Getting ready for our 1st boondock weekend
I have 2 new Wally world marine "deep cycle" with about 80 amp hour reserve. I expect running a few lights, tv and a box fan for sleeping, I'll get them down to 12.0 to 12.2 volts overnight. I'd like...
Forum Discussion
Boy Dave,
I am not sure where to start here.
Your batteries are not "80 Amp hour reserve". They might be 80AH or they might be 80 minute reserve. In any case, the are good for about 40AH each except that they are in parallel. If they are both charged to full density (why you might want a refractometer or a hydrometer) but in parallel, it will be very difficult to get them back to full. They are also not Deep Cycle. The are marine "Mixed Use" and if they serve you well, then that is good.
Your WFCO converter is probably not a "smart" unit and if it peaks at 13.6 (you do need a meter - even a Hazard Fright will do) then it will take a day to recover your pair of Grp 27 marine batteries if they get to 12.0. If it does do a 14.4 bulk charge, it will still take 6~8 hours to get to 95%. That is just a fact of chemistry.
If you go out on Friday night and return Sunday afternoon, as long as what you need stays working, how much do you care?
Matt
I am not sure where to start here.
Your batteries are not "80 Amp hour reserve". They might be 80AH or they might be 80 minute reserve. In any case, the are good for about 40AH each except that they are in parallel. If they are both charged to full density (why you might want a refractometer or a hydrometer) but in parallel, it will be very difficult to get them back to full. They are also not Deep Cycle. The are marine "Mixed Use" and if they serve you well, then that is good.
Your WFCO converter is probably not a "smart" unit and if it peaks at 13.6 (you do need a meter - even a Hazard Fright will do) then it will take a day to recover your pair of Grp 27 marine batteries if they get to 12.0. If it does do a 14.4 bulk charge, it will still take 6~8 hours to get to 95%. That is just a fact of chemistry.
If you go out on Friday night and return Sunday afternoon, as long as what you need stays working, how much do you care?
Matt
