Replacement battery fits 37 Vulcan compatible models. Specifications: 4000mAh, 14.8V, Li-Polymer. Compatible with: Enz K36N, Enz R34, Enz M15RX, Enz GB-15N36, Enz GB-15X36, Enz X36U and 31 more compatible models. Replaces: Enz 20160901, Byone 36539419s, Aierxuan K36. Vulcan replacement battery designed for Notebook/Laptop devices. Designed to match the original manufacturer’s performance.