This 12V replacement battery kit will come fully assembled and fully charged. This upgraded 15 amp version provides a 25% percent longer ride time than the 12Ah replacement Peg Perego battery and 85% more ride time compared to the original 8Ah battery. It can be used in all 12 volt ride-on-toy applications licensed by Peg Perego including the John Deere tractor, Case IH Magnum tractor, Gaucho, and Gator. Original & replacement batteries may be identified as follows: CF12V12-T, IAKB0501, IAKB0502, DJW12-12HD, DMU 12-12, 2606FR, NP12-12. The 15Ah is NOT a direct replacement for the 7, 8, or 9Ah batteries, only the 12Ah.