Power Function Rechargeable Battery 8878 - General LEGO Discussion - Eurobricks Forums
LEGO has a mysterious new rechargeable battery, what can be the product? - RacingBrick
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New Rechargeable Battery Box 8878-1 54599 Remote Control Rc 8879 8884 8885 Fit For High-tech Moc Building Blocks Toys - Blocks - AliExpress
LEGO® Power Functions Rechargeable Battery Box 8878 | Other | Buy online at the Official LEGO® Shop US
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Build your LiPo rechargeable battery for Control+ and Powered Up hubs. - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
BrickLink - Part 87513c02 : LEGO Electric 9V Battery Box Power Functions (Non-Rechargeable) with Red Bottom [Electric, Battery Box] - BrickLink Reference Catalog