This charger is suitable for 36V lead-acid batteries!
A LED light indicates the charging status known. Red = charge / green = loaded
A rule of thumb for calculating the charging time is determined by the battery capacity and the charging current.
For example, in a completely depleted battery with 12Ah capacity and a charger with 1.6A
Charging current, this results in approximately:
12Ah / 1.6A = 7.5 hours charging time with 1.6A charger
Thus, the battery is to max. fully charged 8h and the charger can be removed.
Of course, the charging time is reduced accordingly depending on the charge output level of the battery.