Replacement for 12V DC 500mA Battery Charger ZNL-D120050

DC Connector polarity: Positive inside, Negative Outside. There are NO EXCEPTIONS! 5.5x2.1mm,5.5x2.5mm,5.5x3.0 mm. 3.0x1.0mm,4.0x1.7mm,4.8X1.7mm.

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