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LEGO® Power Functions Rechargeable Battery Box 8878 | UNKNOWN | Buy online at the Official LEGO® Shop US
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How to Connect SMALL 9V Battery for Power Functions - LEGO Technic, Model Team and Scale Modeling - Eurobricks Forums
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Power Functions ADAPTER for 9V Battery Use - LEGO Technic, Model Team and Scale Modeling - Eurobricks Forums
![technic - Does the LEGO "Power Functions Extension Wire" (8886) work in both directions between old 9V and new Power Functions devices? - Bricks technic - Does the LEGO "Power Functions Extension Wire" (8886) work in both directions between old 9V and new Power Functions devices? - Bricks](https://i.stack.imgur.com/7wUXGm.jpg)
technic - Does the LEGO "Power Functions Extension Wire" (8886) work in both directions between old 9V and new Power Functions devices? - Bricks
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9V Battery Clip Converter Snap Connector 2.1mm * 5.5mm Female Plug for Guitar Effect One Spot Power Supply - Walmart.com
![Power Functions ADAPTER for 9V Battery Use - LEGO Technic, Model Team and Scale Modeling - Eurobricks Forums Power Functions ADAPTER for 9V Battery Use - LEGO Technic, Model Team and Scale Modeling - Eurobricks Forums](http://www.bricklink.com/PL/60656.jpg?0)