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Lithium Ion Battery Pack - 3.7V 4400mAh : ID 354 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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3.7v 4400mah 8c Lipo Battery For Graupner Mz-18 Mz-24 Model Aircraft Remote Controller Accumulator Akku - Parts & Accs - AliExpress
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