I have a system with
3 x MultiPlus-II 48V, one for each grid-phase
SmartSolar charge controllers
Lynx Smart BMS
and 2 x Lithium Battery Smart 25,6V that I'm going to attach in serial to obtain 48V.
Now I only need to pre-charge the Lithium batteries before I can start the system. The question is how?
One option would be to disassemble the setup and run the SmartBMS and SmartSolar in 24V mode and pre-charge the batteries one by one and then reassemble everything into a 48V system again. I'm not too found of that because it took some quite some time to build the system and I'm a little bit concerned about reprogramming devices from 24V to 48V. Also, it may work initially to run some parts in 24V mode but suppose that I later on will add more batteries to a running system.
However, I do have an older SmartSolar charge controller, MPPT 75/15. The question is if the SmartSolar charge controller is Smart enough to pre-charge the Smart Battery 25,6V without the Smart BMS.