Phones, head torches, camp lights, the camera: most of what we carry charges by USB now. On a trip we need a power bank that can top it all up a few times before it needs charging itself.
Featured inBest Camping Power Banks of 2026
The Kings 20,000mAh Lithium Portable Power Bank holds 72 Wh, has three USB ports and shows on a screen what’s going in and out. I’ve been using it alongside two other power banks, so I can compare.
What You’re Getting
A 20,000 mAh (72 Wh) lithium power bank from Adventure Kings with two USB-A outputs, a USB-C port with up to 45 W output, an LCD screen, a built-in torch and a Low Power Mode. It comes with a USB-C to USB-C cable.
The good
- LCD screen shows battery status, volts and amps
- Almost 4 full charges of an iPhone 16
- Built-in torch
- Low Power Mode for small devices
- Comes with a USB-C to USB-C cable that works well
- 45 W USB-C output and three USB ports
The not-so-good
- Scratches easily
- On the heavier and larger side at 377 g
- Slightly expensive at about $100
Quick Specs
| Spec | Details |
|---|---|
| Brand | Adventure Kings |
| Model | YN-050M (SKU AKEP-PWRBANK20_01) |
| Weight | 377 g |
| Dimensions | 180 × 80 × 22 mm |
| Capacity | 20,000 mAh at 3.6 V / 72 Wh |
| Outputs | 2 × USB-A1 × USB-C |
| USB-A output | 4.5 V/5 A5 V/4.5 A9 V/2 A12 V/1.5 A |
| Inputs | USB-C (up to 30 W)Lightning compatible (5 V/3 A, 9 V/2 A) |
| Recharge time | About 3 to 4 hours with a 30 W charger |
| Display | LCD: battery statusVolts and amps |
| Included | USB-C to USB-C cable (rated up to 60 W) |
| Warranty | 1 year |
| Extras | TorchLow Power Mode |
| USB-C output | Up to 45 W (5 V/3 A, 9 V/3 A, 12 V/3 A, 15 V/3 A, 20 V/2.25 A) |
The LCD screen
This is the best part of the power bank. The built-in LCD screen shows the battery status as a percentage, plus the volts and amps going through it. That’s really handy for keeping track of your power consumption: you can see how fast a device is charging and how much is left.
Most power banks only have a few LEDs that tell you roughly a quarter, half or full. With a percentage you know exactly where you are, which helps when you’re deciding in the evening what to charge and what can wait until the car is running again.
The volts and amps are just as useful. Plug a phone in and you can see straight away whether it’s fast charging or only trickling along, and when the amps drop to zero, the device is full. If a cable or a plug isn’t working properly, the screen shows that too.
Capacity and charging
The 20,000 mAh capacity is pretty decent. It gives me almost 4 full charges of my iPhone 16. That covers one phone for several days, or two phones for a weekend.
The battery is 72 Wh, about twice the Kings 10,000 mAh power bank (37 Wh) in the photos.
There are two USB-A outputs and a USB-C port, so you can charge three devices at once. The USB-C port puts out up to 45 W, which is enough for fast charging a phone or a tablet, and the two USB-A ports cover older cables and smaller devices like head torches and camp lights.
The power bank comes with a USB-C to USB-C cable rated up to 60 W, and it works well. You recharge the power bank itself through the same USB-C port, or with a Lightning cable through the second input. That second input is handy if an iPhone cable is the one you already have plugged in.
The power bank takes up to 30 W in. With a USB-C charger of 30 W or more, expect about 3 to 4 hours for a full recharge from empty. A standard 10 to 18 W phone charger takes more like 6 to 8 hours, so it’s worth using a fast charger.
Torch
It has a little torch built in, between the USB ports. That’s quite handy, and many other power banks don’t have one.
It’s a small light, not a replacement for a head torch. But the power bank is usually within reach in the tent or the car at night, and then it’s enough to find a cable, a zip or your shoes without having to look for another light first.
Low Power Mode
A power bank normally switches itself off when the output drops too low, to save energy. That’s a problem with small devices that draw very little power.
This one has a Low Power Mode that keeps it running. It’s made for low-draw USB devices like smartwatch chargers, USB baby monitors and night lights. If you’ve ever plugged a watch or a small light into a power bank and found it switched off an hour later, this is the fix for that.
Size & Weight
It’s slightly on the heavier and larger side: 377 g on my scale, and 180 × 80 × 22 mm. That’s longer and wider than a phone and a lot thicker, so it’s something for the bag or the glovebox and not for a trouser pocket.
Next to the blue Kings 10,000 mAh power bank you can see the difference in size. The 10,000 is the easier one to carry around. The 20,000 has twice the capacity.
I also put it next to another 20,000 mAh power bank, the VRURC. The VRURC weighs significantly less at 255 g and is a bit more compact. So I wouldn’t say the Kings is great for ultralight hikers. For anyone with a vehicle, the weight doesn’t matter much.
Materials & Build Quality
The body is black plastic with a fine textured pattern on the back and a glossy panel over the screen on the front.
The material does scratch easily, though. Be careful where you put it down, especially around rocks like the ones where I took these photos. It’s worth keeping it away from keys and tools, and a small pouch is a good idea if it travels loose in a bag.
Kings 10,000mAh vs 20,000mAh
Kings sells this power bank in two sizes, and I have both. Here’s how they compare.
| Kings 10,000mAh | Kings 20,000mAh | |
|---|---|---|
| Capacity | 37 Wh | 72 Wh |
| Phone charges | About 2 | Almost 4 (iPhone 16) |
| Weight | 201 g | 377 g |
| Size | 135 × 67.5 × 15 mm | 180 × 80 × 22 mm |
| Outputs | 1 × USB-A, 1 × USB-C | 2 × USB-A, 1 × USB-C |
| Fastest output | 18 W | 45 W (USB-C) |
| Charge level | 4 LED lights | LCD screen with volts and amps |
| Torch | No | Yes |
| Low Power Mode | No | Yes |
| What I paid | About $30 | About $100 |
| Our score | 8.3 | 8.5 |
The 20,000 gives you twice the charges plus the screen, the torch and the Low Power Mode. The 10,000 is much simpler and smaller, and costs about a third. See the Kings 10,000mAh power bank review for more. For all the power banks we’ve tested side by side, see our best camping power banks guide.
Conclusion: Kings 20,000mAh Lithium Portable Power Bank
The Kings 20,000mAh power bank gives me almost 4 full charges of an iPhone 16, and the LCD screen with the battery status, volts and amps is really handy. The torch and the Low Power Mode are useful extras. It’s on the heavier and larger side, it scratches easily, and at about $100 it’s slightly expensive. If you travel with a vehicle, it’s a good power bank to have in the car.
A 20,000 mAh (72 Wh) power bank with a handy LCD screen, a built-in torch and almost 4 charges of an iPhone 16.
Heavier and larger than some, it scratches easily and it’s slightly expensive at about $100. It’s a good power bank for anyone travelling with a vehicle.
- Travellers
- Campers
- 4WD tourers
Yes, if you travel with a vehicle. About $100 is slightly expensive for 20,000 mAh, but the LCD screen with volts and amps, the torch and the Low Power Mode are extras many power banks don’t have. If weight matters, there are lighter 20,000 mAh power banks.
