The problem was 6 hours (5pm to 11pm) on the one 3 amp ceiling light cost 18AH. Too much.
I could just get another one like the first and be sure to keep it off when charging at 14.x. Solar is a problem but could swap controllers with the MH. the MH one has adjustable voltage so could keep it under 14 or just turn off solar at 5pm when it is near dusk now anyway. (has a switch on the array side)
One of these Kohrees would be the real answer if I can get the voltage range info of the one to order. Did I miss where it gives the voltage range?
