Hello greg jarvis,

Please refer to below cablibration instruction

1. Connecting power supply (20V/1A) and load. (It must be 20V/1A)
2. Short connect two calibrating spots (Open the back cover, you can find two holes which

marked with “W” on board)

4. Turn on the power supply.
5. When the display changed from “CAL—“ into” —PASS”, that means the calibration is finished.

Hello Shady,

Your order#16327 was delivered in July 11. DHL Tracking number: 2767356384

Hello.

Is the frequency within 50-60hz？ Andv what kind of waveform it output?

Best regards.

Hello, from 14.4v to 14v or 13.8v, the difference is too small, actual output may be not very accurate.

Hello,

Whichever converter, it can’t force  load to draw more current. Actual output currenet mainly depends on load. If load just draw 1A, it is impossible to output 2A to load.

For charging battery, it is better to choose converter with current limit feature.

• This reply was modified 2 years, 6 months ago by  Drok.

Hello,

Sorry, we have cleared the mailbox, you can send email now.

Best regards,

DROK

Hello Esteban C,

Sorry, this item is not available any more, so we can’t find relevant inforamtion.