3.7v 2200mAh Capacity Rechargeable 18650 Battery [CCS-5004] - $10.00 : Canada Cable Shop -- Cable Link, All You Need For Electronic, Mobile and Computer Accessories
Redilast Protected 18650 (2600mAh and 2900mAh) Mini-Review: RUNTIMES | Candle Power Flashlight Forum
Sanyo 18650 Lithium Ion cells, 2000-2200mAh Rated – Higher Wire Inc.