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Gomadic High Capacity Rechargeable External Battery Pack suitable for the Arduino UNO / SainSmart / Mega / R3 - Portable Charger with TipExchange Tech - Walmart.com
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USB Battery Pack for Raspberry Pi - 10000mAh - 2 x 5V outputs : ID 1566 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Uno R3 (Open-Source Clone of Arduino Uno R3), USB Cable, 9V snap Connector, and 8AA Battery Pack (Batteries not Included). | Pricepulse
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Small Footprint Arduino Nano With USB Charging Circuit (Li Ion or LIPO) That Can Turn Itself Off (soft Latch Power) : 8 Steps (with Pictures) - Instructables
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USB Battery Pack - 2200 mAh Capacity - 5V 1A Output : ID 1959 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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