![Request for technical advice: 4.5V battery box, 12V conducting rail - LEGO Train Tech - Eurobricks Forums Request for technical advice: 4.5V battery box, 12V conducting rail - LEGO Train Tech - Eurobricks Forums](https://c1.staticflickr.com/1/877/41230648482_75d9648960.jpg)
Request for technical advice: 4.5V battery box, 12V conducting rail - LEGO Train Tech - Eurobricks Forums
![Train Battery Box Car with Switch and Red Wheels and Cargo Doors Pattern on Both Sides (Stickers) - Set 7720 (Undetermined Type) : Part x488c01pb03 | BrickLink Train Battery Box Car with Switch and Red Wheels and Cargo Doors Pattern on Both Sides (Stickers) - Set 7720 (Undetermined Type) : Part x488c01pb03 | BrickLink](https://img.bricklink.com/ItemImage/PL/x488c01pb03.png)
Train Battery Box Car with Switch and Red Wheels and Cargo Doors Pattern on Both Sides (Stickers) - Set 7720 (Undetermined Type) : Part x488c01pb03 | BrickLink
LEGO - 7722 Steam Cargo Battery Train Set from 1985. This set is still sealed. #vintagelegocollector #vintage #legosystem #legotownplan… | Instagram
![Brick-Shop - Technic 488 Electric Battery Car Roof 4.5V Blue (Set 7722) 427402 dark gray Parts 1/2 Pin short (4274) Electric Battery Box Train Power Functions Motor (8881) Engine Motor Lego (7897)Technic Brick-Shop - Technic 488 Electric Battery Car Roof 4.5V Blue (Set 7722) 427402 dark gray Parts 1/2 Pin short (4274) Electric Battery Box Train Power Functions Motor (8881) Engine Motor Lego (7897)Technic](https://www.brick-shop.de/images/product_images/info_images/7350_0.jpg)
Brick-Shop - Technic 488 Electric Battery Car Roof 4.5V Blue (Set 7722) 427402 dark gray Parts 1/2 Pin short (4274) Electric Battery Box Train Power Functions Motor (8881) Engine Motor Lego (7897)Technic
![Train Battery Box Car with Three Contact Holes, Black Switch Lever, Black Magnets, Black Wheels, and Light Gray Roof with 'DB 7722' Pattern on Both Sides (Stickers) - Set 7722 : Part 3443c01pb01 | BrickLink Train Battery Box Car with Three Contact Holes, Black Switch Lever, Black Magnets, Black Wheels, and Light Gray Roof with 'DB 7722' Pattern on Both Sides (Stickers) - Set 7722 : Part 3443c01pb01 | BrickLink](https://img.bricklink.com/ItemImage/PL/3443c01pb01.png)
Train Battery Box Car with Three Contact Holes, Black Switch Lever, Black Magnets, Black Wheels, and Light Gray Roof with 'DB 7722' Pattern on Both Sides (Stickers) - Set 7722 : Part 3443c01pb01 | BrickLink
LEGO - 7722 Steam Cargo Battery Train Set from 1985. This set is still sealed. #vintagelegocollector #vintage #legosystem #legotownplan… | Instagram
![Brick-Shop - Technic 488 Electric Battery Car Roof 4.5V Blue (Set 7722) 427402 dark gray Parts 1/2 Pin short (4274) Electric Battery Box Train Power Functions Motor (8881) Engine Motor Lego (7897)Technic Brick-Shop - Technic 488 Electric Battery Car Roof 4.5V Blue (Set 7722) 427402 dark gray Parts 1/2 Pin short (4274) Electric Battery Box Train Power Functions Motor (8881) Engine Motor Lego (7897)Technic](https://www.brick-shop.de/images/product_images/popup_images/7350_1.jpg)