Lithium Ion Battery - 18650 Cell (2600mAh) - PRT-12895 - SparkFun Electronics

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7.4V 2600mAh 2 Cell Lithium ion 18650 19.24Wh Rechange Battery Pack with 2 Pin MTA-100 Connectors (Battery and Charger Kit) : Electronics

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AES Spy Cameras 11.1V 2600mAh 3 Cell Lithium Ion 18650 28.86Wh Rechange Battery Pack with 2 Pin MTA-100 Connectors

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KBT 3.7V 2600mAh 18650 Rechargeable Battery, Button Top - 2pack – KBT- BATTERY

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Lithium Ion Battery Pack - 2.5Ah (USB) - PRT-14367 - SparkFun Electronics

18650 3.7 V Lithium-Ion Battery Rechargeable (Secondary) 3.5Ah

USE-18650-3500MAH