The RAMFAN EX50Li is the only battery-powered PPV fan available with hot swappable IP66 rated battery packs, to protect against the inevitable sweep of the fire hose. The ability to have extra battery packs and onboard charger removes the limitations of other traditional fans, leading to a very quick and efficient usage of the fan at the fire ground. 40V Lithium Ion Battery Packs. PPV battery fans require batteries with greater density of energy storage. The battery management system (BMS) is the central element for monitoring and controlling energy storage systems. The 432 Wh Lithium Ion battery system allows for cordless operation and it was designed specifically for the high draw and sustained run-time applications demanded of PPV fans.     Specifications: Model EX50Li Order #EL5500-2PK Includes RAMFAN EX50Li 115 VAC (1), 40V 6Ah battery packs (2) and carrying strap (1). NSN (Nato Stock Number) 4140-01-667-0430 Motor 0.8 Hp / 0.6 kW Runtime @ Max. Speed DC: 90 minutes (four battery packs) DC: 45 minutes (two battery packs) DC: 23 minutes (one battery pack) AC: Unlimited Battery System 40V Lithium-ion, 432Wh, 12Ah IP Rating (Motor/Battery System/ Controller) IP66 / IP66 / IP66 Dimensions (h x w x d) 22" x 21" x 12" in / 56 x 53 x 30 cm Weight with two batteries: 54 Ibs / 25 kg with one battery: 50 lbs / 23 kg without batteries: 45 lbs / 20 kg Approvals CE AMCA AMCA Verified Airflow AC Power Supply 9,635 cfm (16,370 m3/hr) DC Power Supply 10,120 cfm (17,194 m3/hr)   System includes: (or may be individually ordered) 1 ea EL5500 - AC-DC Variable Speed Blower, 85-260 VAC, 40 VDC, 18 inch, Plug 5-15P, NO BATT 2 ea R2-360-AH-U - Battery Pack, 40v 6Ah for EX50Li