The Big Thomas' battery has been replaced, but it doesn't move. [There are no small round coal balls.] ◉ There are 4 moving trains: ⚪︎ Thomas the Tank Engine: Uses 1 AA battery. You can replace the battery by removing the top cover by hand. ⚪︎ Chuggington: Uses 1 AA battery. Open the screw on the underside with a Phillips screwdriver. ⚪︎ Shinkansen (Bullet Train): Uses 1 AA battery. Open the screw on the underside with a Phillips screwdriver. ⚪︎ SL Steam Locomotive: No coupling hook. Uses 1 D battery. Open one screw on the underside with a Phillips screwdriver. Thomas Field has some tears in the paper parts. Please check the photos. It can be played with without any problems. Additionally, about 15 other Plarail trains that do not move on their own are included as a bonus. Accessories include tunnels, stations, and railroad crossings. Enjoy creating a town! ^_^ Thomas and a diverse rail set. Great deal! First come, first served. Perfect for children who are playing with Thomas for the first time. I think it's a satisfying amount to play with overall. ^_^ If you would like to purchase individual items, or are looking for a discount, please leave a comment. - Item Name: Plarail Thomas Series - Rail Color: Blue - Set Contents: Thomas, rails, scenery parts - Thomas Design: Smiling Thomas - Thomas Size: Approximately 15cm - Vehicle Types: Multiple vehicles (including Thomas) Thank you for viewing.