How Long To Trickle Charge A Deep Cycle Battery. Chargers built for automotive batteries only should not be used for deep cycle. Here are some tips on how to charge it and maintain it too.

Bulk Charge Voltage is the voltage at which the batteries will receive most of the charging. If you are not using a smart charger to charge your 12V deep cycle batteries the charging current should be at least 10 of the amp hour rating for a flooded lead acid battery or up to 30 for an AGM lead acid battery. 125 volts 70.
I have written another article about charging a deep cycle battery.
You can trickle charge 138V 1 AMP max typically deep cycle batteries but as stated it will take some time. Is It Okay To Use A Trickle Charger. If the Ah of the battery is 60 and the battery voltage is 6 V. The charger has a flashing green light to indicate a greater than 80 charge and a solid green light to indicate full charge.
