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Xiaomi Mijia 100W Car Socket Power Inverter w/ Dual 5V/2.4A USB Ports $39.50 US (~$52.74 AU) Shipped @ Joybuy

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Xiaomi Mijia 100W Car Socket Power Inverter w/ Dual 5V/2.4A USB Ports $39.50 US (~$52.74 AU) Shipped @ Joybuy
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Clear on 21/05/2018 - 21:02 joybuy.com (4025 clicks)

Cheapest price available as all other sellers are currently selling for more than $45 US.

From the same manufacturer as Xiaomi's popular Powerstrip comes a portable car power inverter that's small enough to fit the cup holder. It features an AU/CN/US type plug with 2 USB ports with a maximum output of 5V/2.4A in a single port or 5V/3.1A in both simultaneously.

Checkout a review here

Specifications:

  • Rated power: 100W, peak power: 110W
  • Input voltage: 12V DC, output voltage: 220V / 50Hz AC
  • USB port output: DC5V 3.1A in all, one with max. 2.4A
Electrical & Electronics Car Charger Power Inverter Xiaomi

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closed Comments

  • bargainshooter on 21/05/2018 - 21:20
    +5

    Yikes that full AC 220v socket next to your coffee cup on a bumpy road…

    • garage sale on 22/05/2018 - 07:43
      -2

      yep even 100w at 220v will kill you

      • rifter on 22/05/2018 - 09:13
        -4

        It is current that kills, not voltage. Between 100mA and 200mA is deadly. 100W at 220V is less than 50mA which if transmitted thru the wrong part of the body could give you a nasty shock. Unless of course if you have a heart issue.

        • whitey1212 on 22/05/2018 - 09:28
          +1

          I think you need to check your units. 100W and 220V would be just under 500mA or 0.5A

        • abb on 22/05/2018 - 09:44
          +7

          It is current that kills, not voltage

          sigh

          This gets repeated all the time, but guess what, V=IR.
          And practically all electricity you'll find is a "constant voltage" supply (ok it's not quite constant, I am aware of supply impedance but it's close enough for our purposes, most sources at least aspire to be a constant voltage).

          In other words, current is a function of voltage.

          Now, what current is dangerous?

          A domestic power supply voltage (110 or 230 V), 50 or 60 Hz alternating current (AC) through the chest for a fraction of a second may induce ventricular fibrillation at currents as low as 30 mA.

          Source https://en.wikipedia.org/wiki/Electrical_injury , emphasis added. This is why household RCDs trip at 30mA.

          Furthermore, the power rating of 100W does not tell you anything about the short-circuit current, i.e. the maximum current that can be delivered. This device is likely to be able to supply multiple amps for a short period (maybe hundreds of amps for some microseconds).

          TL;DR: 220V can kill you regardless of fuse (A) or power (W) ratings.

        • Mikerobertsn on 22/05/2018 - 12:34
          +2

          @abb: Hit the nail on the head, as an electrical engineer, whenever I hear people say its the current that kills you and not voltage I just sigh and stop listening to what they have to say.

        • rifter on 23/05/2018 - 08:15
          +1

          @whitehall:
          Agreed. One for the Darwin awards.

  • [Deactivated] on 21/05/2018 - 21:20
    +2

    Do these fit in cup holders?

    • Clear on 21/05/2018 - 21:21
      +1

      Yes

      • [Deactivated] on 21/05/2018 - 21:22
        +3

        Thought so, very neat design

  • danielh on 21/05/2018 - 21:22

    OK. This actually looks interesting. Anyone with experience using this or a similar product and their thoughts on car battery drainage?

    • [Deactivated] on 21/05/2018 - 21:42
      +6

      A quick search about your car battery would suggest you probably better not run this on battery but depending on your car consumption and alternator, I guess drawing 100 watts should be fine when the engine is running unless you have a very old car.
      To give an idea, a typical alternator produces around 120Amp and your air conditioning uses about 3kW. (W=VI)
      If a car battery puts out about 50 Amp-Hour of 12V then it will be totally drained in 5 hours if you use this on full power say to power a 100W light bulb. You probably would not be able to start the engine in 3 hours. (This is my typical guess and you should seek your professional mechanic advice)

      • Keeno on 21/05/2018 - 22:07
        +10

        3kw power draw on an aircon is about 7 or 8 kw cooling, that’s massive for such a small space, in any case the compressor is rotated via fan belt so does not draw power from 12v system except from the compressor clutch solenoid and cabin fan.

      • ufsta on 22/05/2018 - 07:39

        A SR5 Hilux can handle 120W without a dual battery setup

        • SchnozzBargain on 22/05/2018 - 14:52
          +1

          Most cars can as long as you have a new-ish battery.

          We have a 2016 Mazda CX-5 and it has two 120W outlets (1 at the front and 1 in the boot) which I've used simultaneously a few times.

          I myself drive a 2010 corolla and have a 4-way USB charger which ends up pulling 80-120W if I have multiple family/friends in the car who want to charge devices. Absolutely no issues there. Not sure whether I would want to charge for long with the engine off in winter though.

    • boomramada on 21/05/2018 - 21:43
      +22

      Wise man would use this while engine is running.

    • 777 on 21/05/2018 - 22:57
      +1

      I have similar one like this in Targus lasted me 6 months big and bulky

      Then I switched to Targus car laptop charger(APD046AU) small and sleek and does the same job

      Unless you need 3 prong specifically I would stick with sleek car ones you don't need carry your laptop charger either and comes with half a dozen tips

      • garage sale on 22/05/2018 - 07:44

        charging laptops is all i could think off for only 100w.

        • 777 on 22/05/2018 - 13:53

          using right now, have a power outage in my area
          it is awesome
          https://www.targus.com/au/laptop-car-charger-phonetablet-cha…

        • ozzpete on 23/05/2018 - 03:06

          Im no expert, but i looked into it a little for my campervan setup.
          Nintendo wii only uses 20watts.
          Modern LED/LCD tv, even larger ones use about 70watts I think.
          Cant run heaters, or microwave, or fridge, without alot of wattage. I was pleasantly surprised how little a lcd takes up. And also 20watts for the wii. About 10watts for the playstationTV (which is essentially a psvita in a set top box) . Ps3 uses much more, like 180 watts I think.
          For laptops i have a 12v laptop chargers (90% off when dick smith closed down). Not sure, but for laptop charging the 12v laptop specific charger might be more efficent than this type of inverter.

  • Bellpop on 21/05/2018 - 21:35

    Look cool. What would this be useful for. Serious question

    • Clear on 21/05/2018 - 21:42
      +1

      I'd be giving my Notebook a quick top up inbetween jobs.

      • [Deactivated] on 21/05/2018 - 21:53
        +13

        You can get native 12v adapters. Best to avoid going to 240v and back down again if you can.

      • ausdday on 21/05/2018 - 22:11

        Are you sure your laptop charger only draw less than 500mA? 100w isn't much

        • Clear on 21/05/2018 - 22:13

          I tried to distinguish by saying notebook. It's a China tab.

        • ausdday on 21/05/2018 - 22:18
          +3

          @Clear:

          Well with much cheaper price, you can get 150W which can be useful for more stuffs

          https://www.ebay.com.au/itm/12V-DC-to-240V-AC-150W-Power-Inv…

        • Clear on 21/05/2018 - 22:18
          +1

          @ausdday: Xiaomi.

        • ausdday on 21/05/2018 - 22:28
          -1

          @Clear:

          Not fruit. :)

        • garage sale on 22/05/2018 - 07:46

          mine draws 65w to do screen and charge.

        • Alzori on 22/05/2018 - 08:55

          @ausdday: laptop charger would draw more than 500mA but at a lower voltage, so the power could be less than 100W. Some laptop chargers go towards 200W, so best to check the power rating.

          So we're clear, when transforming voltages the current changes too. It's the power (Voltage * Current) that is roughly conserved. So that 500mA at 220V could be converted pretty easily to 20V and 5A (typical laptop power adaptor). Transformers don't just cut the voltage down without upping the current.

        • trongy on 22/05/2018 - 09:25
          +1

          Most modern laptops will be less than 100W. I just checked the charger for my 2013 model Dell 14" and it's only 65W. Check your own charger before you buy. Those with 17" monster gaming laptops may over 100W.

      • ashikk on 21/05/2018 - 23:32

        @clear

        giving my Notebook in-between Lap a quick topup

    • garage sale on 22/05/2018 - 05:07

      soldering iron if working on your car, laptop charging as they are typically 19v out and come with 3 pin plug, 240v led worklights, charge cordless tools as most have 240v chargers, watch tv when camping, 100w isn’t much.

      • Bellpop on 22/05/2018 - 06:40

        Thanks mate

  • greatlamp on 21/05/2018 - 21:36
    +1

    The review says it should cost around $30, so presumably it should sell below $45 again in the future

    • Clear on 21/05/2018 - 21:41

      Reviews are being fed through and translated from JD.com. $30 is what the Chinese RRP is and you'd struggle to get it that low from international sellers. $9.50 US more than $30 isn't a big difference considering others sell it for $45-$70 US.

  • eggboi on 21/05/2018 - 21:37
    +8

    Sweet. Now I can finally have air con in my ‘97 Hyundai Excel by combining with this deal: https://www.ozbargain.com.au/node/378144

    • BargainCatch on 21/05/2018 - 21:42

      beware of fire

      • eggboi on 21/05/2018 - 22:01
        +2

        Think of the fire as free heating, it’s a win-win really.

        • matt3 on 22/05/2018 - 08:32
          +1

          Yeah, and as the solid pieces of your car convert to gases via the miracle that is combustion, your car will become more fuel efficient as it gets lighter.

        • idonotknowwhy on 22/05/2018 - 14:57

          @matt3: lmao

    • nagel on 21/05/2018 - 21:56
      +2

      I think they draw more then 100W buddy…

      • eggboi on 21/05/2018 - 22:04
        +6

        Damn I’ll have to wait for a free Udemy course to learn how to wire it straight to the alternator.

      • eggboi on 21/05/2018 - 22:05
        +1

        How many eneloops would I need? 🤔

      • garage sale on 22/05/2018 - 05:09

        yeah 100w isn’t much …..

  • BargainCatch on 21/05/2018 - 21:39

    How much power output can 240V AC have

    • Clear on 21/05/2018 - 21:43
      -1

      Australia's official voltage is 230V AC so 220V is fine.

      • BargainCatch on 21/05/2018 - 21:55

        The output of power is not high

    • bamzero on 21/05/2018 - 22:15

      100w @ 220V, about 0.45A

    • garage sale on 22/05/2018 - 05:14

      typical power board at home is 240v 10amps so 2400w ….so,this does 1/24 what a home power board and power socket delivers ……it’s for small things that do t have 12 v options eg some types of battery chargers are with a power pack and 240v only, laptops are 19v so need the charger and that is 240v input ……

      you won’t run a coffee machine or microwave off it if camping ……maybe small led tv.

  • pointnlarf on 21/05/2018 - 21:49
    +1

    Wish those USB ports were in the body… cause its going to be messy with the cap off… which will be always

  • PaperplaneXXX on 21/05/2018 - 21:50
    +1

    Looks tempting.
    I am a service Engineer driving a lot. Car is an office.
    Who know what might happen - laptop is not super powerful in terms of battery.

    • Clear on 21/05/2018 - 21:55
      +1

      Pretty much the case in mine too.

  • factor on 21/05/2018 - 22:21
    +6

    Cheaper at Jaycar: https://www.jaycar.com.au/150w-can-sized-power-inverter-with…

      • factor on 21/05/2018 - 22:26
        +18

        The Jaycar one has higher power output and is actually legal in Australia. It is also cheaper.

        • Clear on 21/05/2018 - 22:28

          This is also legal to use in Australia and has faster charging USB. How about you post it as your first deal?

        • whooah1979 on 22/05/2018 - 00:13
          +4

          @Clear:

          This is also legal to use in Australia

          Could you please provide the rcm number for this item so that we may check?

        • Clear on 22/05/2018 - 06:41
          -5

          @whooah1979: Why? It doesn't need one to be used. There are no laws against importing this for private use. Importing this for private use and selling it commercially is a different story.

          Unless someone can prove otherwise. Seriously doubt it.

      • Mixhael on 21/05/2018 - 22:31
        +4

        It's a very comparable product. Now if you were comparing, say, an iPhone to an android then there's more than raw specs to consider. However this is a simple power adapter.

      • garage sale on 22/05/2018 - 05:16

        or local warranty to no local warranty.

    • picklewizard on 21/05/2018 - 22:28
      +7

      These Jaycar models have been around forever, too. As much as I dislike Jaycar I think this would easily be the better buy.

      • ahewitt76 on 22/05/2018 - 08:25
        +1

        Why do you dislike Jaycar? I have just started shopping there and there is a new one opening nearby, so just curious.

        Edit: nevermind, I saw the rip off video. It's a shame. What alternatives do people recommend?

        • pinchies on 22/05/2018 - 09:34
          +5

          Altronics is pretty great. I stopped doing Jaycar too.

    • gadget on 21/05/2018 - 22:32

      But will it fit in a cup holder :)

    • doweyy on 21/05/2018 - 22:41
      +11

      I couldn't think of anything worse than buying from Jaycar, they're the scum of the earth.

      • Clear on 21/05/2018 - 22:44

        It's obvious here who supports their dodgy tactics. Shame.

        • 777 on 21/05/2018 - 22:59
          +3

          I would not touch jaycar either

      • garage sale on 22/05/2018 - 05:22
        -1

        read the link ….couch trolls complaining ….some of these people shouldn’t try diy ……

        “broke the tip of the thermal paste tube” ……probably thought it was like toothpaste tube and flips open instead of unscrews …

        • doweyy on 22/05/2018 - 07:16
          +1

          The point I was making is that they completely ripped off a hard working individual, they don't have any morals.

    • DarkNexy on 22/05/2018 - 03:07
      +1

      Cheaper but different product. So your neg is irrelevant to the deal.

    • xev on 22/05/2018 - 05:04
      +2

      How is that completely different product cheaper?

      The Xiaomi one is $52.74, delivered

      The Jaycar one is $59.95

      Might need MathNerd to confirm but that's more expensive,

      And if you add in the $7 postage that's $66.95, delivered.

      • garage sale on 22/05/2018 - 05:37

        its 220v output and at 100w it is actually enough to electrocute someone …..so you’d want to make sure compliant with any australian requirements.

        jaycar is 150w so 50% more juice and you can take it back if there is an issue vs sending overseas.

        • Clear on 22/05/2018 - 06:43

          You didn't answer the question. He asked how a completely different product is cheaper not how it is better.

      • ausdday on 22/05/2018 - 09:10

        It's actually $49.95.

        https://www.jaycar.com.au/150w-can-sized-power-inverter-with…

        • xev on 22/05/2018 - 09:23
          +1

          Actually it's $49.95 now, but was $59.95 when I wrote the comment.

          I checked it several times.

          But as it is a completely different product it seems kinda irrelevant.

        • ausdday on 22/05/2018 - 09:30

          @xev:

          How would you say it's completely different product? It would be like saying ALDI LSD isn't the same product as Eneloop, just because it's not branded as eneloop.

        • xev on 22/05/2018 - 09:44
          +2

          Are you saying this is manufactured by the same people and is exactly same in every way except for the brand name?

        • ausdday on 22/05/2018 - 10:23
          -1

          @xev:

          Well maybe it's just me. But when I want an apple, I don't really care who planted it, nor from which tree it grew on. If it's bigger, cheaper, and a bonus if the seller is local where I can return it if I don't like it, I am ok with it.

          The same thing can be said when I want to buy an inverter, and I was actually looking for 1 for my camping use, to power the air pump. All I need is to convert 12VDC to 220-240VAC. Preferably, I can just walk into somewhere to pick 1 up, try it, and if it doesn't work as I intended, return it. I don't hate XiaoMi product, as I do have a few of them. There is no proof that says the one Jaycar sells has terrible quality as well. But having me to pay more for XiaoMi inverter, for less power, and harder to return, I'll pass.

        • xev on 22/05/2018 - 10:27
          +2

          @ausdday:

          Do you think 'I'll pass' is a sufficient reason to neg this product?

          People are negging this product because a different product is different, or costs a different amount.

          If you can find a cheaper price for this product go ahead and neg it.

        • ausdday on 22/05/2018 - 10:41
          -1

          @xev:

          I am the guy who is kinda lazy to read every single word in the T&C. Perhaps you can show me the rule, that says I can only neg IF and only IF I can find a cheaper deal for that identical item. I am more than happy to revoke.

        • xev on 22/05/2018 - 10:45
          +2

          @ausdday:

          A link for the lazy: https://www.ozbargain.com.au/wiki/help:voting_guidelines

          Appropriate uses of negative vote

          Cheaper price elsewhere
          Mention store or URL and price making sure to include shipping.

          Defective product
          The product has been recalled
          Major issue with product in that it doesn't work the way it should.

          Major issue with retailer
          Didn't receive previous purchase.
          Shipping time exceeding expected wait.

        • xev on 22/05/2018 - 10:55
          +1

          @ausdday:

          I am the guy who is kinda lazy to read every single word you wrote.

          Perhaps you can tell me if any of that is covered by the voting guideline above?

    • SchnozzBargain on 22/05/2018 - 15:04

      Can I use the Jaycar model with the 12V outlet in my car? I'm worried that 150W at 12V will blow the fuse. Most cars can only do 120W.

  • mrhugo on 21/05/2018 - 22:21

    I'm finding conflicting info. It is a modified sine way or pure sine wave

    • picklewizard on 21/05/2018 - 22:30
      +9

      No chance in hell it's pure sine wave.

    • garage sale on 22/05/2018 - 06:07

      sine wave with the usual switch mode noise across it or some steps …otherwise things with transformers wouldn’t work and they would be refunding or needing to put disclaimers on it “do not use with transformers for switch mode applications only “…. and average consumer wouldn’t know if their power pack is switch mode or transformer…..sales would be close to 0

      • garage sale on 22/05/2018 - 07:49

        when i say transformers expand that to things with windings eg motors, etc …. people,would complain about the hum, etc also.

      • garage sale on 22/05/2018 - 07:51

        there are low wattage pure sine wave on ebay for comparable prices so not impossible to manufacture at this cost point.

      • abb on 22/05/2018 - 09:53

        sine wave with the usual switch mode noise across it or some steps …otherwise things with transformers wouldn’t work

        citation needed.

        I've got 1MHz square waves running through transformers on my desk right now.

        This thing will be "modified sine wave" - i.e. marketing speak for "bipolar square wave with dead time".

  • wholistic on 21/05/2018 - 22:25

    I am guessing that is going to be some choppy square wave AC power. Perfect to blow up your unsuspecting step down transformers in your switch mode power supplies.

    Anyone got a review with this thing on a oscilloscope?

    • Russ on 22/05/2018 - 00:05
      +3

      That's not how switchmode supplies work. They rectify the incoming AC, turning it into ~340V DC, then use the switchmode part to turn the 340VDC into whatever voltage you want. At no time does the incoming AC touch a transformer. The rectifier doesn't care what shape the incoming waveform is, in fact if the waveform is "modified sine wave" (square wave appearance) then the peak voltage will be lower.

      Some early laptop supplies had poorly-designed filters on their inputs, which got hot with "modified sine wave". Shouldn't be a problem with modern switchmode supplies, they have much less filtering because their design is better and they don't need much filtering.

      • garage sale on 22/05/2018 - 06:12

        it’s why switch modes are rated for 110v -240v input …. and you can get mains on the output if something fails.

  • didelly on 21/05/2018 - 22:47
    +3

    You can purchase a Projecta cup style 120w unit for not much more https://www.projecta.com.au/inverters-products/12v-120w-modi…
    From my limited research projecta and red arc make some of the better inverters.

    • Clear on 21/05/2018 - 23:57
      +1

      And not by scummy Jaycar so quite a decent buy!

      • garage sale on 22/05/2018 - 05:44

        what is this scummy jaycar stuff all about , some of their stuff is alronics anyway …..

        i’ve never had problems with jaycar stuff ….. other options are altronics and radio parts if you are into diy…..but if you don’t know what you need or are doing it makes no difference.

  • [Deactivated] on 21/05/2018 - 22:51

    I've seen MSW Not PSW :-(
    Also 220V [- 240V]?

    BUT 50Hz!!!

    Would buy if Pure Sine Wave.

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