I bought mine because I spend a lot of time in my solar powered caravan and live off the grid. My laptop came with a 110 plug which means I used my inverter to keep my laptop charged. This 12v charger means I can now keep it charged using just the extra 12v plug which means less battery power is being used as the inverter isn't working. I just received the plug and it works, but I haven't used it for a long time.
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