Costco GC2 spec
I decided to replace the old GC2 batteries (4 years old). Costco's GC2's are now labeled Interstate Batteries. There isn't much data on the battery, just RC = 107. A "real" Interstate battery that ...
Forum Discussion
Getting Lead acid batteries to 100% charged is always going to take time, even at 14.8v. No getting around this.
When the charging source says "No more 14.8v for you" and rolls back voltage to some lawyerly approved level, is where many of us draw a line.
With 4 gc-2, and if you generator can handle it, i would recommend a 100 amp powermax, the adjustable voltage version, which will seek and hold your chosen voltage for as long as you decide to run the generator.
http://www.bestconverter.com/Specialty-Converters_c_230.html
While not shown, they do offer a 100 and 120 amp version of the adjustable voltage models. Make sure you make it clear you will want the adjustable voltage model and you will Be testing output amperage into a massive bank of depleted batteries and will throw a hissy fit if it does not make the listed amperage.
Do note they are not automatic.
If one still wants some level of autonomy then the PD- 14.8v series can be functional too, but not upto 100 or 120 amps.
http://www.bestconverter.com/9200-148-Volt-Deck-Mount_c_227.html
I use a 40 amp adjustable voltage Meanwell powersupply with external potentiometer and additional heat removal added, and my sinble group 27 agm battery does get to a true 100% in basically as little time as possible, whenever I run it.
When the charging source says "No more 14.8v for you" and rolls back voltage to some lawyerly approved level, is where many of us draw a line.
With 4 gc-2, and if you generator can handle it, i would recommend a 100 amp powermax, the adjustable voltage version, which will seek and hold your chosen voltage for as long as you decide to run the generator.
http://www.bestconverter.com/Specialty-Converters_c_230.html
While not shown, they do offer a 100 and 120 amp version of the adjustable voltage models. Make sure you make it clear you will want the adjustable voltage model and you will Be testing output amperage into a massive bank of depleted batteries and will throw a hissy fit if it does not make the listed amperage.
Do note they are not automatic.
If one still wants some level of autonomy then the PD- 14.8v series can be functional too, but not upto 100 or 120 amps.
http://www.bestconverter.com/9200-148-Volt-Deck-Mount_c_227.html
I use a 40 amp adjustable voltage Meanwell powersupply with external potentiometer and additional heat removal added, and my sinble group 27 agm battery does get to a true 100% in basically as little time as possible, whenever I run it.
