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18W Power Bank, ROMOSS 20000mAh Portable Charger, with 3-Port Charge and Recharge, External Battery Pack Fast Charge compatible with Nintendo Switch iPhone iPad Samsung Galaxy Google Pixel and More, White

4.2 out of 5 stars 380 ratings

RRP: $40.99 Details

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Price: $34.99
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Enhance your purchase

Colour 20000mAh power bank SW20+
Brand ROMOSS
Connector type Lightning, Micro USB
Battery capacity 20000 Milliamp Hours
Battery cell composition Lithium Polymer

About this item

  • [Comprehensive Power Display]: Battery percentage + Charging voltage + Charging current; with just a power button pressed alternatively during use, your upgraded LED digital indicator will show them precisely. Fast Charge+ mode is indicated with blue sign when a Quick Charge-enabled device is connected.
  • [Fit Charge⊕ 3-Output]: Charges QC-support devices up to 80% in just 35 minutes, 4 times faster than conventional chargers. 3 USB outputs enable to charge a mobile phone, a tablet or with Nintendo Switch simultaneously at maximum speed up to 3 amps. CHARGING CABLE NOT INCLUEDED.(Note:not support S9, S10 fast charge)
  • [18W Rapid Recharge 3-Input]: It only takes 7 hours to fully recharge the 20,000mAh power bank with a 18W wall charger. Featuring 3-input: Micro-USB, lightning and Type-C provides high convenience of recharging this power bank with any of these 3 widely used cables. (Note: 18-watt wall charger is NOT included.)
  • [Tremendous Capacity]: The 20,000mAh capacity gives 2 full charges with Nintendo Switch, 8.4 to iPhone 8,or 1.8 charges to iPad Pro.
  • [What You Get]: A ROMOSS SW20 Pro 20,000mAh power bank, a user manual, 12-month warranty and friendly customer service. (Note: Charging Cable is NOT included.)

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Product Information

Technical Details

Additional Information

Frequently bought together

  • 18W Power Bank, ROMOSS 20000mAh Portable Charger, with 3-Port Charge and Recharge, External Battery Pack Fast Charge compatib
  • +
  • ROMOSS 2 in 1 Multi Charger Cable, [1.5m / 4.9ft Nylon Braided], USB Charging Cable Compatible for iPhone, iPad, Airpods Earp
  • +
  • ROMOSS 18W 30000mAh Power Bank, with 3 Input Ports , 3 Output Ports (Type C 3A+Micro USB 2.4A+Micro USB 2.1A), Big Capacity P
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Product Description

5 6 7 portable battery pack iphone usb battery
ROMOSS 20000mAh Portable Phone Charger ROMOSS 10000mAh Mini Portable Charger ROMOSS 30000mAh Type-C PD Portable Charger Sense 8+ 20000mAh 3 inputs & 3 outputs Fast Charge 20000mAh 3 inputs & 3 outputs Fast Charge
Capacity 20000mAh 10000mAh 30000mAh 20000mAh 20000mAh
Charging Technology fit+ charge fit+ charge fit+ charge 18W dual input/output fit+ charge 18W dual input/output fit+ charge 18W dual input/output
Output 5V/2.1A, 5V/1A 5V/2.1A, 5V/1A 5V/3A, or 9V/2A / 12V/1.5A, or 9V/2A/ 5V/2.1A 5V/3A, or 9V/2A / 12V/1.5A, or 9V/2A/ 5V/2.1A 5V/3A, or 9V/2A / 12V/1.5A, or 9V/2A/ 5V/2.1A
Input 5V/2.1A 5V/2.1A 5V/2.1A,or 5V/2A, 9V/2A 5V/2.1A ( L i g h t n i n g ),or 5V/2A, 9V/2A 5V/2.1A ( L i g h t n i n g ),or 5V/2A, 9V/2A
Size 5.73x2.74x1.16inch 3.7 x 2.5 x 1 inch 6.57x3.15x1.26inch 6.6x3.2x0.9inch 5.7 x 2.7 x 1.1 inches
Weight 430g 195g 671g 463g 428g

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4.2 out of 5 stars
4.2 out of 5
380 global ratings
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Top reviews from Australia

Reviewed in Australia on 28 May 2019
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18 people found this helpful
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Reviewed in Australia on 25 March 2019
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21 people found this helpful
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Reviewed in Australia on 23 January 2019
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10 people found this helpful
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Reviewed in Australia on 9 September 2020
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5.0 out of 5 stars Excellent powerbank at a low price
By James T. on 9 September 2020
This powerbank is very similar to the Sense6PS+, with a few value changes: different size, requires higher current to stay on, but can charge itself with pass-through at a higher current. I've copied my review for the Sense6PS+ and changed some values as appropriate. I do prefer the Sense6PS+ solely because I prefer its size.

It's about the size of a large phone, but about twice as thick (the Sense6PS is smaller, but thicker). I can fit it and my phone in my jean pocket, but it's very noticeable. Its made of plastic and feels sturdy, but I do have my doubts whether it will remain intact after a hard fall at the bad angle. The USB ports were initially a bit tight, but after some use its just snug.

The display resolution is 1% and is bright (brighter than and very readable. To switch to voltage or current display, there needs to be a current draw out or in. While charging and discharging, the majority of the battery is cool, only the upper parts near the USB ports get warm, which is where the circuitry is.

The powerbank does not have a low current charging function; the outputs needs to draw about > 0.1A total to keep the powerbank on, this means if you connect two devices that draw 0.06A each, the powerbank will remain on. When the total output becomes lower than approximately 0.045A, the powerbank will turn its display off in 5 seconds and the outputs off after 1 minute. So if the screen remains on after 5 seconds, the powerbank will provide power until the current goes under 0.045A. You can press the side button to make the powerbank be on for another minute. Charging the powerbank and connecting a device that draws too little will NOT make the outputs remain on.

Exceeding 3A, the voltage drops quickly. At 0%, the powerbank turns off cleanly (doesn't power cycle). Pressing the button displays 00%, but the outputs do not turn on (0V).

The total possible output is limited to 3A which is also printed on the powerbank. The specs are mostly correct, the 2.1A output port can actually output 3A with a similar voltage drop as the drop at 2.1A. The voltage drop at maximum current is typically around 0.2V. The range of QC3 is 5v-12v, no more, no less. You can't use QC3 and PD at the same time; if you plug in two devices, even if they both support QC3/PD, the power bank will restart and the outputs will remain at 5V.

Pass-through charging is supported, but the powerbank only charges itself if the devices current draw is lower than about 1.8A; if the device draws 0.1A, the powerbank will charge itself at about 1.7A, if the draw is 0.6A, the powerbank charges at about 1.2A and if the draw is 2.1A, the powerbank does not charge and the power is 100% supplied by whatever is charging the powerbank. I have not tried a pass-through that is higher than the powerbank's specs since I'd like to keep using the powerbank. Sometimes there's a delay when you plug in a device before it'll respond to QC3/PD requests.

Connecting two (Romoss) power banks together via type c will just make them power cycle.
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4 people found this helpful
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Reviewed in Australia on 10 October 2019
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5 people found this helpful
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Reviewed in Australia on 25 February 2020
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2 people found this helpful
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Reviewed in Australia on 19 February 2020
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2 people found this helpful
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