** This brand requires that all warranty claims be handled with them directly.** The Vessel Craftsman - Blackwood / Slate 510 Thread Battery is a high-quality, stylish vape pen battery made from real blackwood and anodized aluminum. It features a protected cartridge drop-in design, making it easy to insert and remove cartridges. The battery is powered by a 300mAh lithium-ion rechargeable battery core and has four power/voltage settings (2.4V, 2.8V, 3.2V, 3.6V) to customize your vaping experience. The battery also has a 3-LED indicator to show the battery life and power settings. It is compatible with most 510 thread cartridges.