Got a powerful smartphone with lots of cool features yet doesn’t have enough battery to keep up with your heavy use? If your answer is yes, don’t worry, you’re not alone. That’s why power banks were invented. And if you’re looking for something with a high battery capacity and fast charging technology, you’re in luck as Romoss is introducing eight new power banks in their lineup. Check them out below.
Author’s Note: There are symbols in the power bank that determines the voltage and ampere capacities of each port. Check them out before proceeding.
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Single Lightning – This symbol has an output capacity of 5V-1A. 
Double Lightning – This symbol has an output capacity of 5V-2.1A.
Fit – This symbol is where Quick Charging technologies (PD, QC3.0/2.0, MTK PE, Samsung FAST, Huawei FCP) are supported (5V-3A or 9V-2A or 12V-1.5A).
Arrow – This symbol is the input of the power bank (5V-2.1A Max)
Arrow Plus – This symbol is the input of the power bank. (5V-2.1A for Lightning port) (5V-2A or 9V-2A for Micro USB)
Table of Contents
Romoss Knight 20
The Romoss Knight 20 carries a 20,000mAh battery capacity. Its design is made up of Chinese “ren” characters which makes it look unique as compared with the other power banks in this list. It has a grain-like texture and a bit heavier than usual but feels solid overall.
It has two USB Type-A output ports at the top – one with single lightning and one with a double lightning symbol, and a Micro USB port (arrow symbol) for input. On the left side is the LED notification for the battery level. The battery button, on the other hand, is located on the other side.
Romoss Knight 20 specifications:
- 20,000mAh Polymer battery
- Simultaneous charge and release
- DC 5V-2.1A Input
- 2x 5V-2.1A, 1x 5V-1A Output
- 2x USB Type-A port
- 1x micro USB port
- Ten-fold intelligent composite protection ( Overcharge, Over-discharge, Over-voltage, Over-current, Power-surge, Temperature, Short Circuit, Recovery, Anti-reverse, Electromagnetic Field)
- Smart sleep
- ~13 hours charge time (requires 2.1A adapter)
- Rated Power: 74Wh/3.7V
- 143 x 82 x 22mm
- PR mass: 437g
- Actual mass: 443g
Romoss LT-20
The Romoss LT-20 is a 20,000mAh power bank that has a unique design compared with the other power banks in the lineup. It has a LED display (black-colored area) with a glossy finish while the rest of the body has a sandblasted texture to avoid scratches. Unlike the Knight 20, the LT 20 has a smoother grainy feel.
There are three ways for the LT-20 to charge — via Micro USB, Lightning, and USB Type-C ports. Just like with the Knight 20, this power bank can charge up to two mobile devices at the same time (one single lightning port and one double lightning port). The LED display shows the battery percentage of the power bank which gives users a better idea about its power level.
Romoss LT-20 specifications:
- 20,000mAh Polymer battery
- 3x DC 5V-2.1A Input
- 5V-1A, 5V-2.1 Output
- 1x Lightning port
- 1x USB Type-C port
- 1x Micro USB port
- 2x USB Type-A port (output)
- LED display
- Scratch proof
- Protections: Overcharge, Over-Current, Reset, Over-discharge, Voltage-Surge, Power-surge, Temperature, Short Circuit, Recovery, RFI protection
- Rated Power: 74Wh/3.7V
- 167 x 82.5 x 23mm
- PR mass: 472g
- Actual mass: 471g
Romoss Sense 6 Plus
The Sense 6 Plus has a simple white sandblasted design with gray-colored sides and has the same texture as the LT-20.
The Sense 6 Plus comes with the Fit-charge technology which has faster-charging capabilities than the double lightning port beside it. Another feature is its ability to charge up to three mobile devices thanks to the bi-directional USB Type-C port that can also serve as either input and output ports. Beside it is the Arrow Plus Lightning and Micro USB ports. The blue-colored power button still sits at the right side but the LED notification for the battery level is now sitting in front.
Romoss Sense 6 Plus:
- 20,000mAh Polymer battery
- 5V-2.1A (Lightning), 5V-2A or 9V-2A (Micro USB), 5V-2A or 9V-2A Input
- 2x 5V-3A or 9V-2A, 1x 5V-2.1A/3A Output
- 1x Lightning port
- 1x Micro USB port
- 1x USB Type-C port
- 1x USB Type-A port
- 1x USB Type-A port (For Fit/Fast charging)
- Ten-fold intelligent composite protection ( Overcharge, Over-discharge, Over-voltage, Over-current, Power-surge, Temperature, Short Circuit, Recovery, Anti-reverse, RFI Protection)
- Rated Power: 74Wh/3.7V
- 167 x 80 x 22.6mm
- PR Mass: 466g
- Actual Mass: 461g
Romoss Sense 8
The Sense 8 has a high capacity at 30,000mAh which is the perfect power bank for heavy users or those who carry multiple devices. There’s nothing unique with the design, however, and has the same sandblasted-material as the Sense 6 Plus. In the hands, the device feels like you are holding a heavy brick so you have to be mindful where you put it. But seriously, it is bulky and is so far the heaviest power bank that I’ve tested.
Button, LED, and port placements are the same with the Sense 6 Plus. Two USB Type-A ports (one single lightning and one double lightning) for the output and three (one lightning port, one micro USB, one USB Type-C port) inputs.
Romos Sense 8:
- 30,000mAh Li-Po battery
- 5V-2.1A (Lightning), 5V-2.1A (Micro USB), 5V – 2.1A (USB Type-C) Input
- 5V-1A, 5V-2.1A Output
- 1x Lightning port
- 1x Micro USB port
- 1x USB Type-C port
- 1x USB Type-A port
- 1x USB Type-A port
- Rate capacity: 20,000mAh
- Conversion rate: 85% or more
- Ten-Layer Smart Protection Design (Overcharge, Over-discharge, Over-current, Power-surge, Temperature, Short Circuit, Recovery, Anti-reverse, RFI, Reset)
- Charging Time: 16-18 hours
- 167 x 81 x 32.8mm
- PR mass: 672g
- Actual mass: 670g
Romoss Sense 8 Plus
The Sense 8 Plus is basically the Sense 8 but with improved features like the Sense 6 Plus. It has two USB type-A output ports (Double Lightning and Fit) and a bi-directional (input and output) USB Type-C Fit port. Lastly, there are two input ports (Lightning and micro USB).
Romoss Sense 8 Plus:
- 30,000mAh Li-Po battery
- 5V-2.1A (Lightning), 5V-2.1A or 9V-2A (Micro USB), 5V – 2.1A or 9V-2A (USB Type-C) Input
- 2x 5V-1A or 12V-1.5A, 1x 2.1A Output
- 1x Lightning port
- 1x Micro USB port
- 1x USB Type-C port
- 1x USB Type-A port
- 1x USB Type-A port
- Rate capacity: 19,500mAh
- Ten-Layer Smart Protection Design (Overcharge, Over-discharge, Over-current, Power-surge, Temperature, Short Circuit, Recovery, Anti-reverse, RFI, Reset)
- Rated Power: 111Wh/3.7V
- 167 x 80 x 32.88mm
- PR mass: 671g
- Actual mass: 670g
Romoss Longuard SE10+
The Longuard SE10+ is definitely the most compact of all the power banks that Romoss sent us. It’s twice as small as the one that we mentioned above — twice as light too! It has a black matte overall finish, which feels smoother than the sandblasted texture.
What I personally like about this power bank is its USB Type-A Fit port along with the dual lightning and USB type-C Fit ports which serve as the output. There are two ways to charge the power bank — via the micro USB or the, you guessed it, the USB type-C Fit port.
Romoss Longuard SE10+:
- 10,000mAh battery
- 5V-2A/9V-2A, 5V-2A/9V-2A input
- 2x 5V-3A or 9V-2A or 12V-1.5A 1x 5V-2.4A Output
- 1x Micro USB port
- 1x USB Type-C port
- 1x USB Type-A port
- 1x USB Type-A port
- Rated Power: 36Wh/3.6V
- 103 x 61 x 30mm
- PR mass: 306g
- Actual mass: 307g
Romoss Polymos 20
And just like that, we’re back with the usual form factor of Romoss in the form of the Polymos 20. It has the same sand-blasted texture with the first five power banks that we mentioned earlier so you already have a pretty good idea on how it feels.
It comes with three ports namely Double lightning, Single lightning, and the Arrow. With this, you can already guess that this power bank is one of the brand’s budget devices in their arsenal.
Romoss Polymos 20:
- 20,000mAh battery
- 5V-2.1A input
- 1x 5V-2.1A, 1x 5V-1A Output
- 1x Micro USB port
- 1x USB Type-A port
- 1x USB Type-A port
- Rated Power: 74Wh/3.7V
- 160 x 80 x 22.6mm
- PR mass: 445g
- Actual mass: 444g
Romoss Sense 6P
Don’t confuse the Romoss Sense 6P with the Sense 6 Plus as the former has a LED indicator for the battery charge like the LT20. Its body still has a sand-blasted texture like its heavier sibling. Yes, the Sense 6P is lighter than the Sense 6 Plus.
Like the Polymos 20, it only has three ports — 1 for the Arrow input and two for the Double lightning and Single lightning ports combo. For me, It’s nice to have a battery percentage indicator than to guess the remaining juice of a power bank.
Romoss Sense 6P:
- 20,000mAh battery
- 5V-2.1A input
- 1x 5V-2.1A, 1x 5V-1A Output
- 1x Micro USB port
- 1x USB Type-A port
- 1x USB Type-A port
- Rated Power: 74Wh/3.7V
- Battery percentage indicator
- 160 x 80 x 22.6mm
- PR mass: 437g
- Actual mass: 438g
We also tested each power banks’ USB Type-A ports to see how they perform. We used various smartphones (two smartphones with batteries above 50% and the other two below 30%), a 5V/3A USB Type-C cable, and a USB power monitor.
Do note that results may vary depending on the device and charging technologies they support.
| Romoss Knight 20 | Single Lightning port (5V/1A) | Double Lightning port (5V/2.1A) |
|---|---|---|
| Huawei Mate 10 | 5V/1.56A (7.85W) | 5.05V/1.15A (5.60W) |
| Xiaomi MI 8 | 5.02V/1.69A (8.48W) | 5.02V/1.69A (8.48W) |
| Cherry Mobile Flare S6 Premium | 5.02V/1.82A (9.14W) | 5.06V/0.64A (3.24W) |
| Huawei Nova 3 | 5.01V/1.56A (7.86W) | 5.03V/1.13A (5.68W) |
| Romoss LT-20 | Single Lightning port (5V/1A) | Double Lightning port (5V/2.1A) |
|---|---|---|
| Huawei Mate 10 | 4.98V/1.35A (6.67W) | 5.01V/1.14A (5.03W) |
| Xiaomi Mi 8 | 4.96V/1.69A (8.40W) | 4.96V/1.69A (8.40W) |
| Cherry Mobile Flare S6 Premium | 4.95V/1.71A (8.46W) | 5.06V/0.64A (3.24W) |
| Huawei Nova 3 | 4.98V/1.44A (7.17W) | 5.01V/1.15A (5.76W) |
| Romoss Sense 6 Plus | Double Lightning port (5V/2.1A) | Fit port (5V/3A or 9V/2A or 12V/1.5A) |
|---|---|---|
| Huawei Mate 10 | 4.96V/1.31A (6.49W) | 6.62V/1.86A (12.31W) |
| Xiaomi Mi 8 | 4.92V/1.69A (8.33W) | 6.41V/2.64A (16.89W) |
| Cherry Mobile Flare S6 Premium | 4.92V/1.71A (8.41W) | 6.62V/0.70A (4.67W) |
| Huawei Nova 3 | 4.96V/1.32A (6.55W) | 5.04V/1.68A (8.41W) |
| Romoss Sense 8 | Single Lightning port (5V/1A) | Double Lightning port (5V/2.1A) |
|---|---|---|
| Huawei Mate 10 | 5.01V/1.54A (7.79W) | 5.03V/1.18A (5.87W) |
| Xiaomi Mi 8 | 5.00V/1.69A (8.48W) | 5.01V/1.69A (8.46W) |
| Cherry Mobile Flare S6 | 4.99V/2.06A (10.28W) | 5.04V/0.96A (4.84W) |
| Huawei Nova 3 | 5V/1.51A (7.55W) | 5.01V/1.15A (5.76W) |
| Romoss Sense 8 Plus | Double Lightning port (5V/2.1A) | Fit port (5V/3A or 9V/2A or 12V/1.5A) |
|---|---|---|
| Huawei Mate 10 | 4.91V/1.05A (5.15W) | 6.62V/1.86A (12.31W) |
| Xiaomi Mi 8 | 4.87V/1.69A (8.24W) | 6.39V/2.64A (16.68W) |
| Cherry Mobile Flare S6 Premium | 4.88V/1.57A (7.71W) | 6.62V/0.67A (4.30W) |
| Huawei Nova 3 | 4.92V/1.20A (5.90W) | 6.62V/0.47A (3.11W) |
| ROMOSS Longuard SE10+ | Double Lightning port (5V/2.1A) | Fit (5V-3A or 9V-2A or 12V-1.5A) |
|---|---|---|
| Huawei Mate 10 | 4.89V/0.96A (4.74W) | 6.62V/1.85A (12.24W) |
| Xiaomi Mi 8 | 4.83V/1.68A (8.11W) | 5.98V/2.62A (15.66W) |
| Huawei Nova 3 | 4.87V/0.93A (4.53W) | 6.62V/1.04A (6.88W) |
| Romoss Sense 6P | Single Lightning port (5V/1A) | Double Lightning port (5V/2.1A) |
|---|---|---|
| Huawei Mate 10 | 4.98V/1.35A (6.67W) | 5.01V/1.14A (5.03W) |
| Xiaomi Mi 8 | 4.96V/1.68A (8.33W) | 4.96V/1.69A (8.40W) |
| Huawei Nova 3 | 4.98V/1.41A (7.02W) | 5.02V/0/93A (4.66W) |
| Romoss Polymos 20 | Single Lightning port (5V/1A) | Double Lightning port (5V/2.1A) |
|---|---|---|
| Huawei Mate 10 | 4.91V/1.11A (5.45W) | 4.96V/1.30A (6.44W) |
| Xiaomi Mi 8 | 4.92V/1.69A (8.31W) | 4.91V/1.68A (8.24W) |
| Huawei Nova 3 | 4.93V/1.23A (6.01W) | 4.96V/1.28A (6.34W) |
Observations: Single Lightning ports are getting higher ampere readings than the Double ones especially when it’s been already established that the former can only reach a 1A capacity as compared with the latter’s 2.1A. The Huawei smartphones achieve “Fast Charging” status when connected to the Fit port.
Well, there you have it! Those are the eight Romoss power banks that can help you get through those “low-bat” moments.
Here are the prices of each power banks:
- Romoss Knight 20 – Php949
- Romoss LT20 – Php999
- Romoss Sense 6 Plus – Php999
- Romoss Sense 8 – Php1,299
- Romoss Sense 8 Plus – Php1,399
- Romoss Longuard SE10+ – Php899
- Romoss Polymos 20 – Php829
- Romoss Sense 6P – Php869
Would you get one? Let us know your thoughts in the comments section below.
i bought the romoss sense 6 yesterday. i tried to use all its baterry then as im gonna charge overnight then i opened it still lowbattery the light still blinking on 10%. what should i need to do??
How to order? And how can i be so sure that this is legit?
The fast charging is not working on mine note 9
How to avail?
how to know when your bought one of this romoss powerbank is original or fake
i buy one sense 6p black and then to fast discharge and too fast charge when i charge it
Obviously, if the price is too low. 2nd, you can verify it on their website using the code on the side of the box after scratching it.
Bought a romoss sw20 pro. Couldn’t charge the powerbank even using 18w adapter. Led light keep blinking at 10% and its brand new. Please advice.
hello what best for oppo f9?
Hello! Which one’s best for an iphone Xs MAX?
Will be using it primarily for a mountain climb, about 3-4 days, and for 1 gadget only.
And where can I purchase it? Thank you
Romoss sense 8 + pocof1/note 9= walang tulugan