ECO-WORTHY 5A User Manual page 12

2) DC Adapter Mode
AC power is connected with the wall socket properly,Press"MODE"Key for 3-5
seconds,The device will enter DC adapter mode.the LCD signal will show "DC",it can
supply 120-Watt output (12V-DC & 10-Amp)
3) Battery tester Mode
The charger can be used for testing your battery healthy.Correctly connect your
battery positive and negative with the charger leads, no need to connect AC power.
The LCD display will indicate battery indicator 20-100%,"BAT LOW" will be indicated
while the battery voltage is LOW,easily to know your battery status.
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