USB versus MAINS versus BATTERY Powered
Watch out! Let’s take a close look at this little machine to see if it lives up to expectation.
I ordered one of these and on arrival, plugged it in to a USB charger. Note: No USB power supply included! It started up and ran very well. It was pretty quiet too…. for about 30 seconds. Then it went dead quiet.
On closer inspection as to why it died, I found that it roasted the USB charger. I had a look at the label on the machine which clearly states DC 5V 15Watt. That equates to 15/5 = 3Amps. I looked at the charger which states 3.1Amps but further down it states 1.0Amp + 2.1Amp.
What this means is that the 2 USB ports can survive a total of 3Amp draw together. So, maybe if I had a split cable and drew the power from both, it may have survived, although I have my doubts.
If any of you have ordered one of these, for goodness sake just don’t try it on a laptop or any other computer USB slot. It can easily extract the smoke from you computer and believe me, to return the smoke where it came from, is impossible (LOL).
I spent hours trying to find a more powerful USB power supply to no avail.
Also take note that this unit does not have a battery. It can easily be mistaken as a rechargeable unit which it is not.
I ended up getting a buck/boost converter at 8 Amps to power this little monster. It is a bit involved getting all the wiring done and set up. I did it just because I already bought it and really want to see how effective it works. Other than that I will definitely NOT recommend the USB driven model.
Apart from the power issue, the rest of the machine seems to be well made. I am giving it the powered test at this moment. It has run for close on 24 hours and the tank is approx 1/3 filled. The humidity currently is 61% so I cannot expect much more from it.
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Update: We moved the dehumidifier to various spots in the motorhome and tested it. What was amazing was the amount of water it extracted from the wardrobe. The wardrobe is very small – 33cm x 80cm x 175cm – and it extracted about 250ml of water over 2 days.
It may sound like a very long time but one must keep in mind that a lot of the moist is inside the fabric and as it dries the air, moisture will slowly evaporate from the fabric into the drier air before ending up inside the dehumidifier.
So that is one place where it will be operating regularly to keep that moldy smell from surfacing. We are very happy with the effectiveness and the low noise levels experienced so far from this little machine.
The alternative options
Mains and 12Volt
Instead of the USB version, we sourced a dehumidifier with the same look and specifications but it comes with a mains adapter. It does a great job, perhaps a little better than the USB version because it is running at 9Volt instead of 5 Volt.
Due to popular demand, I soured 12Volt and 24Volt adapters with an extension cord so that it can reach most places inside the RV from any cigarette lighter socket.
For those interested, it comes with the mains adapter as standard and the optional 12Volt or 24Volt adapter. Click here to see the product.
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We wish you a dry interior and pleasant boon docking.