I have my Victron gel Deep Discharge battery bank setup to charge my DC battery bank through the Orion TR Smart 12/12 18 isolated DC-DC charger. The DC battery bank is made up of Lead/acid BK-M27MF batteries. The DC battery bank is connected to my alternators but not the Gel bank. The Gel bank charges the DC bank when the engines are not running. The current setting on the Orion TR Smart charger is set to power supply mode. What should the output voltage be set at? It is currently 13.2, but it is draining my Gel bank.
