RAM FAN's long-life Battery Pak now with infinitely high-low control. Pulse width modulation extends battery life up to 10 hours in low setting yet gives a full 2.5 hours on high. Can be used with vehicle battery with the optional connector. The built-in charger allows you to fully recharge the battery in 12 hours.

Purge the area on high for 10 minutes, reduce to low speed (low-noise as well) and maintain fresh air for the whole work shift. Ideal for construction job sites to eliminate noisy gasoline-engine blowers.

Weight: 51 Lbs / 23 Kg