Amazon.com: Fitinoch 3400mAh Rechargeable Button Top Battery (Li-Ion 3.7V) 4 Pack : Health & Household
Best 18650 Button Top Battery | Rechargeable 18650 Flashlight Batteries
Exell 1.2V 5000mAh NiMH C Size Rechargeable Button Top Battery for use with cameras, camcorders, Data Loggers, Portable Monitors, instruments/equipment, high power static applications
Xtar 14500 800mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Boxed
Panasonic NCR 18650B Protected Button Top Battery - Sixfab