Li i pseudo-equivalent widths (pEWs) of late-M, L, and T dwarfs. Data taken from Tinney (1998), Kirkpatrick et al. (1999, 2000, 2008), Pavlenko et al. (2007a), Cruz et al. (2009), and Zapatero Osorio et al. (2014) are shown with black dots (detections) and arrows (upper limits). Our pEWs of Luhman 16A (L6.75) and Luhman 16B (T0) are indicated with red dots, and the measurements of Faherty et al. (2014) are plotted as blue solid triangles. Values from Faherty et al. (2014) for Luhman 16A are slightly shifted in spectral type and pEW by +0.1 subtype and +0.1 Å, respectively, for clarity.