I am hoping someone can help me with some questions on the Victron DC to DC chargers and the suitability of Lithium batteries as a backup . I would like to buy a 100am LifePO4 and leave constantly on charge ready as a backup but need to confirm some aspects of the setup first.
What model Victron DC/DC do I need , I want to charge 24 volt lithium through a charger drawing power from my systems 24 volt Bus Bar , i cant see a 24-24 in the range but some say suitable for 24 volt
What is difference between isolated or non isolated
So many makes of batteries , other than Victron and Renology I haven't heard of any of them so how to know what batteries are good or not so good other than the reviews which I know from experience cant be trusted
Might be more convenient physical to use 2x12 volt batteries linked together in series than 1x24 volt , are there any disadvantages to doing it that way .
Can they be left connected permanently without damaging Lithium batteries or Charger
I contacted a company selling batteries on Amazon Spain called Power Queen EU to say I wanted to use one of their batteries as a backup so would get very little use and will go long periods with no use at all , I asked if their batteries can be left on a Victron DC to DC charger permanently so they will be always at 100% and ready for when they are needed , they said “ Normally, we suggest installing a switch between the MPPT and the battery; after the battery is fully charged “
Many thangs in advance to anyone who can assist