Genset and RS 48-6000 Smart Solar - can I include a Multiplus II into an off-grid system?

The current infra is the folowing: Off-grid, 3 x RS 48-6000 Smart Solar, RS450/100, BYD battery.
Up to day, to load the batteries without sun, we have been using following chain: Geneset AC → Rectifier (diode bridge + filtering) → RS 450/100 → BYD battery chain. The filtering is good, but the efficiency is poor. I would like to know if it is possible to include a Multiplus II used only as a charger?

@Yaute

Maybe use the following chain:

AC gen → tel co 48V PSU → battery

Common Passes are Eltek Flatpack2 or Huawei.

You get a 2-3kW Eltek Flatpack2 for 159
EUR at eBay. They can be programmed up
to 56V and limited in DC current. They are very efficient.

Thanks, but I’m looking for a charger connected to the battery’s CAN bus.