A powerful charger for many devices.

A few years ago, I reviewed the Omnicharge Omni20, a portable power bank that was compatible with nearly every type of device. Since then, I’ve tested dozens of different power banks and chargers. And, while manufacturers have devised a way to make portable chargers compatible with more than one device, they haven’t quite gotten to Omnicharge’s level. In the four years since I’ve reviewed the Omni20, Omnicharge has released many more products including the Omni Ultimate, which is designed to take the best features from all of Omnicharge’s products and roll them into one charger. I’m really excited to be able to take a closer look at it now. 


The Omni Ultimate is considered the ‘new generation of power’ by Omnicharge. It’s available as a 120V or 230V power option and has a capacity of 38,400mAh. It features a full-size AC wall outlet along with a 60W USB-C PD outlet. In addition to those two connection options, the ultimate has a DC out port and USB-A ports as well. The voltage and amperage are adjustable thanks to its 150W high-powered DC port. Even though the device is rechargeable through either the barrel port or the USB-C Port, a battery only lasts so long. Thankfully, Omnicharge designed the Ultimate with a removable battery that can be replaced. Perhaps one of the best features is the OLED screen. It shows exactly how much power your devices need and how much the Ultimate is providing. The Omni Ultimate is capable of charging the following devices: 

  • Action Cam – up to 20 charges
  • DSLR – up to 12 charges
  • Drone – up to 4 charges
  • Smartphone – up to 10 charges
  • Tablet – up to 5 charges
  • 15” laptop – up to 2 charges
AC/HVDC OutletOutput: 120W (120V/60Hz US model, 230V/50Hz EU model)
USB-C PortInput: USB-PD, 5V~20V, up to 3A, 60W max
Output: USB-PD,5V/3A,9V/3A,12V/3A,15V/3A,20V/3A, up to 3A, 60W max
USB-A OutputPort1 and Port2: QC 3.0,5V/3A,9V/2A,12V/1.5A
5.5 x 2.5mm Barrel PortInput: 5~25V, up to 4.5A, 90W max
Output: Adjustable 5V – 60V with 0.1 Accuracy, up to 8A (150W max)
BatteryCell Type: 18650 Li-ion battery
Capacity: 38,400mAh, 142Wh ± 5%
GeneralWeight: 3.08 lbs (1.4 kg)
Dimension: 6.6″ x 5.7″ x 2.1″ (167.5 x 145 x 54 mm)
Warranty: Limited One (1) Year
Operating temp: Temperature 0°C-40°C,Humidity 30-70%,Altitude ≤2000m


The Omni Ultimate is a very welcome device in our home. It seems like we are constantly on the go these days and always needing multiple types of power banks because of all the different devices we carry with us. On any given outing we usually take laptops, tablets, DLSR cameras, smartphones, and headphones. So, the Ultimate charger seemed to be a good option for our needs. The charger comes in a very large box. It’s not exactly a compact device. The charger weighs 3.08 pounds on its own and that doesn’t include its charging cable. While I’m on that topic, I want to note that while users have the option of charging the unit with a USB-C cable, the main power cable that comes with it consists of a power brick with a DC end and an extension cable that connects to an AC outlet. Even though I would reserve the use of this charger for larger trips, that’s still quite a lot to carry around. There are large capacity power banks that don’t include the AC power outlet, but they weigh far less. For car trips, a power bank of this size isn’t that big of a deal, but if I were to take it on a hiking trip or even through an airport, I might double think taking it with me for fear of it weighing me down. 


Aside from the power cable and the DC adapter, there are no other cables included. This was a little bit of a let-down for me since the Omni 20 came with a variety of adapters for the user to utilize. Fortunately, I have plenty of cables to use for charging devices. 


The operation of the Omni Ultimate is pretty simple. You press and hold the power button for a few seconds until the screen comes on. This will show you how much power is left on the battery. At this point, you can access the menu controls by double-clicking the power button. To navigate through the menus, you use the AC and USB buttons as up and down arrows, then use the power button to select options. The DC output is adjustable and you can select one of four options: 12V/8A, 16.5V/8A, 15V/8A, or 20V/7.5A. You can also turn the display off by tapping the power button once. To enable the AC outlet, USB outlets, or DC outlet, you have to use the appropriate button to turn the port on. For the DC outlet, you have to select the proper output through the menu as described above. 


One of the unique features of this charger is the fact that it has a removable battery. When I noticed this as a feature, I thought it looked as though it might just pop out like a cartridge. As it turns out, you have to remove a lot of tiny screws in order to get the battery removed. There are no tools included to assist with this operation or instructions in the user manual so I didn’t attempt to remove it. 


To test out the charging capabilities of the device, I decided to connect three devices to it at one time – my iPhone 12 Pro (USB-C), a portable light (USB-A), and a Chromebook (AC outlet). Once I got everything plugged into their respective ports, I turned on the charger. The three devices started charging immediately. I also noticed an increase in the charger’s temperature and a slight humming noise coming from the charger. I checked the progress on the iPhone and laptop every 10 minutes by looking at their battery percentages. Unfortunately, the light did not have a battery indicator on it. But, it was charging from the Omni Ultimate’s battery, which was the goal. In addition to the percentages of the devices charging I also kept track of the percentage of the Omni Ultimate’s battery that was being drained as well as its temperature. All the results are recorded in the table below.

iPhone 12 ProGained 36%
Charging Rate: 1.2% per minute
LaptopGained 18%
Charging Rate: 0.6% per minute
Omni Ultimate TemperatureGained 9 degrees
Temperature increase rate: +0.45º per minute
Omni Ultimate BatteryLost 18%
Battery decrease rate: 0.75% per minute


The Omni Ultimate is a solid charger for use with multiple devices. I do think it’s best used when you don’t have to cart it around due to its weight, but it’s a very useful charger to have when you need to power multiple devices. I did find the increase in temperature to be a bit alarming, but it was still within a safe range. Even though I do wish there were a few things that were different about this device, it does its job well and is a very efficient charger.

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