Greetings,
I am thinking of having some solar panels going to a Victron MPPT 75/10 or/15 to two 12V 200A lifePo4 Victron batteries, at 24V.
I would like to incorporate the starting AGM battery to this system.
Can I connect the AGM to the MPPT controller so when the AGM is charged by the alternator the MPPT would see it as a charging device (like solar) and feed the 24V lifo, preventing the alternator from frying-up if I was connecting it directly to the lifo?
Thanks
a.
You do not state what voltage your starter battery or alternator run at.
Regardless of this, I would not connect the alternator to the MPPT input.
What you need between the starter AGM battery and the Lithium batteries is a DC to DC charger, look up the Victron Orion range. If you have a 12V starter then you will need a 12/24V unit otherwise a 24/24V unit.
You will also need a BMS if you are using the Smart batteries but not for the SuperPack ones.
Hello
pwfarnell ,
Thank you for the answer. Yes the original design is with a 12/24 dc2dc charger. I might stick with that configuration. It seems to be a shame not to use the MPPT unit for more than just a solar array.
Cheers,
a.
