BFL13, put an ammeter on the output of your adjustable voltage powermax. Best 20$ you will spend this month.
I just bought this one in the 50 amp version for my 40 amp meanwell, ships from Canada, should a got the 100amp:
https://www.ebay.com/itm/50A-100A-Voltage-DC-Voltmeter-Current-Power-Meter-Energy-tester-Charger-Ammeter/264288477006?hash=item3d88d21f4e:m:mZfKuBsQ86hjmFx0ncyeQTAhttps://www.ebay.com/itm/50A-100A-Voltage-DC-Voltmeter-Current-Power-Meter-Energy-tester-Charger-Ammeter/264288477006?hash=item3d88d21f4e:m:mZfKuBsQ86hjmFx0ncyeQTA
I like the external shunt and the very small clear OLED display.
The amperage is quite accurate, and has a tiny trim pot to dial it in closer.
Voltage on mine reads 0.1v low, which irritates me greatly, but I'll get over it.
Its unidirectional. Just counts juice flowing in one direction. Volts ,amps, watts, amp hours, watt hours, and has an ambient temp sensor on the backside of the display too. I put 45 amp anderson powerpoles on mine input and output, can discharge the battery with a load for x amount of time, note the Ah and WH Flip input and output around, reset it, then charge it, see how much WH and AH it takes before amps taper to 0.5% at Vabs.
Plenty of space in the casing of the Powermax to install the display in a rectangular hole you cut with a dremel and cut off wheel, with lid removed, and while you are in there get rid of the 270 degree potentiometer and install a Bourn's 10 turn potentiometer of the correct value. Makes fine tuning voltage to the 0.01v so much easier than the provided potentiometer.
