Lithium Ion Polymer Battery - 3.7v 500mAh : ID 1578 : $7.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Buy MAENT® 3.7V 1000 mah Actual capcity lipo Li ion Rechargeable Battery Lithium ion Polymer Cell for Bluetooth Science Project Toys MP3 GPS PSP Handheld Device - NOT for RC CAR OR
Rechargeable 7.4 Volt 2200mAh Lithium Polymer Battery For Heated Gloves Or Socks | saviorgloves.com