guest Education Compatible with Lego MOC Power Technology Division App Programming Blocks PF Motor Motor Assembled Toy

In the link, in addition to the rechargeable lithium battery, other remote controls and battery boxes should be purchased by the user before use and the battery box should be opened with a small manual screwdriver to load the battery in the correct direction. When not in use for a long time, please take out the battery and place it properly to avoid damaging the product due to battery leakage.