The B28-M275/550/825/1100 from Ibeos is a Satellite Battery with Mass 2000 / 4000 / 6000 / 8000 gms, Capacity 275 / 550 / 825 / 1100 Whr, Charge Current 10 / 20 / 30 / 40 A, Discharge Current 20 / 40 / 60 / 80 A, Voltage Range 24 to 33.6 V. More details for B28-M275/550/825/1100 can be seen below.