ABENIC DC 5V 4800mAh Super Rechargeable Protable Li-ion Lithium Battery DC-05480 Blue - - Amazon.com
Polymer Li-Ion Pack with Fuel guage: 5V Regulated (27.01wh, 1A rate ) for 5V Mobile Electronic
18650 Li-ion 5V 2200mAh Battery Pack - Himax
Amazon.com: HXJNLDC DC 3.7V 5000mAh 755590 li-ion Lithium Ion Polymer Battery Replacement for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply : Electronics
Bulk-buy Factory Rechargeable Battery 3.7V 1800mAh 18650 5V Li-ion Battery with PCB and Wire Leads for Flashlight price comparison
Lithium Ion Battery Pack - 3.7V 6600mAh : ID 353 : $24.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Lithium Ion Polymer Battery - 3.7V 70mAh | TinyCircuits.com