BTW I tried charging (1) 7A Batt. w/ the 15.95v of 29 in series and paralleled 4 times and noticed the voltage increase .05v/sec until the battery reached 13.45v then over a resting period of 24hrs it had dropped to 12.52v which is where it started, and stayed as if that is the batteries capacity? Was 2hrs not long enough to charge it? They come 2/3 charged..... I figured that there would be some drop off however that seems rather dramatic to me but like I said I am new to solar charging.