​​​​​​​​​​​​​​3 Month Return To Base Warranty

Genuine Panasonic NCR18650B 3400mAh batteries.  Absolutely the biggest mAh capacity you can get in an 18650.  They can't handle the current that some of the other batteries can but as long as you're not running lots of current these will last a long time.  They're happiest at 1-2A each although they can handle spikes up to about 6A.

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Features & Specs

•  Max Continuous Discharge Current: 6.8A
• Typical Capacity: 3400 mAh
• Nominal Capacity:  3350mAh
• Style:  Flat top
• Dimensions: 65.1mm (L) x 18.3mm (D) 
• Weight: 47g
• Nominal Voltage: 3.6V
• Full Charge Voltage: 4.2V
• Protected/Unprotected:  Unprotected
• Origin:  Japan
• Button Top:  Yes