Our conversion-focused e-bike lithium battery simplifies bicycle electrification while delivering superior customizable performance. Engineered as a core component for e-bike conversion kits, it transforms traditional bikes into powerful electric bicycles with minimal effort. Users can select 18650 or 21700 cylindrical cells to adjust energy density, cycle life, and budget requirements for personalized builds. The optimized triangular frame design ensures perfect frame integration, improving weight balance and aerodynamic efficiency for stable, comfortable rides. Voltage, capacity, and cell type are all fully configurable, ensuring universal compatibility with countless e-bike models and conversion systems. The broad 10Ah–30Ah capacity range supports all riding scenarios, including daily urban travel, long-distance touring, and rugged off-road exploration. Durable deep-cycle construction guarantees consistent power output under heavy usage and long-term operational reliability with reduced maintenance.