How big are the Fenix 18650 batteries?Updated 2 years ago
The dimensions of the standard ARB-L18 series 18650 batteries (ARB-L18-2600, ARB-L18-2900, and ARB-L18-3500) are 18.6mm x 69mm (.7" x 2.7")
The dimensions of the USB rechargeable ARB-L18 "U" series 18650 batteries (ARB-L18-2600U and ARB-L18-2900U) are 18.6mm x 70mm (.7" x 2.8")
The dimensions of the Cold Resistant ARB-L18-2900L 18650 battery is 18.3mm x 68.8mm (.72" x 2.7")
Learn more about 18650 batteries.