NOCO Genius G750 Manuel D'utilisation page 10

Step 8: Maintenance
Continuously monitors the battery to determine when
a maintenance charge should be initiated. If the battery
voltage falls below its target threshold, the charger will
restart the Maintenance cycle until voltage reaches its
optimal state and then discontinues the charge cycle. The
cycle between Optimization and Maintenance is repeated
indefinitely to keep the battery at full charge. The battery
charger can be safely left connected indefinitely without the
risk of overcharging.
Charging Times.
The estimated time to charge a battery is shown below. The
size of the battery (Ah) and its depth of discharge (DOD)
greatly affect its charging time. The charge time is based
on an average depth of discharge to a fully charged battery
and is for reference purposes only. Actual data may differ
due to battery conditions. The time to charge a normally
discharged battery is based on a 50% DOD.
Battery Size
Ah
8
12
18
24
30
Approx. Time to Charge In Hours
6V
5.3
8.0
12.0
16.0
20.0
12V
5.3
8.0
12.0
16.0
20.0