The Fifty Bar 20K is a rechargeable high-capacity disposable assembled in the United States and filled with American-made e-liquid according to the brand. Its platform combines an 18mL sealed reservoir, dual parallel mesh heating, adjustable airflow and a battery and e-liquid status display.
The nicotine Black Series uses 5% or 50mg/mL salt nicotine and focuses on dessert and tobacco-inspired flavors. A separate Fifty Bar 20K Nixodine version is also sold by some suppliers. Nixodine 50 is a supplier-labeled non-nicotine formulation and must not be described as 50mg/mL nicotine.
Always Active Boost Mode and the manufacturer’s anti-burn technology are designed to maintain output across the device’s usable life. These are brand performance terms rather than guarantees that dry or burnt draws can never occur.
Key Features
- Up to 20,000 estimated puffs
- 18mL prefilled e-liquid capacity
- 5% / 50mg salt nicotine Black Series version
- Separate Nixodine 50 non-nicotine version
- 800mAh commonly listed standard and Nixodine battery
- Upgraded 900mAh battery listed for the current Black Series
- USB Type-C charging
- Dual parallel mesh coil
- Always Active Boost Mode
- Manufacturer-labeled anti-burn technology
- Adjustable airflow
- Battery and e-liquid indicators
- Draw-activated operation
- Assembled in the USA
- Closed, non-refillable construction
Nicotine vs. Nixodine Formulations
- The 5% nicotine version and Nixodine version should use separate product variations or separate listings.
- Do not label Nixodine 50 as 50mg/mL nicotine.
- Use the nicotine addiction warning only for the nicotine formulation.
- Use a separate habit-forming and safety-uncertainty warning for Nixodine.
- Do not market either version as healthy, harmless or a smoking-cessation product.
Black Series Flavor Options
- Milky Loops
- Gold Tobacco
- Blueberry Cereal Donut Milk
- Vanilla Custard
- Strawberry Cereal Donut Milk
- Cinnamon Funnel Cake
- Raspberry Jam
- Butterbean
- Blueberry Yogurt
- Kentucky Tobacco
- Strawberry Super Strudel

















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