Guest Linda Posted February 22, 2005 Report Share Posted February 22, 2005 My questions concerns what external battery I can use for my portable DVD player. The factory provided battery rates at 7.4V. The power supply is DC 9V, 3A Can I use a universal battery rated at output voltage 9V, output current 5.4 Amp? The adapter plug will fit, but I don't want to hurt my player. HELP...I am not familar with amps and volts..... Quote Link to comment Share on other sites More sharing options...
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