A reliable, well-specified 18650 cell for regulated mods and devices. The Sinowatt 25SP offers 2500mAh of capacity and a 20A continuous discharge rating in the most widely used vaping battery format — a solid, honest choice for vapers who need a spare or replacement cell and want something dependable from a reputable manufacturer.

About the Sinowatt 25SP 18650

The 18650 format is the standard cell in the majority of external-battery vape mods, and choosing a quality cell matters more than it might appear. Under-rated or cheaply manufactured cells can degrade faster, deliver inconsistent voltage, and in worst cases present safety risks. The Sinowatt 25SP is an accurately rated cell with performance that reflects its specifications in real-world use — the 2500mAh capacity is honest, and the 20A CDR keeps it stable across normal regulated mod wattages without strain.

The SP designation in the name refers to the Sinowatt performance designation — these are cells built for consistent output rather than peak discharge, making them particularly suitable for regulated mods running at typical daily wattages (15–80W is the range most vapers use). At 2500mAh the capacity is solid for a 20A cell, balancing discharge headroom with run time.

Always store 18650 cells in a proper plastic case when not in the device. Never carry loose cells in a pocket or bag alongside metal objects. Charge only with a quality external charger or in a regulated mod with built-in charging — do not attempt to charge damaged or dented cells.

Specifications

• Format: 18650

• Capacity: 2500mAh

• Continuous Discharge Rating (CDR): 20A

• Nominal voltage: 3.6V

• Manufacturer: Sinowatt

• Model: SW18650-25SP

• Flat top