Join Date: Jan 2003
Location: Maine Coast
Thanked 219 Times in 167 Posts
Rep Power: 16
Re: Battery life short? What to check?
#1 The max charging voltage for a GEL battery should be 14.1V
#2 The Optima should be charged at a higher voltage
#3 Either one bank is getting over charged or one is getting under charged
#4 If on a mooring how are the batteries getting back to 100% state of charge?
#5 What parasitic loads do you have on your system, even with the battery switch off?
#6 How deeply are you cycling/discharging the bank when you use it?
#7 How are they charged? Alternator? Wind? Solar? At a dock?
#8 How are you monitoring your state of charge?
#9 How are they wired?
#10 What are the charge sources as in brand, model amperage etc...
#11 What are the charging voltages at the battery terminals when charging?
#12 Does the system use a diode battery isolator?
-Maine Sail / CS-36T
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Last edited by Maine Sail; 03-10-2013 at 08:50 AM.