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20pcs/lot 10v 700ma 0.7a Power Supply For Lego Mindstorms Ev3 Nxt 45517 Robot Ac Dc Adapter Lithium-ion Batteries Charger - Pc Hardware Cables & Adapters - AliExpress
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LEGO Set 9693-1 Rechargeable Battery for Lego Mindstorms NXT, DC plug (2010 Mindstorms > NXT) | Rebrickable - Build with LEGO
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