Hotline: 16297 (9 AM to 8 PM) 
Hello, Sign in 
Cart 
Defender OSK-118 provides airflow during power outages with a 12V 4Ah internal battery. Large 18-inch blades cover wide floor areas in residential or office spaces. Dual AC/DC modes keep the motor running through frequent load shedding.
Key Features
- 9-Speed Variable Control: Selection of nine distinct motor RPM levels. Balances immediate cooling needs against total battery discharge time.
- 12V 4Ah Rechargeable Battery: Sealed lead-acid cell providing 2.5 to 10 hours backup. Keeps air moving through extended periods without grid power.
- 18-Inch Blade Diameter: Five-blade configuration built from high-grade ABS plastic. Displaces enough air volume to cool medium-sized rooms effectively.
- Integrated 12-LED Array: Built-in light source drawing minimal power from the main battery. Provides emergency visibility when the main lights fail.
- 6 Months Warranty: Manufacturer coverage for internal mechanical and electrical components. Protects against early hardware failure under normal use.
Frequently Asked Questions
How long does Defender 18 inch fan battery last?
At the lowest speed, the 4Ah battery lasts up to 10 hours. High-speed operation depletes the charge in approximately 2.5 hours.
Can I use the fan while it is charging?
Dual AC/DC circuitry enables simultaneous operation and battery charging. The fan continues running without interruption when the power returns.
