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ZMI USB PD Backup Battery & Hub for MacBook Pro 2016 & Newer/MacBook Air 2018/Nintendo Switch/iPhone 12 Fast Charge External Battery Pack Portable Charger Powerbank for iPhone/iPad/Samsung

4.5 4.5 out of 5 stars 423 ratings

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Connector Type lightning, usb, USB Type C, Micro USB, USB Type A
Brand ZMI
Battery Capacity 20000 Milliamp Hours
Special Feature Fast,Portable Charger
Voltage 20 Volts, 5 Volts, 9 Volts, 12 Volts
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This Item
ZMI USB PD Backup Battery & Hub for MacBook Pro 2016 & Newer/MacBook Air 2018/Nintendo Switch/iPhone 12 Fast Charge External Battery Pack Portable Charger Powerbank for iPhone/iPad/Samsung
ZMI USB PD Backup Battery & Hub for MacBook Pro 2016 & Newer/MacBook Air 2018/Nintendo Switch/iPhone 12 Fast Charge External Battery Pack Portable Charger Powerbank for iPhone/iPad/Samsung
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Portable Laptop Power Bank, 98Wh/27000mAh Portable Charger with 100W AC Outlet, 65W PD USB C QC 3.0 Fasting Charging for MacBook Pro/Air, iPad, iPhone, Samsung, Dell XPS, HP, Nintendo Switch and More
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PriceCurrently unavailable.$33.98$99.99$79.99$59.99$79.99
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Customer Ratings
Battery life
4.4
4.3
3.7
For traveling
4.3
4.3
3.8
Sold By
ONLYNEW Direct
llano_PowerDirect
ElephantStory
PSOOO
EWEMOSI Direct
capacity
20000 milliamp hours
32000 milliamp hours
30000 milliamp hours
20000 milliamp hours
50000 milliamp hours
27000 milliamp hours
connector type
Micro USB, usb, USB Type C, USB Type A, lightning
USB Type C
USB Type C, USB Type A
USB Type C
USB Type C
USB Type C, Micro USB
number of ports
3
2
4
3
4
compatible devices
Tablet, Smartphone
Smartphone
Smartphone
Laptop
Smartphone
Laptop, Drone, Flashlight, iPhone
voltage
12.0 volts, 5.0 volts, 20.0 volts, 9.0 volts
5 volts
3.7 volts
3.7 volts
110 volts
weight
405 grams
0.54 kilograms
1.38 pounds

Product information

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ZMI

ZMI USB PD Backup Battery & Hub for MacBook Pro 2016 & Newer/MacBook Air 2018/Nintendo Switch/iPhone 12 Fast Charge External Battery Pack Portable Charger Powerbank for iPhone/iPad/Samsung


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Product Description

PowerPack 20K battery pack only ZMI PowerPack No. 20 QB826G Ultra Power Portable Laptop Power Bank ZMI PowerPack 20K Pro QB823 PowerPack 10K USB-C Fabric
[This Listing] PowerPack 20K Battery Pack Only without Power Adapter PowerPack #20 QB826G Ultra Power USB-C Laptop Portable Charger PowerPack 20K Pro Battery Pack PowerPack 10K USB-C
Customer Reviews
4.5 out of 5 stars
423
4.5 out of 5 stars
135
4.5 out of 5 stars
145
4.3 out of 5 stars
225
20-inch USB-C to USB-C Cable Included? Yes Yes Yes Yes
12-inch Micro-USB/USB-C to USB Combo Cable Included? Yes No No. Instead, includes 12" USB-A to USB-C cable. Yes
Travel Pouch Yes No Yes Yes
1.5-meter USB-C to USB-C Cable Included? No No. Instead, includes 1-meter proprietary USB-A to USB-C cable. No No
Cell Capacity 20,000mAh @ 3.6V, 72Wh 25,000mAh @ 3.63V, 90.75Wh 20,000mAh @ 3.6V, 72Wh 10,000mAh @ 38.5V, 38.5Wh
Size of Battery Pack 6.31×3.22×0.83 in 7.4×3.2×1.1 in 6.31×3.22×0.83 in 5.54×2.83×0.63 in
Weight of Battery Pack 14.29 oz 1.28 lbs 15.52 oz 7.41 oz
Primary Usage For compatible models of phones, tablets & USB-C laptops 2016 and newer MacBook Pro models and other newer laptops charged via USB-C ports For compatible models of phones, tablets & USB-C laptops For compatible models of phones & tablets
Max Wattage via USB-C 45W@15V, 40W@20V 100W+65W+45W 65W (requires E-mark cable) 18W
ZMI PowerPack 20K USB-C PD Backup Battery & Hub

Since 2014, Zimi Corporation has cumulatively sold over 110 million portable chargers/battery packs worldwide, including our PowerPack line of fast-charging battery packs. The PowerPack 20000 offers more power storage and faster charging speeds than any PowerPack ever. No matter where you go, the PowerPack 20000 will make sure your phone or laptop stays charged. With the PowerPack 20000, you no longer have to constantly search for an open power outlet. You no longer have to be stuck in an awkward position while trying to charge and use your phone at the same time. You can lie comfortably in bed and watch hours of movies on your laptop. Or you can explore the world and always have enough power to stay connected to your friends and family. Whether you are an avid gamer or a business person always on the go, the PowerPack 20000 will ensure you stay charged wherever you go, whenever.

NOTE: When traveling by plane, FAA regulations require you to store your portable charger in your carry-on luggage, NOT checked-in luggage.

Specifications

Model: QB820

Cell Type: Lithium-ion

Cell Capacity: 20,000mAh at 3.6V or 72Wh

Operating Temperature: 32° to 113° F (0° to 45° C)

Input: USB-C 5-20V MAX 45W

Output: The combined power output over three ports is 45W MAX.

  • USB-C: 5-20V MAX 45W (15V/3A) or 40W (20V/2A);
  • USB-A (×2): 5V/2.4A 9V/2A 12V/1.5A MAX 18W (two ports total).

Dimensions: 6.31 × 3.22 × 0.83 in (160.4 × 81.8 × 21 mm)

Weight: 14.29 oz (405 g)

Color: Blue-tinged black

ZMI PowerPack 20000

Hero

Compatible Devices

  • iPhone 12 · iPhone 12 Pro · iPhone 11 · X · XS · XS Max · XR | 8 · 8 Plus | 7 · 7 Plus | 6 · 6 Plus | 6S · 6S Plus | 5 · 5C · 5S | 4 · 4S | iPad 2 · 3 · 4 | Air · Air 2 · 2017 | Mini 2 · 3 · 4
  • 10.5" | 12.9" iPad Pro (~30W USB PD fast-charging)
  • MacBook Pro (2016 and later) | MacBook Air (2018 and later) | iPad Pro (2018 and later)
  • Pixelbook | Pixel 3 | Pixel 3 XL | Pixel 2 | Pixel 2 XL | Pixel | Pixel XL | Nexus 6p · 5x
  • Nintendo Switch, DJI Spark, Sony a7R III Mirrorless Camera
  • GoPro HERO5 | HERO6 | Fusion | HERO7
  • Samsung Chromebook Pro | Plus
  • Samsung S10 | S10 Plus | S10e | S9 | S9+ | S8 | S8+ | S7 | S7 edge | S6 | S6+ | S6 edge | S6 edge+
  • LG Tribute HD | Stylo 2 3 | K7 K8 | Rebel | X venture | Q8 | V30 | V20 | G6 | G5 | G4 | G3; LG Gram 13Z970 | 15Z960 | 15Z970
  • Sony Xperia XZ | XZ Premium | XZ1 | XZs | XA Ultra
  • HP Spectre x360 13
  • Lenovo Yoga 720 13" | 730 13" | 920 13" | C930; ThinkPad X1 Yoga (2nd Gen) 14"; Thinkpad 13 | Carbon x1 5/6th Gen
  • Dell XPS 13 9260/9360/9370 (may give underwattage warning on some laptops) | Dell Latitude 5480
  • Surface Book 2 15" | Surface Go
  • Acer Spin 7, Motorola, HTC branded Android smartphones and tablets. (NOTE: Does NOT work with ASUS ZenBook 3 Deluxe European Model: UX3490U. Does NOT work with Dell XPS 15 9550, Lenovo Yoga 720 12", or Surface Laptop 2)

Spend Less Time Charging Your Device

Ports labeling

  • 2 USB-A output ports (left and right in image) that are capable of Quick Charge 3.0. It can charge an iPhone 8 20% in around 21 minutes and 0 to 15% in 12 minutes or less.
  • 1 USB-C input/output port (center in image) that supports Power Delivery 2.0. This means really fast charging that will charge an iPhone 8 20% in around 12 minutes and 0 to 100% in 1 hour and 40 minutes. Provides lightning fast USB PD for Nintendo Switch and GoPro Hero 5/6/Fusion as well.
  • Fast Recharging: USB-C port also functions as an input, so you can recharge the PowerPack 20000 at the fastest speeds possible. Recharge from 0% to full capacity in 3.8 hrs via 45W USB PD power adapter, 5.5 hrs via 18W QC enabled plug, or 8.7 hrs via 10/12W iPad plug.
  • With every purchase, you get a high-quality ZMI USB-C to USB-C cable. This will ensure that nothing stands in your way from accessing the fastest charging speeds on the market.

Create A Portable Office

So there's this growing trend in laptops that only offer one port...we can solve that problem. With the PowerPack 20000, you get 2 devices in 1. Not only a portable charger, the PowerPack 20000 also has a USB Hub mode (USB 2.0 compliant) that delivers data transfer over its USB ports. Need to connect a mouse to your laptop? Plug it into the PowerPack 20000. Need to access an external flash drive? Plug it in. Need to connect a gaming controller? Plug it in.

In addition, the USB Hub mode is perfect for powering your smaller devices that will require a smaller charging current. These may include smart watches, Bluetooth headphones, fitness trackers, and other wearables.

With these features, you can create a portable office (or gaming center), so you can get some serious work done wherever you go.

Safety, Compatibility, Convenience

Safeguards against

  • Overheating
  • Short-circuiting
  • Input overvoltage/reverse-voltage
  • Output overvoltage/overcurrent
  • Battery overcharge/overdischarge

Certifications

FCC, CE, SGS NA Listed, BC, RoHS

Just Plug In And Get Power. We know you hate wondering if a charger will work with your device, so we've built the PowerPack 20000 to be compatible with as many devices and protocols possible.

What You Get:

  • 1× PowerPack 20000
  • 1× 20" USB-C to USB-C cable
  • 1× 12" 2-in-1 Micro-USB/USB-C to USB-A combo cable
  • Travel pouch
  • User guide

(Not Included: iPhone Lightning cable, power adapter)

Customer reviews

4.5 out of 5 stars
4.5 out of 5
423 global ratings

Customers say

Customers like the quality, performance, and build quality of the power bank. For example, they mention it's an excellent product, works great, and is reliable. Some are happy with the size and the USB hub. That said, opinions are mixed on charging and portability.

AI-generated from the text of customer reviews

63 customers mention51 positive12 negative

Customers like the quality of the power bank. They say it's the best battery for the price, an excellent power bank, and convenient. Some mention that it draws a fair amount of power, holds a lot of charge, and provides the expected performance.

"...Overall, initially, I am please and if you are looking for good power in a clean design, this is an awesome choice." Read more

"...This is a BEAST of a battery backup, with included Power Delivery...." Read more

"...And it still charges. It is very nice. A bit expensive. But it comes with a USB-C cable, a hub, a battery, and a micro-usb cable...." Read more

"...At the moment, this appears to be the most sophisticated, best built, largest capacity high wattage Type-C charger that has a native type C port..." Read more

54 customers mention40 positive14 negative

Customers like the performance of the power bank. For example, they say it works great, perfectly works for their laptop and mobile phone, and the phone charge worked great on their trip. That said, some complain that it doesn't work well with their computer.

"...I also use this for my Macbook and it works great...." Read more

"...n't as clear as some may like, but it is plug and play and works how you think it should without needing to read them...." Read more

"...with my Nintendo Switch away from an electrical outlet, and it does the job just fine." Read more

"...This causes me to wake up with devices not fully charged since it won’t turn back on as the devices loses charge overnight after reaching 100%...." Read more

18 customers mention18 positive0 negative

Customers are satisfied with the build quality of the power bank. They mention that it is a solid product, reliable, and long-lasting. The cables are also of good quality. The company is reputable and provides 18 months warranty and phone support. Overall, customers are happy with their purchase and recommend it to others.

"...The packaging was done very well, quality was almost Apple-esque if you will. They took time to really think about the box and internal of the box...." Read more

"...Great build quality, and comes in premium packaging. Also includes 2 short USB cables in the box...." Read more

"...Build quality seems solid. Good value for money.The Not-So-Good...gets hot as heck when charging. Is a bit heavy...." Read more

"...The fit and finish is also very nice, it feels like a premium item built to last. No problems with airport security...." Read more

18 customers mention15 positive3 negative

Customers like the size of the power bank. For example, they say it has good dimensions for its capacity, has a decent build quality, and is about the size a large smart phone. Customers are also impresseded with the fit and finish, saying it feels like a premium item built to last. They say it provides more than enough power supply for two phones and two pads, and delivers the expected amount of recharge capacity.

"...The fit and finish of the product is outstanding and has an aluminum shell...I missed that in the description and thought it was plastic...." Read more

"...This power bank is small, about the size of a large smart phone. It's a bit on the heavy side, but that's what you get with 20 Ah...." Read more

"...The fit and finish is also very nice, it feels like a premium item built to last. No problems with airport security...." Read more

"...- Included USB C-to-C cable that seems good quality and is a great size - 20in, not too small or larger for connecting a device to the battery..." Read more

18 customers mention18 positive0 negative

Customers appreciate the added USB hub. They say it's a great addition to your USB-C life, and it charges pretty much everything with a USB port. Customers also mention that the power bank comes with s few USB-A cables and a felt drawstring bag.

"...It does have a hub function to it as well but I am not sure I will use that feature very often but nice to have just in case...." Read more

"...Great build quality, and comes in premium packaging. Also includes 2 short USB cables in the box...." Read more

"...USB hub mode is nice to have. I don't really look for that from a battery, but it doesn't hurt to have it in a pinch!-..." Read more

"...The dimensions and product materials seem great and the added USB hub is something I’ve always wanted...." Read more

71 customers mention48 positive23 negative

Customers are mixed about the charging of the power bank. Some mention that it charges itself very quickly on USB-PD, while others say that it takes a long time to fully charge.

"...It charges pretty fast using the USB-C as well. I have only charged two devices so far just on what was left from the factory charge...." Read more

"...It fast charges everything I hook up to it. I can charge the Pixelbook about 1.5 times with this battery...." Read more

"...Is a bit heavy. Can only charge my 15" MacBook Pro to 57% from dead zero...." Read more

"So far I have been very happy with this battery backup. It can be charged quickly via its usb-c port and it also delivers PD rapid charging for my..." Read more

30 customers mention15 positive15 negative

Customers are mixed about the portability of the power bank. Some mention that it is heavy but compact, and stores easily in backpack pockets. However, others say that it's a little heavy and bulky.

"...Small things but also like that they have a little travel bag with the device. Most cases add more bulk to an item that already has some bulk to it...." Read more

"...The Not-So-Good...gets hot as heck when charging. Is a bit heavy. Can only charge my 15" MacBook Pro to 57% from dead zero...." Read more

"...It's still small enough to take on an airplane though, at 72Wh (below the US limit of 100 Wh).- Good dimensions for its capacity...." Read more

"...It's a bit on the heavy side, but that's what you get with 20 Ah. It also has status lights and three ports (two type As and one Type C)...." Read more

12 customers mention0 positive12 negative

Customers are dissatisfied with the heat produced by the power bank. They mention that it gets warm when doing 45W input or output, and that precious battery energy is being wasted as heat.

"...It does get rather warm while in use, but that was to be expected. All of the ports (1 USB-C and 2 USB-A) quick charge my QC 3.0 phones...." Read more

"...Good value for money.The Not-So-Good...gets hot as heck when charging. Is a bit heavy...." Read more

"...Pro and it worked fine taking the charge from 5-65% but the battery backup got very warm...." Read more

"...Some minor downsides:- It gets warm when doing 45W input or output.-..." Read more

My new go-to backup battery. Does it all and works so well! The hub is just an added bonus!
5 Stars
My new go-to backup battery. Does it all and works so well! The hub is just an added bonus!
Pictured with the ZMI on the left, and a RavPower 20100 on the right, for size comparison.This is a BEAST of a battery backup, with included Power Delivery. The Power Delivery USB-C port charges my Pixelbook quickly and reliably (40W), similar charge rate as using the included charger that came with my Pixelbook. It does get rather warm while in use, but that was to be expected. All of the ports (1 USB-C and 2 USB-A) quick charge my QC 3.0 phones. It fast charges everything I hook up to it. I can charge the Pixelbook about 1.5 times with this battery. This battery charges pretty quickly when connected to my 45W Pixelbook charger. If I'm only charging my phone with this, I can recharge my phone 3 or 4 times from a single charge. Add to that the dual use of this battery backup as a USB hub, and it's an all-in-one solution for any Pixelbook owner. Switch it to hub mode, and connect 2 USB-A devices to your Pixelbook.Great build quality, and comes in premium packaging. Also includes 2 short USB cables in the box. 1 USB-C to USB-C, and 1 USB-A to Micro USB (with a Micro to USB-C adapter). Comparatively, this is an expensive battery backup, especially considering the size 20,000 mAh, but the cost is outweighed by the awesome capabilities that this battery backup delivers.Prior to this battery backup, my main backup was a RavPower Turbo+ Series 20100 with USB-C and QC 3.0 (pictured). As you can see this ZMI is shorter and thinner than the RavPower. This ZMI does everything the RavPower can do, and more (hub mode)! Best battery backup for the Pixelbook, by far! I've been able to replace 2 devices: the larger RavPower battery and a USB hub with this ZMI battery/hub, which really helps while travelling.Note: I do not have a MacBook or MacBook Pro, so YMMV
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Top reviews from the United States

Reviewed in the United States on January 23, 2019
One person found this helpful
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Reviewed in the United States on January 15, 2018
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5.0 out of 5 stars My new go-to backup battery. Does it all and works so well! The hub is just an added bonus!
Reviewed in the United States on January 15, 2018
Pictured with the ZMI on the left, and a RavPower 20100 on the right, for size comparison.

This is a BEAST of a battery backup, with included Power Delivery. The Power Delivery USB-C port charges my Pixelbook quickly and reliably (40W), similar charge rate as using the included charger that came with my Pixelbook. It does get rather warm while in use, but that was to be expected. All of the ports (1 USB-C and 2 USB-A) quick charge my QC 3.0 phones. It fast charges everything I hook up to it. I can charge the Pixelbook about 1.5 times with this battery. This battery charges pretty quickly when connected to my 45W Pixelbook charger. If I'm only charging my phone with this, I can recharge my phone 3 or 4 times from a single charge. Add to that the dual use of this battery backup as a USB hub, and it's an all-in-one solution for any Pixelbook owner. Switch it to hub mode, and connect 2 USB-A devices to your Pixelbook.
Great build quality, and comes in premium packaging. Also includes 2 short USB cables in the box. 1 USB-C to USB-C, and 1 USB-A to Micro USB (with a Micro to USB-C adapter). Comparatively, this is an expensive battery backup, especially considering the size 20,000 mAh, but the cost is outweighed by the awesome capabilities that this battery backup delivers.

Prior to this battery backup, my main backup was a RavPower Turbo+ Series 20100 with USB-C and QC 3.0 (pictured). As you can see this ZMI is shorter and thinner than the RavPower. This ZMI does everything the RavPower can do, and more (hub mode)! Best battery backup for the Pixelbook, by far! I've been able to replace 2 devices: the larger RavPower battery and a USB hub with this ZMI battery/hub, which really helps while travelling.

Note: I do not have a MacBook or MacBook Pro, so YMMV
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31 people found this helpful
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Reviewed in the United States on July 4, 2019
Reviewed in the United States on December 22, 2019

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Deathnovan
4.0 out of 5 stars Muy buena batería compatible con Nintendo Switch
Reviewed in Mexico on August 11, 2019
Martin Endemann
5.0 out of 5 stars Extra energy and interfaces for Surface Go
Reviewed in Germany on September 25, 2019
The Review Programme
5.0 out of 5 stars Flexible with just one niggle
Reviewed in the United Kingdom on September 2, 2018
4 people found this helpful
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Amazon Customer
5.0 out of 5 stars Suitable for Surface Pro 7 with usb C to usb C
Reviewed in the United Kingdom on March 5, 2020
One person found this helpful
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Mw
5.0 out of 5 stars Great for charging Surface pro 7 ( using USB c to USB c)
Reviewed in Germany on February 22, 2020