Can/which dc to dc charger be used between a agm battery that is chargingwith a marine wind turbine with a dump load resister and charge a lithium battery bank?
depends on the absolute voltage limits of the batteries involved. Possibly only an automatic charge relay will be needed.
Please help ?
the Battery voltage charge point per battery bank can be set with in the permitters of the dc chargers?
the voltage threshold of the dump load resister for the agm set against the charging algorithm for lithium is my conundrum?
I believe the wind turbine act the same as engine alternator and wonder what will happen during a bms disconnect to a proper system ?
scenario 1: The lithium battery can accept the same voltage range as the AGM at the charged end (typ 14.4V), and can also accept the max current from the wind gen: In this case, as the dump load should stop any excursion over 14.4V, then a simple automatic charge relay can be used to connect the 2 batteries together. The relay will transfer charge from the wind gen to the lithium battery when the wind gen is running, and open when it is not. Should the BMS decide to stop charge for any reason the AGM will still soak up any surge and prevent voltage spikes.
If the Lithium battery cannot accept either the full voltage or the max current (which would lead to BMS disconnect), then a DC/DC converter will be needed.
So it depends on the voltage spec of the lithium battery, and the spec of the wind gen.
Thanks Mike