Omars Power Bank 20000mAh USB C Portable External Battery with USB-C PD 45W & USB Quick Charge 18W, 2 Quick Charge Ports Output Portable Power Banks, Compatible for MacBook, MacBook Pro 13"

I bought this for a specific use - to power a Nintendo Switch when docked. A strange requirement perhaps, but this now lets me run the Switch when it's docked without needing a mains socket. I can therefore hook the Switch up to the TV that's installed in my camper van without requiring a mains supply (the TV is 12v and runs from a leisure battery). The battery pack lasts well, but do be warned that the recharging time is incredibly slow unless you have a powerful mains adapter - something like the power pack from a MacBook Pro, or any mains charger that supports higher voltages and current draw than your normal 2A 5v phone or tablet charger. If you use a low power charger like that, you'll be there for an age getting any power back into it. With my usb c MacBook Pro charger, it charges very quickly given the capacity of the battery pack. At this price, I'll probably get a second. I can't really fault this, it's a great item and the battery percentage display is much better than having just a few lights to show charge level. It's quite big, it's a little heavy, but if you need a powerful, long lasting battery that also support PD standards, then this is a steal at this price.

Initially this power bank charged impossibly quickly, the numerical indicator was shooting up in almost 2-3 second increments. It was also discharging incredibly fast. However after leaving it on charge for a couple of hours (30W PD supply) the charging indicator slowed down and became more as expected from about 60%. Eventually it reached 100% and when connected to my Surface Pro it didn't charge it. After pressing and holding the power button on the power bank for around 5 seconds however it did start to charge the tablet correctly and as expected. If the power switch is pressed and held for another five seconds while charging it then reverses the connection and will take charge from the laptop. In short let it charge to 100% before deciding to return it and if not outputting a charge then press and hold the power button for a bit. Big and heavy it is but also robust and does work.

I use the 10000 mAh version of this power bank to power a 12V circuit (via a USB-C PD trigger PCB) which powers a 12V light system I built for my electric scooter. I needed something fairly compact (small enough to fit in the front-mounted carry pouch), with PD output, and not be excessively expensive. I have also done limited testing, and can confirm it is also possible to trigger it to output 20V if you so desire a higher output.Out of all the powerbanks on Amazon, this seemed to be the best combination of features, power output, price, and size. Your runtime will vary drastically depending on your use case, with high power devices draining it very quickly. Even though I wish I'd gone for the larger capacity option, this one charges through the USB-C port, and can easily go from 40% to 100% in around 25 minutes.

Arrived quickly and in good condition and feels very solid. Metal case does seem easy to scratch though, so wish it came with a cover of some sort like Ravpower Battery cases do.USB Tester shows it delivers on the 45W, but considering its 20Ah capacity, I was expecting it to fully charge a dead laptop, but it only charged it overnight from 0 to 76%. (the laptop reports a capacity of 7.2Ah).Another thing to note, the USB-C cable supplied wouldn't fit the laptop connector, I was not prepared to force it and damage someones laptop, Amazons own brand cabled fit no issue as do Dells and Anker cables, so the issue here is the connector on the supplied cable.For the reasons of capacity and poor cable I've scored it 3 overall.

This power bank is really awesome. After spending quite a bit of time looking for an all-in-one external battery, I decided to try Omars power bank and I love it. It is made entirely out of metal, the craftsmanship is excellent and the device is lighter than I expected. It works perfectly with my MacBook Pro (2017 model) - it charges my laptop on the go. In addition to this, it charges my Galaxy S9 Plus very fast. Last but not least, the power bank has built-in LED display that indicated the capacity left in the battery in numbers. For example, other power banks have just tiny LEDs, so it's hard to understand if there is 25% or 5% left in the tank.All in all, this power bank has been working great and it exceeded my expectations. I can highly recommend it as it offers a lot of value for the price!

The unit weighs 560g , which might be too heavy for some, but for a powerbank that can fully charge your laptop you wont feel a big difference when you have your laptop in the backpack.Don't believe the percentage numbers, they are Voltage based and not the Wh drained.Past 1.5h of charging at 45W you get diminishing returns. It charges to real 90% in 1.5h and the last 10% it takes another 40min.In terms of efficiency it;s pretty good for the price.Type C - IN - 91.9% (78.3Wh to full charge)Type C - OUT- 88.2% (63.5Wh available for your Laptop after losses)18W USB - 86.1% (62Wh available for your phone after losses)5V 2.4A USB - 81.6% (59Wh available for your phone after losses)