From SATURN with love: a bad USB power supply

Recently I needed another USB charger for my devices. I went to Saturn and picked up this Innergie adapter, which is rated for 10W (2A at 5V).

innergie_front

innergie_rear

But, it doesn’t work. Sure, it can put out 2.5A, if you short it. I managed to get 0.6A out of it charging a 24Wh lithium-polymer battery, but at that current the voltage drops to 4.5V, which is outside of the USB specification and will not charge a mobile phone or tablet.

innergie_fluke_voltage_current

When I did plug in a mobile phone, it drew about 0.3A (1.5W) but the charging light did not turn on. The Innergie cannot even hold up at 1.5W, it dropped to 4.75V!

I lost the receipt, otherwise I would return it for my money back. So into the junk pile this goes… Lesson learned, next time save the receipt!

3 thoughts on “From SATURN with love: a bad USB power supply

  1. philectro

    i just mesured 4.75v on my innergie 15w adapter and fall on your blog by this search (4.75v keyword)
    i have paid it 30eur.
    it made by delta electronics which is a “great” brand in power supply.
    warranty 3 years

    it’s not a noname charger…it’s weird.

    Philectro from belgium, joinable on freenode.

    Reply

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