If you're packing light and don't want to take your battery charger, grab one of these and charge it from your USB-C. Bear in mind it's slightly longer than a standard 18650 so please check your device before ordering. 

Manufacturer's Description:

The Nitecore NL1836R is an updated 18650 battery with an integrated USB-C charging port and an improved capacity of 3600mAh. The battery is self-contained, eliminating the need for a separate charger as a USB-C cable can be plugged directly into the cell itself (sold separately).

The battery has a built-in power indicator which activates when it is being charged. The light is red when charging and turns green once the battery is fully charged.

The NL1836R has a range of safety features. Internally the battery features a pressure relief valve which activates if the temperature rapidly increases and a built-in intelligent protective circuit to protect against overcharge, over discharge and short-circuiting. Externally, the battery is equipped at both ends with a nickel plated stainless steel protector which ensures high impact resistance, good electrical conductivity and oxidation resistance.

Due to the length of the battery it is incompatible with the following Nitecore lights: HC30, HC33, UT32, LR12, MH23, EC23, P18, T20, LR30, TM06S, TM28, TM39 Lite.

18 month manufacturer's warranty - see website for details. 

Technical Summary: