I am using since a while LifePO4 batteries on my boat.
Each battery features an active BMS + balancing.
The starter battery is a 20Ah (CCA of 400A for 5s), while the service battery is an 80Ah battery.
Between them there is a Septor 1275 which allows for charging more than one battery.
The starter battery is connected to the alternator (Hitachi 80A on an Yanmar 3YM20 engine).
For regatta, all fine. For cruising (10hr +), the service battery does not get completely charged when motoring.
I was planning to fit in an Orion-Tr-Smart charger between the alternator and the rest of the circuit (starter battery followed by the Septor 1275 followed by the service battery).
Any drawback in doing so? why is this case not covered by the reference schematic considered?
I understand the Orion is a B2B, but what is actually the diff compared to an A2B in this case?
Any feedback, suggestion, welcome.