There are many times when it's just nice to have a portable backup battery around. For fifty bucks, you can typically snag a pack with a capacity anywhere between 10,000mAh to 15,000mAh, enough to recharge a modern high-end smartphone four or five times. Yet if EC Technology's new external battery pack available on Amazon is genuine, it offers a whopping 22,400mAh of power. That much juice could recharge a phone up to ten times, all for the same $49.99.


Amazon shows this price point as a savings of $130. But there's an issue - all of the reviews refer to smaller versions of the battery, such as the capable but less mind-blowing 12,000mAh and 16,800mAh offerings. We haven't tested the device ourselves, so we can't verify if it packs as much power as it claims. However, it does seem more plausible than this even larger 50,000mAh battery from some unnamed Chinese company that we seriously doubt is legit. Best to avoid that one.

Overall, EC Technology's products appear to be pretty well-rated. If its new battery is the real deal, this isn't a bad deal at all. If it isn't, well, the worst you may walk away with is a solid 12,000mAh battery instead.

EC Technology 22400mAh External Battery on Amazon

Via: SlickDeals

Bertel King, Jr.
Born and raised in the rural South, Bertel knows what it's like to live without 4G LTE - or 3G, for that matter. The only things he likes sweeter than his tea are his gadgets, and while few objects burn more than a metal phone on a summer day, he prefers them that way anyway.

  • Cory_S

    It says it can charge a GS4 5-7 times, which would be inline for "advertised" specs of a 16,000 Wah charger. I wonder if its a misprint.

    • Di Lu

      Anker only says their 13,000 mAh external battery can charge GS4 more than 3 times http://www.amazon.com/gp/product/B00BQ5KHJW/?_encoding=UTF8&camp=1789&creative=9325&linkCode=ur2&tag=blackfridayanker-20

      So 5-7 times for a 22400 mAh seem to be normal on the same standard.

      • Amit

        If it at 70-80% efficiency, it can charge GS4 max 4 times. But for the EC Technology's 22400mAh external battery, this is a real advertising.

      • Kevin

        Recently, I just purchased a 13000 mAh power bank for $27.99 from EC TECHNOLOGY , but this is not the point. The point is it can really charge my GS4 3.5 times, which is great for me.

        In addition, I ordered a 22400 mAh power bank from EC TECHNOLOGY too. Also, it can give my GS4 5~7 charges as well. The price " $59.99" is impressing me!!!

        Here is the list for US: http://www.amazon.com/gp/product/B00FDK2G2C

    • John Vines

      Keep in mind the energy loss from power transfer.

      • Cory_S

        Yeah, but I'm not sure if that would carry over into advertising specs or not, as there is usually always a real word vs advertised difference in these things.

        • nealho

          It actually seems quite reasonable assuming the advertised capacity is really present. A good rule of thumb is that you'll get 70% of the charge stored by a battery like this into your phone; you can get a little more or a lot less depending on the components and where on the charging curve you do your charging. So at 70% efficiency you'd get right around six charges on your 2600mAhr GS4 battery.

          • http://www.androidpolice.com/ Artem Russakovskii

            This is the right answer. 70% or at best 80% for premium chargers is the real-life capacity of portable batteries. They always advertise the capacity without taking energy transfer loss into account.

    • http://www.androidpolice.com/ Artem Russakovskii

      What @johnvines:disqus and @nealhorowitz:disqus said.

      • Anthony James

        If it isn't, well, the worst you may walk away with is a solid 12,000mAh battery instead.

  • RahulNayak

    22,400mAh WHOA!!!

  • Brian Armstrong

    On my experience battery packs loss a lot of Power during transfer. Recharging a gs4 5-6 seems plausible with the advertised power

  • John Vines

    Reading the reviews, they have a special usb cable you need to use if you want full 2A output. Otherwise you only get 1A.

    • Anthony James

      If its new battery is the real deal, this isn't a bad deal at all.

  • Praveen

    I believe this should be a good deal too. Limeade 18,000 m Ah battery pack with case for $49.


  • Anthony James

    Overall, EC Technology's products appear to be pretty well-rated.

    • Gabernasher

      "Overall, EC Technology's products appear to be pretty well-rated."
      I guess you were quoting the article without quotes?

      • HolyFreakingCrap

        It must be a bot or something cause it does that all over.

        • Gabernasher

          Odd that there's no link to how his aunt George made $4500 dollars last week earning $15/hour in a few hours.

          • Terry

            It's probably trying to simply increase its comment count (build rep) so that when it does post its links about aunt George's big score, the account's less likely to be classified as a spambot by automated systems. A larger number of textually diverse comments would give "Mr." James more surface appearance of being a human using Disqus in good faith.

  • David Lloyd

    Oh, just find the price turns to $59.99. But still interested in it. I contacted their customer service team, was told that the item is going to sell out soon, and the subsequent inventory is on the way, should be in stock in about 3 days, then the price recover to $49.99. I choose to trust them and wait for a while, although i really need it now, who else want to try this power bank with me :-D

  • Mike

    Just arrived...can confirm 22,400...stated on packaging. Comes with two short USB cords with a collection of adapters. Does not come with a wall charger. States 2A charger takes 14.5 hours to fully charge. Has a flashlight built in...that's all I've got.