Here share someTips about battery charging with you , wish it can do helpful to you
1 :Question : How to charge the battery, till it charge full ?
Firstly the charge voltage of cycle solar use must be set between 14.4-14.9V, if lower than 14.4V, the battery can not be charged to full
Secondly the charge current, should use at least 0.1C, for example 100Ah, that is 10A to charge the battery, and the charge time must be 8-10 hours from empty to full at least
2 :Question : How to judge a battery is full ?
Charge the battery as our suggested way, then take away the charger, leave the battery alone, test its voltage
If over 13.3V, it means it almost full, please leave it alone for 1hour without using and charging, then test the battery voltage again, if still above 13V without decrease, that means the Battery is full and you can use it
If after leaving alone 1hour, the battery voltage fall quickly below 13V by itself, that means the battery is not charged fully yet, please continue to charge it until full
By the way, please never test the voltage during charging, because the data show when charging is not correct at all. They are virtual data
Many thanks your time wish these tips will do good to you