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Cygnett Boost 20000mAh Powerbank - Black
CY4751PBCHE
$79
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Product Overview
Key Features
- Powerbank for charging phones and tablets
- 20000mAh capacity with 15 Watt total power
- 1 USB-C and 2 USB-A connection ports
- Includes 15cm USB-A to USB-C cable
Key Specifications
- Brand:
- Cygnett
- Model Number:
- CY4751PBCHE
- Compatible Phones:
- iPhone, Android, Tablet
- Wired Connections:
- 1x USB-C, 2x USB-A
- Battery:
- 15W
- Type:
- Powerbank
General Information
- What's In The Box:
- 15cm USB-A to USB-C Cable
Warranty
- Manufacturer's Warranty:
- 2 Year
General Information
- What's In The Box:
- 15cm USB-A to USB-C Cable
Product Dimensions
- Product Height (mm):
- 145
- Product Width (mm):
- 71
- Product Depth (mm):
- 29
- Product Weight (g):
- 490
Box Dimensions
- Box Height (mm):
- 160
- Box Width (mm):
- 32
- Box Depth (mm):
- 120
- Box Weight (kg):
- 0
Product Reviews of Cygnett Boost 20000mAh Powerbank - Black
Overall Rating Snapshot
4.8 out of 5 stars from 89 reviews
97% of users recommend this product
What customers say, summarised by AI
- High capacity offers 4–6 full charges for most smartphones and tablets.
- Can charge multiple devices at once; supports up to three at a time.
- Digital display clearly shows remaining battery percentage.
- Slightly large and heavier compared to smaller power banks.
- Durable design, sturdy metal casing, and reliable long-term performance.
- Recharges devices quickly, though power bank itself may recharge slowly.
Pros
Easy (4)
Value (3)
Reliable (3)
Portable (1)
Cons
Speed (4)
Good buy
I like this power bank little heavy but it is a powerful power bank I carry it in my handbag and know I will always be able to charge my phone if I am out a lot of the day
Anastasia
Confirmed purchase 21 August 2026
Published on 15 September 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Budget friendly reliability
The Cygnett ChargeUp Boost 20,000mAh Power Bank (commonly referred to as the Cygnett Boost 20K) is a solid, entry-level workhorse designed for multi-day device top-ups. It trades raw charging speed for high capacity and budget-friendly reliability. Holds roughly 4-5 full smartphone charges digital numeric screen shows you remaining battery percentage
Rk
Confirmed purchase 24 August 2026
Published on 15 September 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Cygnett Boost powerbank
Great u it, I actually went to purchase another product, so glad I didn’t. When not at home, this is essential as my phone battery dies quite quickly when roaming for networks. Especially great when going into the country. Couldn’t be without it.
Lorraine Johnstone
Confirmed purchase 12 August 2026
Published on 9 September 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Cygnett Boost Powerbank
Great unit, I actually went to purhase something else, so glad I didn't. When not at my home, this is essential as my phone battery dies quite quickly when roaming for network. Especially great when going into the country! Couldn't be without it now.
Lorraine Johnstone
Confirmed purchase 12 August 2026
Published on 9 September 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Charges phone multiple times over
Works well, holds charge and can charge mobile 3-4 times no problem.
Anonymous
Confirmed purchase 22 July 2026
Published on 25 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Awesome power bank that has saved the day more than once 😊
This powerbank is fantastic whether at home or while out and a about. Yes it is slightly bulkier than some other powerbanks though you can charge your device multiple times before needing to recharge your powerbank. You are also able to charge multiple devices at the same time. I was so happy with this that I went back and purchased a second one for a friend so they could have their own and stop pinching mine 😊
GIGI77
Confirmed purchase 25 July 2026
Published on 21 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Great powerbank!
It is a very solid brick. But it does the job, charging quickly. The digital screen is also super helpful. I would recommend.
Happy Shopper!
Confirmed purchase 22 July 2026
Published on 19 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Works as expected
Happy with this product .. works well
Kylie Ward
Confirmed purchase 17 July 2026
Published on 14 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Great. Backup system for traveling
This is a perfect way to ensure that we have a backup system for our phones whilst traveling off grid in our caravan. Small, compact, portable and powerful
Karen T
Confirmed purchase 11 July 2026
Published on 13 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Sufficient to charge 3 devices
It is handy and comes with string in the box. Charge more then 3 devices with full 🔋. Digital display to show how much power is left
Jignesh Patel
Confirmed purchase 21 July 2026
Published on 12 August 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
You've viewed 10 of 89 reviews
ABOUT THE GOOD GUYS REVIEWSThe Good Guys product reviews are collected from verified purchasers who may have received an incentive in return for providing an authentic review.
The below information is AI generated based on Australian websites information around this item. We have done our best to ensure its accuracy but suggest verifying any information within this tab before purchasing.
At a glance
The Cygnett Boost 20000mAh Powerbank is a versatile, high-capacity portable charger ideal for users who need reliable power on the move. With three USB ports (1x USB-C, 2x USB-A), it can charge up to three devices at once and is suitable for phones and earbuds. Its compact size and included lanyard make it easy to carry. While it offers up to 15W charging, it lacks ultra-fast charging speeds found in some premium models.
What it’s great for
- Everyday Charging
- Travel
- Multi-Device Charging
- Emergency Backup
Where it works best
- Commuting
- Travel
- Office
- Home
- Outdoor Activities
Who it’s for
- Frequent Travellers
- Students
- Busy Professionals
- Tech Enthusiasts
Things to consider
Does not support ultra-fast charging above 15W, so may not be ideal for users needing rapid top-ups for high-end devices.
Fast charging suitability
6/10 - Supports up to 15W charging, suitable for standard fast charging but not high-speed protocols.
Multi-device compatibility
Wide compatibility with phones, earbuds, and other USB-powered devices.
Travel suitability
8/10 - Compact size, lanyard, and high capacity make it excellent for travel.
Durability vs category average
7/10 - Solid build quality, but not ruggedised for extreme conditions.
Ease of use score
9/10 - Simple operation, clear battery indicator, and ready-to-use out of the box.
Key benefits
- High Capacity: 20,000mAh battery provides up to 5.2 full phone charges, reducing the need for frequent recharging.
- Triple Device Charging: Simultaneously charge up to three devices with 1 USB-C and 2 USB-A ports.
- Universal Compatibility: Suitable for any phone and most earbuds, ensuring broad device support.
- Compact Design: Measures just 14.5 x 7.1 x 2.9 cm, making it easy to carry in bags or pockets.
- Pre-Charged Out of the Box: Ready to use immediately, saving time for users.
- Battery Indicator: Built-in battery percentage display helps monitor remaining power at a glance.
- Lanyard Included: Added portability for travel and daily use.
Q: Can the Cygnett Boost 20000mAh power bank charge a laptop or tablet?
A: No. This model has a maximum output of 15W, which suits phones, earbuds and some smaller USB-powered devices, but it is generally below the 45W or higher that most USB-C laptops need. Tablets may charge, but not at laptop-class speeds.
Q: How many phone charges can this 20000mAh Cygnett power bank deliver in real use?
A: It can deliver up to 5.2 full phone charges when used with a typical smartphone battery, as stated by Cygnett. In real use, the result varies with your phone size, cable quality and charging losses, so larger phones will usually get fewer full recharges.
Q: Can all three ports on this Cygnett Boost power bank be used at the same time?
A: Yes. It has three output ports, 1 x USB-C and 2 x USB-A, so it can charge up to three devices at once. Keep in mind the maximum output is 15W, so charging may be slower when several devices are connected together.
Q: Is a 20000mAh power bank too large for everyday carry?
A: It depends on how much backup power is needed. At 145mm x 71mm x 29mm, this is more of a bag or commute power bank than a slim pocket model, but the larger capacity suits travel, long workdays and charging more than one device.
Q: Is this Cygnett Boost 20K better for travel than a smaller power bank?
A: It is better for longer days away from a charger because the 20000mAh capacity gives more total backup power than compact 5000mAh or 10000mAh models. The trade-off is extra size and weight, so it suits bags and travel more than light pocket carry.