With a Q-tip, carefully smoodge Vaseline petroleum jelly onto the unused terminals. Then there is no worry about silicone getting on them. Yes I am referring to the battery 12 volt DC terminals. The power AC terminals must be buried to the hilt.
NONE of these power supplies seem to have an insulated case. Without a connected earth ground, I am averaging 67 volts AC measured on the case. Make absolutely sure whatever you plug into has a working earth ground terminal on the receptacle. And that on the receptacle "hot" is "hot" and neutral is neutral. Hot and Neutral reversed means 110+ volts AC present on the case.
Connect a DC handheld meter to the alligator clips. Set to 20 volts DC. Turn on the unit, by your switch or by plugging it in. It does fine not connected to anything.
What voltage do you see on your meter?
The blue and white little box to the left of the terminal strip is the adjustment pot. Think of it as having electronic PMS. The slightest twist clockwise with a tiny screwdriver will have the voltage jump upward.
Too touchy but Meanwell's, Megawatts, CheapOwatts, and Lambda power supplies all act the same way. Stupid engineering.
Twiddle, nudge, tweak and do whatever it takes to get 14.4 volts (right hand most meter digit unimportant right now.
Got 14.4 volts? Good.
Turn unit off.
Connect your jumper clamps to the battery posts.
Reconnect the Megawatt.
Monitor the voltage.
Did voltage instantly jump to the same reading as you got when you tested voltage when disconnected? Good.
Or is the voltage lower but rising on your meter? If this is the case you need to wait until it stops rising. Expect disconnected voltage setting and connected voltage reading to be slightly different.
Always use the connected to battery voltage reading.
If you lose "where you're at" voltage setting wise, disconnect from battery and start over. This eliminates "OhgollygeewhizIscrewedup"
This sounds complicated, right? Bet'cha you end up doing a setup in under 15 seconds, especially when you fathom the inherent connected to battery voltage droop and pre-compensate before you connect.
Just watch the sensitivity of that @#$%&! pot. When in doubt, disconnect the jumpers and verify voltage setting.
