Best portable power banks of 2021: Zendure, Anker and more
Sometimes there isn’t a power outlet handy to charge our devices, and that’s when a power bank comes in handy.
Whether you’re hiking in nature or strolling between cafes, a power bank can be the difference between staying connected or staying quiet.
Here’s a selection of great power banks to keep your devices charged when you’re away from a power outlet.
The ultimate power bank
Everything about the Omni Ultimate is built around power and ruggedness. The ABS / rubber outer shell is capable of withstanding, the ports are well designed, and the screen offers everything from information at a glance to a deep dive into what’s going on.
AC / HVDC outlet
- Output: 120 W (US model 120 V / 60 Hz, EU model 230 V / 50 Hz)
- Input: USB-PD, 5V ~ 20V, up to 3A, 60W max
- Output: USB-PD, 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3A, up to 3A, 60W max.
- Port 1 and Port 2: QC 3.0,5V / 3A, 9V / 2A, 12V / 1.5A
5.5 x 2.5mm barrel port
- Input: 5 ~ 25V, up to 4.5A, 90W max.
- Output: adjustable 5 V – 60 V with an accuracy of 0.1, up to 8 A (150 W max)
- Cell type: 18650 Li-ion battery
- Capacity: 38,400 mAh, 142 Wh ± 5%
- Weight: 3.08 lbs (1.4 kg)
- Dimensions: 6.6 “x 5.7” x 2.1 “(167.5 x 145 x 54 mm)
- Warranty: limited to one year
- Operating temperature: Temperature 0 ° C-40 ° C, Humidity 30-70%, Altitude ≤2000m
Safe flight: Airline authorization required
- Lots of power
- Lots of outings
- Information-rich OLED display
Perfect for multiple devices
If you want a large power bank with lots of power and the ability to charge four devices simultaneously, the Zendure SuperTank Pro is the power bank for you.
Dimensions: 4.9 x 2.9 x 1.8 inches (124mm x 74.5mm x 45.5mm) | Weight: 20.5oz / 580g | Capacity: 26,800 mAh | Cells: 8 high-density battery cells for Samsung electric vehicles | Safe flight: Yes (rated at 96.48 watt hours) | Total DC output: 138W | Firmware update: Yes, requires a PC | Display: OLED screen | Equipment: Aluminum shell with intermediate frame in ABS and polycarbonate
- USB-C1 / C2: 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3A, 20V / 5A, 100W max.
- USB-C1: 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3A, 20V / 5A, 100W max.
- USB-C2: 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3A, 20V / 5A, 100W max.
- PPS: 5-11 V, 5 A
- USB-C3 / C4: 5 V / 3 A, 9 V / 2 A, 12 V / 1.5 A, 18 W maximum
- Lots of power
- Safe flight
- Four USB-C ports
- Enough power to charge a MacBook Pro
- OLED display
A portable, everyday power bank, more than enough to keep your smartphone and tablet running for about a day longer.
Dimensions: 4.5 x 2.8 x 1 inch (114mm x 71.1mm x 25.4mm) | Weight: 10.8oz / 306g | Capacity: 15,000 mAh | Safe flight: Yes (rated at 54 watt hours) | Total DC output: 48W | Equipment: ABS & polycarbonate
- USB-C (PD): 5 V / 3 A, 9 V / 3 A, 12 V / 3 A, 15 V / 3 A, 20 V / 2.25 A, 45 W max.
- USB-C: 5 V / 3 A, 9 V / 3 A, 12 V / 3 A, 15 V / 3 A, 20 V / 2.25 A, 45 W maximum
- USB-A: 5 V / 3 A, 9 V / 2 A, 12 V / 1.5 A 18 W maximum
- Reasonable price
- Not enough power to charge a laptop
Best combined device
Is it a power bank or a wall charger? It’s both!
Dimensions: 3.2 x 2.8 x 1.2 inches (80mm x 71mm x 30mm) | Weight: 8.6oz / 243g | Capacity: 4 850 mAh | Safe flight: Yes | Total DC output: 5V / 3A | Equipment: Polycarbonate
- Mains load (100-240V, 50-60Hz, 0.6A)
- USB-C: 5 V / 3 A, 9 V / 2 A, 18 W maximum
- USB-A: 5 V / 2.4 A, 12 W maximum
- Always charged if you keep it plugged in
- Recharges quickly
- USB-A and USB-C outputs
- Space saving while traveling (replaced with a separate charger and power bank)
Ideal for large spaces
I have a lot of power banks, but it’s rare to come across a power bank that claims to be water resistant. It is even rarer to come across a truly water resistant power bank.
Dimensions: 4.1 x 2.0 x 1.2 inches (104mm x 50mm x 30mm) | Weight: 6.6oz / 187g | Capacity: 6,700 mAh | Safe flight: Yes (rated at 24.8Wh) | Total DC output: 5V / 3A | Equipment: Rubberized coating
- USB-C: 5 V / 3 A
- USB-A: 5 V / 2.4 A
- IP67 rated
- 150 lumens flashlight with SOS
How were these products chosen?
These are all products that I have tested and have been using for several months. I always have a power bank or two with me when I travel which means they go through an extended test.
Here are some of the criteria I’m looking for:
- That the capacity is as shown
- That the power bank delivers the power indicated in the data sheet
- That the product is durable and withstands prolonged use
What size external battery do I need?
Difficult question. If you want an emergency power bank to serve as a backup, a small 5000mAh power bank will do. If you want a lot of power, and maybe the ability to charge a laptop, then the bigger the better (well, as big as you want!).
What is the largest external battery I can take on an airplane?
Power banks up to 100 Wh (100,000 mAh) can be carried without approval, and for power banks between 100 Wh and 160 Wh, you will need airline clearance.
Why would you need a waterproof power bank?
Not everyone uses their external battery at home or in a cafe. The power bank ban is ideal for keeping camera gear and other gear like smartphones and GPS receivers charged when they are off the grid.
What do you think of power banks that have a built-in solar panel?
I haven’t met a good one yet. I’m also not comfortable cooking rechargeable batteries in the sun for long periods of time.