i will check for you

there are 4 loops or half loops as you say near the terminal posts or rather just above it, i didn't however look to see what they did, but that make sense.

however

today my partner while testing again on a 24 volt battery bank, disconnect the battery output and the screen still read .5 amp output, :)

my parnter called to ask how this was happening,,, i told him not to stand between the mx60 and the battery bank,, he might get zapped.... lmao :)

i had him for about a second or two...

we both had a good laugh

late last night i went to the outback forum and found that those that install these things, don't pay much attention to the screen except for programming, they use their own test meters to establish what is actually happening.
evidentally those that install these things know that the reading reported  are a bit .. how should i say?  off?

also after doing much research on buck converters, it takes a very well engineered and specifically applied buck converter to get to 95% efficiency, so the reported 98% is likely something that is never going to be reality in the real world for any appreciable amount of time. which is ok by me i guess.

it would appear to me after doing some tests that perhaps one could see about 93% with the system (peak)if one was to input maybe 90 to 120 volts dc into a 48 volt battery bank, but even still i would expect the average to be around 90% in real world applications.

according to our tests ~ 85 to 88% for a 24 volt system being fed around 50 volts

and around 83% for a 12 volt system fed by 20 volts or so.

as opposed to the morningstar pwm controller fed with 17 volt panels into a 12 volt bank its efficiency hovers at 97 to 98 percent (actual), but it does not have a buck converter.

so if one is looking for the max efficiency it would appear that the morningstar has an advantage if, and only if the panels can be matched nominally to the batteries and are close enough to limit line losses.

at least this is what seems to be the reality so far