same voltage and capacity than you would 18650s. The PB-Y36 has 2 of these cells to get to the 10,000mAh rated capacity meaning that each cell is a little over 5000mAh each. All this is to say, that the PB-Y36 is pretty damn small, I’ve had it in my front pocket and whilst at 25mm it’s chunkier than almost every phone from the last 2 decades, it’s still not uncomfortable.

Aukey battery Review

The PB-Y14, on the other hand, is the complete opposite. Instead of using cylindrical cells like 18650s or 21700s, the PB-Y14 uses a pouch cell, like what is seen in most phones and EVs. These can be made to any shape or size within reason, so Aukey decided to make one the size of a small tablet pretty much. The PB-Y14’s 20,000mAh capacity is ridiculous if you have an iPhone 11 Pro that is 6.5 full recharges, on something with a larger battery like the monstrous 6000mAh in the ROG Phone 3, that’s just under 3.5 full recharges. Or, think of it this way, if you went to the park with a group of 4 friends, all of you within reason could charge your phones at the same time likely with some capacity to spare.

Aukey Battery Review

So next is the port selection, and this is where it’s more obvious that these are for two different types of people/scenarios. The PB-Y36 has 2 ports, a USB-C and a USB-A. The USB-C can be used for Charging the battery or charging your device, the USB-A port is only for charging a device. Both ports output the same max power but the USB-C port is a fixed V/A stepping whereas the USB-A port and the Qualcomm QuickCharge 3.0 controller does voltage curves, the first one being 5-6V, then 6-9V and finally 9-12V, USB-PD is just 5,9,12 in this case. The PB-Y14 has 3 USB-A ports, a USB-C port a MicroUSB port and a Lightning port. Only the USB-A ports and the USB-C are for charging devices. The USB-C, MicroUSB and Lightning ports are for charging the battery itself. The Lightning port is the slowest topping out at 7.5w, topping up that 20Ah cell is going to take a long time. MicroUSB tops out at 10w, and USB-C at 15w. All the USB-A and USB-C ports output 15w of charging, so whilst not blazing fast, faster than older generation batteries.

Aukey Battery Review
This isn’t even all of them

Recharging both of these is a different story. The PB-Y36 chargers over USB-C at 18w, Aukey state this will take 3 hours to fully recharge. The PB-Y14 will take 10 hours to recharge, but I do not know over which port and at what speed they are taking this figure from. Sure it is only 15w instead of 18w, and it is double the capacity, but 10 hours is not double 3 hours. The PB-Y14 and PB-Y36 also have a cool trick up their sleeves, a low power 60mAh starter mode for low power devices like earbuds, fitness trackers etc. ever had a small device like those not charge because the battery turns off? That’s because the device is pulling so little power the battery thinks nothing is attached so it turns off.


Both of these are great batteries for different people. Both are very worth buying if you know what you want. I would personally buy the PB-Y36, and at £30 it is a pretty inexpensive battery for what it offers. The PB-Y14 is a little harder for me to recommend unless you are always the person charging other people’s phones or routinely forget to charge your battery bank, at £40 it is a bit more expensive, but also a lot more unwieldy than the PB-Y36 is.

Aukey review

For the PB-Y14 to be more worth it I would have loved to see the USB-C port take and give out 27w USB-C, you can charge your stuff fast, but also recharge the unit itself in a decent amount of time.

About Domenico Lamberti

Technology has been a big part of my life for years, whether it be ripping the family computer apart to see how it worked, playing with the new phones that Dad brought home from work. Senior Reviewer for MTT.

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