wa8yxm wrote:
As for the size of the batteries. That is a function of total watts stored. (amp hours times volts)
Some numbers In all cases I'm talkin 12 volt battery packs
Group 24 about 75 AH
Group 27/29 just shy/over 100 AH
Group 31 About 120-130
GC-2 pairs (Two 6 volt) 220 Amp hours
So each six volt battery is between a 29 and a 31 in weight and total volume..
Plus they are a bit taller so you don't need to water as often
And yes 1 12 volt (likely a 29) to a pair of GC-2 gets you from about 20-25 usable amp; hours to 100-115 That's a SERIOUS upgrade.
Why does a 29 have 100 AH but only 20-25 usable (20 percent) and two GC-2s have 220 AH with 100-115 usable (50 percent)?
