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Monster Powerbank 20K 30W BK
MT20PRO-BK
$99
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Product Overview
Key Features
- 2 x USBC outputs of which 1 is input
- Fast Charge 30w Output
Key Specifications
- Brand:
- Monster
- Model Number:
- MT20PRO-BK
- Compatible Phones:
- Various
- Wired Connections:
- 2 x USBC outputs of which 1 is input
- Battery:
- 20000mAh / 77Wh
- Type:
- Powerbank
General Information
- Colour:
- Black
- Additional Features:
- Li-ion 3.85V 10000mAh 2pcs
Warranty
- Manufacturer's Warranty:
- 2 Year
General Information
- Colour:
- Black
- Additional Features:
- Li-ion 3.85V 10000mAh 2pcs
Product Dimensions
- Product Height (mm):
- 111
- Product Width (mm):
- 71.2
- Product Depth (mm):
- 29.5
- Product Weight (g):
- 323
Box Dimensions
- Box Height (mm):
- 100
- Box Width (mm):
- 30
- Box Depth (mm):
- 90
- Box Weight (kg):
- 0
Product Reviews of Monster Powerbank 20K 30W BK
Overall Rating Snapshot
4.8 out of 5 stars from 4 reviews
100% of users recommend this product
Charges fast
I’m very happy with this product, it charges fast and is not too bulky like some other powerbanks. I would recommend this product.
Fatima
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 Product
Small enough to be carry around with a large capacity. Very convenient.
Tai
Confirmed purchase 2 July 2026
Published on 29 July 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.
Best charger around
We used this charger on our recent international family holiday & it charged all 4 family members phones (2 at a time) within 3 hours. We did this most days and it never failed us. It is compact and charges fast and can easily be stored in a handbag, backpack or carry on luggage.
Natalie
Confirmed purchase 1 July 2026
Published on 29 July 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.
Powerbank
Small and compact. Good for a day out.
Thiam
Confirmed purchase 20 June 2026
Published on 14 July 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 4 of 4 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 Monster Powerbank 20K 30W BK is a portable charger designed for people who want dependable backup power for phones, tablets and other USB devices. Its strengths are strong 20,000mAh capacity, 30W fast charging and dual USB-C ports in a compact body. It is a good everyday and travel option, though it lacks extra port variety for users with older USB-A cables.
What it’s great for
- Daily commuting
- Travel backup power
- Charging phones and tablets
- Shared charging between two devices
- Emergency top-ups
Where it works best
- On the go
- Airport travel
- University campus
- Office
- Home
- In a bag or backpack
Who it’s for
- Everyday phone user
- Traveller
- Student
- Commuter
- Tablet user
- Anyone needing backup power
Things to consider
It offers strong USB-C charging and capacity, but users who need built-in cables, wireless charging or a wider mix of ports may prefer a more premium or specialist powerbank.
Fast charging suitability
Strong for compatible phones and tablets with up to 30W output
Multi-device compatibility
8/10 - works well with a wide range of modern USB-C devices, though port variety is limited
Travel suitability
9/10 - compact, lightweight design and high capacity make it well suited to commuting and travel
Durability vs category average
7/10 - solid everyday portable design, though no rugged or reinforced build features are specified
Ease of use score
9/10 - simple USB-C setup and portable size make it easy to carry and charge with
Key benefits
- 20,000mAh Capacity: Delivers about three to four full phone charges depending on your device, making it useful for long days out or short trips.
- 30W Fast Charging: Supports quicker charging for compatible phones and tablets than standard low-output powerbanks.
- Dual USB-C Ports: Lets you charge multiple compatible devices or recharge the powerbank while keeping your setup simple.
- USB-C Input on One Port: Makes recharging the powerbank straightforward with the same cable type many modern devices already use.
- 77Wh Battery Size: Provides substantial backup power while still being suitable for portable everyday use.
- Compact Form Factor: The small body is easy to slip into a bag or larger pocket for commuting or travel.
- Li-ion Battery Design: Offers reliable portable power for routine charging of phones, tablets and other USB devices.
- 2 Year Manufacturer's Warranty: Adds longer-term confidence for everyday use and travel carry.
Q: Is the Monster Powerbank 20K 30W BK suitable for charging a laptop?
A: No, 30W is mainly suited to phones, tablets, earbuds and similar USB devices. It may only maintain charge or charge very slowly on some USB-C laptops, because many laptops expect 45W to 100W or more for normal charging.
Q: How many phone charges can a 20,000mAh power bank typically provide?
A: A 20,000mAh power bank typically gives about 3 to 4 full charges for many modern smartphones. The exact result depends on the phone battery size, charging losses and whether the phone is being used while it is plugged in.
Q: Does the 30W rating mean this power bank can fast charge a phone?
A: Yes, 30W is enough for fast charging on many compatible phones and some tablets. Fast charging still depends on the device and cable supporting the same USB-C charging standard, so actual speed can be lower than the power bank's maximum output.
Q: How long does a 20,000mAh 30W power bank usually take to recharge?
A: A 20,000mAh power bank usually takes around 4 to 6 hours to recharge with a suitably powerful USB-C charger. If you use a lower wattage charger, a standard USB port or an older cable, it can take noticeably longer.
Q: Can the Monster Powerbank 20K 30W BK be taken on a flight?
A: Yes, a 20,000mAh power bank is typically about 74Wh, which is under the common 100Wh airline carry-on limit. It should usually travel in carry-on luggage rather than checked baggage, but airline rules can still vary by carrier.