another deep cycle Battery question

Submitted: Thursday, May 24, 2012 at 12:37
ThreadID: 95769 Views:2184 Replies:2 FollowUps:0
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my solar system is 180 watts, 2x 105 ah Batteries. 6 months old
it usually floats on 14 .2 volts.
accidently left fridge on 12 volts for 3 /4 days,only realised when water through fridge.
system will only charge to 3.7 volts then float.
van has a projecta charger installed to charge when on 240 volts
have tried another charger on batteries (projecta 8 amp)
still only getting 13.7 floatcharge

Is it possible to get batteries back to 14.2 float?
Barry Perth
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