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Lithium Ion Battery Pack - 3.7V 6600mAh : ID 353 : $24.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: Coast FL Lithium Polymer Rechargeable Battery Pack for FL60R, FL75R & FL85R LED Headlamps,Black,Small,21532 : Sports & Outdoors
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Amazon.com: EEMB Lithium Polymer Battery 3.7V 820mAh 653042 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase : Health & Household
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