I have 2-6 volt Trojan Batteries, never had any problems charging, but we went on an extended boon docking of 9 days and the batteries were discharged to around 68%. ( I have a
TriMetric Battery Monitor). This is the lowest that I have ever discharged the battery. I have had the shore power plugged in since Sunday and the battery only shows 89% last night. Is this normal for it to take this long? Short weekends we discharge the battery down to somewhere around 90% and it does not take long to charge at all.