There is no MeanWell rsp-320-15, there is only a rsp-320-12 and its maximum voltage is ~13.2v, making it useless as a top charger.
Also, it does not have constant current limiting on overload, so if the batteries were discharged enough to draw more than the Meanwell could provide, it would shut off until overload was removed, making it more useless for battery charging.
I have the Meanwell rsp-500-15, which does have constant current limiting on overload, and it will do 40 amps and the voltage range with an aftermarket 10 turns 1K ohm bourns potentiometer is 13.12v to 19.23v. The original potentiometer the range was 13.23 to 19.23v.
I modified it further than just the 10 turn potentiometer, It has extra ventilation and heatsinking, for extra longevity and reduced running of the meanwell provided 40mm fan, which is very loud.
With Ventilation and heatsinking improvements, at 75F, the loud fan does not switch on unless providing more than 34 amps. Without these additional Noctua fans and heatsinks, it would cycle on and off at just 6 amps.
