Review: Romoss ACE 10 Power Bank

Romoss ACE 10 Power Bank

Romoss ACE 10 Power Bank










          • Has Two Input ports. One for Micro-USB and the other for Lightning Cables
          • Small Size


          • Low Max Output
          • Large Thickness

          Power banks are basically built on innovation and this all starts with the portability aspect that they all have. The fact that you’re able to charge your devices from anywhere is already such a great part of them. Parts of a power bank that improve that kind of free charging experience are really only able to improve portable chargers. Which is why there are many different types of portable chargers that are able to support their certain traits, such as Rugged power banks, and some also have Built-in Cables.

          This ROMOSS ACE 10 power bank offers something that usually very high capacity power banks have, and that’s the use of 2 Input ports. This makes it very convenient for a lot more people to use this power bank those that use an Android or iPhone are able to get fair usage out of it.


          Power Capacity:

          You can do quite a lot with the power capacity of this ROMOSS power bank because it starts at 10,000mAh. The conversion of power during charging is average, which can mostly be because of the power bank’s low Max Output which we’ll be getting to later. However, the power capacity that’s available is quite good.

          3.7 x 10,000 = 37,000 / 5 = 7,400mAh

          The power banks lose about 3,000mAh through some inefficiencies during charging and at that leave 7,400mAh of usable power. It’s with this power capacity that you’re able to charge smartphones about 2-3 times. Newer smartphones like the Galaxy S7 and Galaxy S8 that have 3,000mAh power capacities are able to charge to full power about 2 times. However, if you have an iPhone that isn’t a plus size, then you’re most likely going to be able to get about 3 full charges there.

           Romoss ACE 10 Power Bank
          (Output Power Capacity = 7,400mAh)
          Phone CapacityRomoss ACE 10 Power Bank
          iPhone SE7,400mAh1,624mAh5,776mAh
          4.5 Full Charges
          iPhone 67,400mAh1,810mAh5,590mAh
          4.0 Full Charges
          iPhone 6 Plus7,400mAh2,915mAh4,485mAh
          2.5 Full Charges
          iPhone 6s7,400mAh1,715mAh5,685mAh
          4.3 Full Charges
          iPhone 6s Plus7,400mAh2,750mAh4,650mAh
          2.6 Full Charges
          Samsung Galaxy S67,400mAh2,550mAh4,850mAh
          2.9 Full Charges
          Samsung Galaxy S6 Edge7,400mAh2,600mAh4,800mAh
          2.8 Full Charges
          Samsung Galaxy S77,400mAh3,000mAh4,400mAh
          2.4 Full Charges
          Samsung Galaxy S7 Edge7,400mAh3,600mAh3,800mAh
          2.0 Full Charges
          Apple iPad Mini 27,400mAh6,470mAh930mAh
          1.1 Full Charges
          Apple iPad Mini 47,400mAh5,124mAh2,276mAh
          1.4 Full Charges

          Mini Tablets

          On the Mini tablets spectrum, the ROMOSS Ace 10 power bank does well too. Since it’s able to charge either an iPad Mini 2 or iPad Mini 4 to their full power at least once. Also, if you’re  a Galaxy Tab user, then this power bank is able to charge a Tab to its full capacity at least once, too.


          If you’re planning on charging a Full-Sized tablet with this power bank then it’s best to know that you’re going to be using the entirety of the power capacity. This is because an iPad Air 2 has a battery capacity of 7,340mAh and an iPad 12 inch Pro tablet has a capacity of 10,307mAh. So an iPad Air will be able to charge to its full power and an iPad 12 Inch is able to charge near full power.

          Output Charging:

          There are 2 USB charging ports on this ROMOSS power bank and even though charging 2 devices at once is great; in this case, there are quite a few flaws. One of the charging ports has a charging speed of 5V/2.1A, which is good as that charging speed is able to charge most smartphones at max speed or near it and iPads have a max charging speed of 2.4A which is quite close to 2.1A.

          The other port has a charging speed of 5V/1.0A, it’s a slower charging speed and it shouldn’t be used unless you’re charging 2 devices at once. However, a charging design like this is quite common, with one port being more powerful than the other.

          What isn’t common is that the Max Output of the power bank is quite low at only 2.1 Amps. This means that if you’re charging 2 devices at once, then each port will most like only be able to Output 1 Amp each. So charging 2 devices will result in an overall slower charging speed for the two devices that are charging at the same time. Which is why it’s best to just charge a single device at a time with this power bank and to do it with the 2.1A port only.

          Input Charging:

          On the bright side, there are 2 Input charging ports. There is a Micro-USB and Lightning Input port and that means that both Android and iPhone users are able to equally take advantage of this power bank. Each of the ports has a recharge rate of 5V/2.1A, but you cannot use both at the same time; you can only use one Input port at a time.

          You should use a 2.4A USB wall charger to recharge it as fast as possible.


          Size and Weight:

          The ROMOSS Ace 10 is a very small power bank, but just because it’s small doesn’t mean that its portability doesn’t have any flaw. This is because there is a flaw, with the power bank being quite bulky to hold.

          It has a length of 3.6 inches, a width of 2.2 inches, and a thickness of 1.2 inches. The thickness is what causes the main problems of portability with this power bank because it’s simply too large to place this charger into your pocket; although it’s understandable because it’s initially a 10,000mAh power bank. The weight of it is 8 ounces so it’s at least lightweight and small enough to be comfortable to hold in a single hand.

          Functional Components:

          All of the functional parts of the ROMOSS Ace 10 are on a single side and this is a great thing because it makes the power bank easier to use.

          On this single side is where you’ll find the 2 USB Output ports, the Micro-USB and Lightning Input port, a power button and a 4 LED power capacity indicators. Charging does start automatically no matter what port you’re using.


          Structure and Material:

          It has a solid build because it uses Aluminum Alloy shell and dropping the power bank from a relatively low height may result in some scratches but isn’t able to damage the power bank.


          On tech build side of things, the ROMOSS Ace 10 has all the necessary safety tech to keep charging safe for you and your devices. It also uses new 26650 battery cells that have higher density and can hold onto a charge for a longer time.


          For the most part, this ROMOSS power bank is going to be highly useful for anyone charging their USB devices and this is because it has 2 Input ports that are able to accommodate Android and iPhone users fairly. The power capacity is also very useful as most smartphones are able to charge to their full power about 2-3 times.

          On the charging speed side, some better work could be done with an ability to have a higher Max Output so even when you’re charging 2 devices at once, the charging speed doesn’t wane too much.



          The power capacity is enough to charge smartphones to full power a few time and even charge some tablets to full power. It needs a higher max Output for Output charging. Usage of 2 Input ports is great and gives the power bank a universal usage.


          It has an overall small size, but what can make the power bank bulky is its large thickness. It’s at least easy to use with all of its functional parts being in one spot.


          The use of an Aluminum shell is able to keep the charger safe.


          The most reliable parts are the power capacity and the use of 2 Input ports to recharge the power bank. In order to make Output charging as reliable as possible, charging a single device at a time is the best option.

          Specs of the Romoss ACE 10 Power Bank:

          • Capacity:            Advertised: 10,000mAh            Real Capacity: 7,400mAh
          • Output:     USB Port 1: 5V/2.1A       USB Port 2: 5V/1.0A      Max Output: 2.1A
          • Input:    5V/2.1A Via Micro-USB Input
          • LED Power Indicators: 4 LED Dotted Power Capacity Indicators
          • Size: 3.6 x 2.2 x 1.2 inches
          • Weight: 8 Ounces


          The ROMOSS Ace has a few strange quirks to it that we wonder why it even has; with its low Max Output and just a little bit overbearing thickness. With that said, the parts that make the power bank shine may just outshine its flaws.

          Review: Romoss ACE 10 Power Bank was last modified: by

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