Aspire 18650 2900mAh Battery Aspire 18650 2900mAh battery is a 18650 battery used for powering vaping mods and other electrical devices. The Aspire 2900 is an INR 2900 mAh battery. Aspire 2900 batteries have been tested extensively and can handle some serious current for extended periods of time. Features: Size: 18650 (18mm diameter x 65mm long) Type: Li-ion INR (Rechargeable) Rated Capacity: 2900mAh Voltage: 3.7V Protected: No Style: Flat Top Rated storage temperature: 20-60 degrees Check out Aspire’s other impressive lineup of products here. Check out Aspire’s (manufacturers) for more details on the company.