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Most modern smartphones feature thin and light designs, which makes it difficult to cram a battery that lasts longer than a day or two in the case. The Unihertz Tank 3 takes a completely different approach.

It’s a phone with 23,800 mAh battery. How did the company fit it inside a smartphone? By making that phone 31mm (about 1.2 inches) thick. It weighs a whopping 666 grams (1.47 pounds). The Tank 3 is the latest in a long line of truly weird phones from Unihertz, and it’s available for pre-order from AliExpress.

The phone is said to have a list price of $1,000, but it’s on sale for half price at the moment, and you can save an extra $47 with the coupon code 8849TANK3 (plus another $16 if you order between today and November 17th, thanks to the AliEpxress 11.11 sale).

That said, I’d be surprised if Unihertz ever actually tries to charge “full” price for this phone. While it certainly has some interesting specs, it’s a very niche device from a company that doesn’t have a great track record of offering long-term support for its products.

Like the original Unihertz Tank and the Tank 2 that launched earlier this year, the new model is a BIG phone with a big battery. The new model has the highest battery capacity yet, and pairs it with some other beefy specs, including:

  • Display: 6.79 inches, 2460 x 1080 pixels, 120 Hz
  • Processor: MediaTek Dimensity 8200
  • RAM: 16GB (there’s also 16GB of “virtual RAM, which means the phone can treat storage like memory, but this tends to be sluggish compared to real RAM)
  • Storage: 512GB + microSD cards up to 2TB
  • OS: Android 13
  • Rear Cameras: 200MP primary + 50MP wide angle + 64MP (night vision)
  • Front Camera: 50MP
  • Battery: 23,800 mAh
  • Charging: 120W
  • Special features:
    • 40 meter laser range finder
    • IR blaster
    • 1200 lumen LED flashlight
    • Two customizable side buttons
  • Wireless: WiFi 6, Bluetooth 5.3, NFC, GPS, dual-SIM 5G sub-6 GHz
  • Security: Fingerprint reader
  • IP Rating: IP68
  • Dimensions: 179 x 86 x 31mm (7″ x 3.4″ x 1.2″)
  • Weight: 666 grams (1.47 pounds)

The new model doesn’t have a laser projector like the Tank 2. But instead it has a laser range finder to measure distances.

But the main thing this phone can do is last for a long time on a charge. Unihertz claims you should get up to 1,800 hours of standby time, 118 hours for phone calls, 98 hours while listening to music, or 48 hours of video playback. But thanks to support for 120 watt fast-charging, you should be able to plug the phone in for 90 minutes to get a 90% charge.

You could also use the phone as a power bank to charge your other devices on the go thanks to support for reverse charging.

It’s also a rugged device that’s designed to survive a fall from heights up to 1.5 meters (about 5 feet) or submersion in up to 1.5 meters of water for as long as 30 minutes. There’s even support for using the camera while underwater.

But we’re talking about a phone that weighs nearly 1.5 pounds, making it the sort of device that you might want to take on a camping trip, but which I can’t imagine wanting to stick in my pocket and carry with me every day.

Wondering how big this thing is in real life? YouTuber J. Williams has a hands-on video that should give you a pretty decent idea:

I sometimes wonder if Unihertz makes phones that are actually designed to be used, or if they’re really made as novelty items for collectors. Some of the company’s other recent models including the Unihertz Luna with a Nothing Phone-style LED light bar on the back, Unihertz Jelly 2E with a 3 inch display, and the Unihertz Titan Slim, which is the company’s latest BlackBerry clone.

via Phablet.jp

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  1. Don’t buy it I bought the tank 2 and it broke after 3 months and unihertz don’t want to know nor eBay or the seller you will be throwing your money away

  2. I actually kinda like the options that these companies are offering… if it wasn’t for the lack of updates and problems inherent to origin – such as warranty. Plus the fact that I like a full feature USB-C port there.
    Other than those, I usually find the smartphones that are coming out from China more interesting than what Samsung and Google have to offer these days. Or Apple. Honestly.
    All these new fangled tech trends of smartphones in the west for almost the past decade or so speaks nothing to me. Bezel less, AI, punch hole camera, under display fingerprint scanners, flexible displays, yadda yadda.
    Of course, these same trends Chinese brands also go after, because you need to keep up with it, but I keep feeling there’s too much waster opportunity to go after usability and compatibility targets there.
    Apple used to have more focus on this, but lately it just looks like it’s doing the same thing that Android is doing – so this is a platform agnostic problem.
    IMHO, others can disagree of course.
    I just think it’s past time we had more physical controls on a smartphone, better usage of it’s resources and capabilities, we should be able to use it as a computer replacement already given SoC power and whatnot, but these things keep being relegated to niche models, so I keep looking at niche models.
    A huge battery for me would be nice to take a smartphone on a trip without having to also lug an external battery, particularly if it can work as one for all my other devices.
    I don’t travel enough to justify having this smartphone as my main or even as a backup phone, but I bet there is a market for it… again, if it wasn’t for the massive downsides.
    But say you could buy a Pixel or Samsung phone with a battery that big. You know, I think it’d sell more than people expect.
    The ruggedness and features that attends to needs of specific industries, those might not be huge plusses… but in the past you had smartphones with infrared cameras and features like those that sold more than people expected too, so…

    1. Huge battery means nothing if you don’t actual optimize your phone to take advantage of what you want to achieve. If what they aim is to give better battery life choice of cpu, display matter but these OEMs will choose cheapest one they get.

      I find Sony Approach more practical you get normal 5000mah battery but everything is optimized to take advantage of that battery from most efficient soc available, most efficient display, weight etc. Phone like Xperia 10 V has better battery life than most of these bricks.

      1. This.
        While I’m usually on the side of practicality, and that more is more. Well this is too much. It’s too far on the other end of the spectrum.

        The iPhone 15 has a tiny battery, and lasts basically 1-day. This has about x7 or more larger capacity. So you’d expect it to have 1-week battery.

        The best of both worlds, would be to have a phone around 9.9mm thickness, stuff in as much battery, and make it efficient.

        Or have it designed with User Removable Battery. People can hotswap their cells to get a full charge within seconds rather than hours, and it barely costs them any space in their pockets or backpacks. See the Samsung xCover 6 Pro to see what can be done.

      2. Sony…. have had bad experiences with this company. Products were once ok back in 80s and early 90s but late 90s this company should be avoided like the plague.

    2. “I just think it’s past time we had more physical controls on a smartphone, better usage of it’s resources and capabilities, we should be able to use it as a computer replacement already given SoC power and whatnot, but these things keep being relegated to niche models, so I keep looking at niche models.”

      Agreed. The Nokia XR21 is a more serious attempt at a mainstream phone with these advantages than this Tank. It has two programmable keys and the battery life is great. Sadly, it lacks video out to use as a computer replacement, but that solution is rare.

    1. If the battery cell is rated at ~4V like other phones, you still can. Airlines typically limit battery capacity to 100Wh, meanwhile this; 4V*23.8Ah = 95.2Wh.