Amazon.com: Blomiky 2 Pack 3.7V 600mAh Lithium Rechargeable Battery and 2 USB Charger Cable Compatible with Fisca Remote Control Robot Dog K9 Battery 2 : Toys & Games
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Amazon.com: Fisca Rechargeable 3.7V 600mAh Lithium Ion Spare Battery with USB Charger, SM 2P Connector for RC Robot and Robotic Dog : Toys & Games
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