Amazon.com: Customer reviews: Omni 20+ 20000mah Laptop Power Bank Portable Charger | AC/DC/USB-C/Wireless Battery Backup for Laptops:MacBook Pro/Dell/Surface | Cameras:Canon/Nikon/DSLR/DJI Drones

Top positive review

No problem charging my MacBook Pro

Reviewed in the United States 🇺🇸 on May 19, 2023

I am always on my laptop, and it is never plugged it. It gets an overnight charge, and then we are off and running all day long it's usually done by about 2 o'clock, so I plug it into the Omni, I charge it while I'm working, and by the time the Omni is depleated the MacBook Pro is full and I've got another six or seven hours of charge left. The thing is great.

Top critical review

All critical reviews›

1st charge problems

Reviewed in the United States 🇺🇸 on March 23, 2023

The device would not charge to 100% in 48 hrs. Finally charged to 100% on the third try. Tech-support said it was a calibration issue.

1,785 total ratings, 1,015 with reviews

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From the United States

Jennay

No problem charging my MacBook Pro

Reviewed in the United States 🇺🇸 on May 19, 2023

Reviewed in the United States 🇺🇸 on May 7, 2023

Verified Purchase

Well... This is a great battery, dont get me wrong. 110v plug, lots of battery life, fast charge, but it IS NOT small. This will not fit in your pocket unless youre wearing clown pants. The perks definitely outweigh the bad.

2 people found this helpful

Helpful

David Wrobel

Updated. Most flexible power bank.

Reviewed in the United States 🇺🇸 on February 28, 2023

Verified Purchase

I had purchased one of these in 2019 and it worked fine for 4 years - stopped holding a charge so I bought a replacement unit. The new one has NO USB-C port, even though the Amazon page description, box photos, and instruction manual all refer to a USB-C port for both charging and power delivery. The port is just missing! I'm returning the item and will move to a different solution.

UPDATED: Omnicharge reached out to me, indicating that I had somehow gotten a very, very old unit, as the first generation did NOT have a USB-C Port - they suspected someone bought one, swapped in an old unit and returned it to Amazon.

In consideration for my aggravation, they gave me a discount on purchasing one directly from their site, which I did, and I am happy to report that the replacement one I got was exactly as expected. The combination of an AC plug, USB-C power, twin USB-A ports, a Qi charger, and excellent functionality to show exactly what is happening on the small OLED screen makes this the most well-rounded charger around. It is not cheap but does everything you need. I recommend it if you need that flexibility. I am also impressed by the company's support process, reaching out to fix my issue with the first unit I got from Amazon.

6 people found this helpful

Helpful

Tony

Awesome!

Reviewed in the United States 🇺🇸 on May 12, 2023

Verified Purchase

Performed just as described so far and bought it with a hard case. Looking forward to traveling with this!

One person found this helpful

Helpful

Chris

highly versatile power bank

Reviewed in the United States 🇺🇸 on November 1, 2019

Verified Purchase

The box for the Omni 20+ says it will “power anything anywhere”. That might be overstating its capabilities, but it will certainly power many things in many places. What sold me on it was the variable DC output. You can control both the voltage (1V – 25V in 0.1V increments) and the maximum current (0.1A – 5.0A in 0.1A increments). With the right cable and adapter, you can power your camera for a long while – great for night sky photography if you're doing long exposures or lots of shorter exposures. Setting aside the Omni Ultimate, this is the only power bank / portable DC power supply that I've found that has variable DC output. Some other brands of power supply have stepped DC output, say, with 5V, 9V, 12V, 16V, and 20V, but these are inconvenient if you need something in-between, say, 7.5V to run your camera. You might cobble together a solution with 5V output and a step-up voltage device, or very inefficiently use the AC inverter with an AC/DC adapter, but Omnicharge's solution – direct DC output of whatever voltage you need – is a lot simpler and more efficient.

The Omni 20+ has also got a USB-C PD port with up to 60W output, 2 USB-A ports, each with 5V and up to 3A output, an AC inverter with 120V output up to 100W, High Voltage DC output through that same AC port (useful if your laptop, for instance, has a switched mode power supply), and wireless charging of your phone on the top surface. The two ports for variable DC output and USB-C output also double as input ports for charging the internal 20,000 mAh battery. You select whether you want input or output using the front panel buttons and the tiny OLED display.

Another reviewer complained that this device is heavy. I don't agree. You can certainly find lighter-weight power banks without an AC inverter (though the weight depends in large part on the battery capacity) and maybe you can find a few AC inverters without an internal battery that are lighter, but I'm not aware of any combined power banks and AC inverters that are lighter than the Omni 20+. Nearly all such devices I've seen weigh at least 2 pounds, against the 1.4 pounds of the Omni 20+.

There are some negatives. This thing is fairly expensive at $200, even if it does do a lot. You don't get a charger with it (unless you buy the more expensive Omni 20 bundle). A fast USB-C charger will probably cost at least $25. A more complete user manual would be helpful. The included manual is fairly thick but it only explains about “battery calibration”... in 10 or 12 different languages. There is some useful information on the Omnicharge website but it's scattered on different pages and it's incomplete. I spent some time pushing buttons in different combinations to figure out all the features. I still don't know what all the icons on the display represent. While the website has some information about the display, I think it must be for an earlier model – it certainly does not describe some of the icons on my display. The wireless charger is kind of flaky. At least with my phones, it's extremely sensitive to the placement and orientation of the phone. Often, after I've carefully placed the phone on top, the display on the Omni 20+ will initially indicate that it's charging (as does the phone), but when I check a few minutes later, it has stopped charging. This is not simply a problem with my phones – I have other wireless chargers that work much more reliably with the same phones.

10 people found this helpful

Helpful

Amazon Customer

Works with my laptop!

Reviewed in the United States 🇺🇸 on May 6, 2023

Verified Purchase

Very happy with this - will help me keep my computer charged through my full days at college

One person found this helpful

Helpful

Alex

Great product

Reviewed in the United States 🇺🇸 on May 10, 2023

Verified Purchase

Light weight compared to others.

One person found this helpful

Helpful

Amazon Customer

Great for traveling and fast charging, but not perfect for CPAP

Reviewed in the United States 🇺🇸 on February 6, 2020

Verified Purchase

The good:

1) Paired with a 45Watt+ USB-C charger, you can *recharge* this battery incredibly quickly (in ~1.5 to 2 hours). When travelling or camping, this is *extremely helpful* as you can rapidly charge this big brute while and charge other devices later. If you only have one outlet, plug this in first - in 10 minutes you can get 1000mAh, 80%+ of which you can transfer to another device.

I used the RAVPower 61W Wall Charger PD 3.0 USB C and it constantly recharged at 45W+, which is 3x faster than most batteries this size or fast charging phones.
2) The USB- C out is great. Can be used for laptops and fast charging phones.
3) You can get a DC to Magsafe 2 cable to charge older Macbook Pros, which is a good way to extend working day with an older computer
4) Passthrough charging works great. You can add two other batteries/devices to recharge via USB. It appears to charge itself first, then the others. You can also charge this battery while using the AC out. (see more below)

Cons:
I bought this battery hoping to power a CPAP (Resmed Airsense 10) via the DC output with a battery pack that can go on a plane. Unfortunately I didn't look closely at the DC power out amperage and this isn't high enough. I ended up using the much less efficient AC outlet, which gives 4 to 6 hours of CPAP usage. To extend the battery, I hooked up another big battery charging *into* the omnicharge via the USB-C port, while the Omnicharge was powering the CPAP. Weirdly, I had to first plug in the ac cord, with the dc out cord to the CPAP *unplugged*, turn on the AC charge then plug in the DC cord to the CPAP. (If I did this the other way, the overcharge circuit would kick in). Then once charge is going out, I plugged in the other battery to the Omnicharge via the usb c (I did this using a USB A to USB C cord, using a socket on the other battery that was output only). If using USB C to USB C, I'm not sure you can control which way the charge is going to try to go.
2) Occasionally, the battery appeared confused about whether it should take a charge in or out via USB C, and had a device I was trying to charge up appear to lose battery when connected. In that case, I just turned the Omnicharge off and then on, and things went fine.
3) without a case of some sort, the battery screen turns on easily. doesn't seem to be a big deal.

For CPAPs camping the best thing I've found yet is the Jackery 240 with DC out, but that's too big for planes. I'll likely try to pair the Omnicharge with a TalentCell 12/ 11000 mAh battery that has a 12V/6A output, and use the omnicharge to replenish that.

If the next version of this could do 12v/6A out, it would be my dream battery.

8 people found this helpful

Helpful

samuel torres

Omnicharge 20

Reviewed in the United States 🇺🇸 on May 18, 2023

Verified Purchase

The media could not be loaded.

This device is great expectantly when you have a lot of gagets and when you spend a lot of time using radios.

One person found this helpful

Helpful

Possible Microphone

It will change the way you can work on-the-go

Reviewed in the United States 🇺🇸 on November 27, 2020

Verified Purchase

First off - the negatives.
1. The batteries are not of the highest capacity. Just go to youtube and look for videos where tech-savvy people replace the batteries with better ones. However, this should not be a surprising compromise in this highly competitive world of power banks.
2. The price. Like many readers, I was actually interested in buying a battery bank shell and using my own batteries. Unfortunately, there are virtually no good options for this at the time of my research. This unit is more expensive than similar PD power banks with 120V outputs. But it remains popular due to some advantages it has.

There are other complaints that people might have - size, weight, etc. But it's all relative to what this thing can do. Keep that in mind when looking at other options.

The good:
1. It has a reasonable capacity. I can completely recharge the battery of my Dell 7490 laptop. It has allowed me to work for at least 8 hours completely remotely with no power outlets.
2. The display is a useful utility. It makes sense to have a screen if there is something worth displaying - in this case the battery temperature and voltage/wattage. I am an electronics tinkerer so having access to this information is very interesting and also insightful. It's especially useful in determining the best position for your phone when using the Qi charging function. I will note that I have never seen this unit overheat. It remains relatively cool.
3. There is a swiss-army assortment of charging functions. I charge it via the USB-C connector; I haven't used the barrel connector. The 120v outlet is a game changer. I use this to power a desk lamp when having a camp fire outside. I don't use it for much else, but I know that I will have many opportunities. I use the Qi pad to charge my phone if I am taking a call over the headphone jack. It is all very convenient.

Overall, while I have no experience with the direct competitors of this product, I have thoroughly enjoyed the freedom that it has delivered me. Like so many, I have had to change the way I work due to COVID19, and this has been a key asset in helping to meet the challenges created by working on the go.

2 people found this helpful

Helpful

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5 star		77%
4 star		11%
3 star		4%
2 star		3%
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Omni 20+ 20000mah Laptop Power Bank Portable Charger | AC/DC/USB-C/Wireless Battery Backup for Laptops:MacBook Pro/Dell/Surface | Cameras:Canon/Nikon/DSLR/DJI Drones | Smart Devices:iPhone/Samsung

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Omni 20+ 20000mah Laptop Power Bank Portable Charger | AC/DC/USB-C/Wireless Battery Backup for Laptops:MacBook Pro/Dell/Surface | Cameras:Canon/Nikon/DSLR/DJI Drones | Smart Devices:iPhone/Samsung

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