8878
8878 LEGO Power Functions Rechargeable Battery Box
Average price: $142.47
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Description
This rechargeable battery box eliminates the need for disposable batteries, featuring built-in Lithium polymer cells for a lightweight yet powerful design. Compatible with LEGO® Power Functions models, it includes a speed control dial for motor adjustment and delivers a 7.4 V output. Charging requires the #45517 10VDC LEGO Transformer.