I have an older 20 channel scanner. I lost the power supply. I have a charger for my sons power wheel which reads 12V-1.0A. The scanner takes a 12V 300Ma I took the scanner apart to locate the neg. and pos. I plugged in the charger and ran leads to the scanner it came on and did what it should after a few seconds I disconnect. Not sure if prolonged what would happen. I checked the charger output voltage that was plugged into the hot receptacle. My meter was showing 13.4 volts. Awhile back I overloaded the meter and its acted up since then. So the 13.4 may not be exact. My question can I use the charger to power up the scanner. And can you recalibrate a knight k-810 volt meter? after the OL I checked the fuse and it was still good.
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