Charge from Battery Bank without an Inverter to AC

[bsatt69]

Has anyone found a way to charge from a battery bank without using an inverter going to AC? I would think it possible with maybe using a 48V 100AH for a battery, but maybe need a different charger? Could this be done with a mppt controller? This would save cost, complexity and be more efficient. I don't know enough to try something, but it just seems inefficient to go from dc to ac back to dc.