To have the battery filled you would have to take it to a local motorist and they should be able to fill it for you.
Motobatt Battery For Suzuki TS 250 L 1974
6N4B-2A Atom Motorcycle Battery for Suzuki TS 125 71-97
Battery For Suzuki TS 100 ERN 1979 - ACID NOT INCLUDED
6N4-2A Atom AGM Motorcycle Battery 6V for Suzuki TS 185 1973-1981
25-1383 - All Balls Wheel Bearing Kit For Suzuki TS 125 1975-1977 Rear
Twin Air Filter Foam For Suzuki TS 250 ER T 1980