but here they are

input voltage       mx60 indicated     meter one       meter two
.                          60.0               60.0            60.0

input current            3.9                 3.9             3.9

output voltage        13.2                13.2           13.2

output amperage     * 6.9 *                 5.7            5.7

as you can see the two external test meters agree with outbacks screen on input and output voltage and input current,, but disagree significantly on output current.

when we called outback we were told they compute the output current and do not actually measure it!  so... how do you get accurate efficiency computations if you compute one of the variables and it is so far off of reality?

this is why i would like to see someone else check their output current externally and compare it with the screen indicated current.

volvo farmer:

yes i am aware that they can be had for about 450, but even at that level
i want to see better efficiencies (actual) not calculated based on some fuzzy math.

yes these are being tested on a solar array, we tested them with various panels of various wattage input and from 30 volts input to 80 volts input,, and got very near the same results in efficiency with actual readings. and coincidentally the screen still computed mid to high 90 efficiency, which is apparently a flawed result.

thank you both

anyone got one they can test the output on?