The Nitecore LR40 is a retro-style camping lantern. It can be set up or hung. The internal 4000mAh Li-Ion battery is charged via a USB-C port, and the battery can also be used as a power bank through a USB-A port. The Nitecore LR40 features both white and warm white light, and the two light colors can be mixed. The brightness is continuously adjustable. A battery level indicator shows the current charge status of the LR40. The maximum brightness of the Nitecore LR40 is 100 lumens.

Performance and runtime (warm white):
Min (15 lumens) for approximately 45 hours
Max (80 lumens) for approximately 15 hours

Performance and runtime (white):
Min (15 lumens) for approximately 38 hours
Max (50 lumens) for approximately 10 hours

Performance and runtime (MIX):
Min (10 lumens) for approximately 65 hours
Max (100 lumens) for approximately 8 hours.