how long and how thick are your DC cables from MW to battery?
At 40 amps output from my meanwell there is a fair amount of voltage drop. I want the battery at 14.7, but setting the MW unloaded to 14.7 then hooking to depleted battery, well it takes a while for voltage to rise and when it does seem to top out, it stops at 14.4. Since i want 14.7 I teist my pot a bit more until batery voltage hits 14.7.
When amps start tapering, there is less voltage drop and the voltage will climb above 14.7.
Battery voltage needs to be read on battery terminals. Reading it on tyhe MW DC output will be higher when charging due to volatge drop. There is some stretchy copper when the amperage changes.
After the first usage there should be no drifting of voltage.
Set to 14.7v unloaded, then hook to battery terminals 29 amps will cause voltage drop, but as the battery fills voltage will climb to that 14.7v.
I twist mine past 14.7v when loaded heavy only to get mine to 14.7v at max amperage ASAP, but I have to backpedal as the amps taper and voltage drop is lessened.
15.2v for an hour is not instant death of AGMS. continue. Since you are in no rush set MW unloaded to 14.7, and it should never go above that. Voltage drop will slow potential charging, but if time is no matter, then don;t stress seeing 14.7v at battery terminals instantly.
