Info Doc: Suntech Battery Life
Suntech Battery Life Model Battery Capacity (Ah) Battery Life at 1 ping/day Battery Life at 2 pings/day ST4280 17.0 7 yr 4 yr ST4230 12.0 3 yr 1.5 yr ST4290 8.0 3 yr 1.5 yr ST4290(L) 19.0 8 yr 4.25 yr ST4410(G) 2.8 7 mo 3 mo ST4915 57.0 15+ yr 7+ yr ...