I have a 400 watt panel that I would like to use to charge a 24 V battery bank and a 12 V battery bank.
Is it possible for MPPT100/30 and 75/15 share the same panel and charge two separate battery banks?
one sub answer address a similar question;the answer from user 'wild-thing'. Seems like there is a competition,with 12V get fully charged or need to be charged before MPPT 75/15 turns-on.Since in my case the batteries are simultaneously used and hence it may not be practical.
Is there any other way to do this without the controllers competing with each other?
A dc-dc isolated charger may be another option but has efficiency issues ~87% compared to an MPPT charger