Flashlight Features The Big D was designed with two things in mind: heavy duty and light weight. There are two systems available: NiMH and SLA (Lead Acid), both with 110V transformer. Vehicle installation is also possible with 12V plug-in adapter or direct wiring. The charging base (available in Fast or Trickle Charger versions) can be attached to a wall and the quick release design allows you to remove the Big D with one hand. Tested to National Fire Protection Association (NFPA) 1901-26 Crew Area Shock Test. | Light Source | Tested Lumen Value | Tested Lux Value (@ 1 meter) | Xenon (Primary) Xenon (Back-up) | 600.0 | 37,000 | | Batteries | Battery Burn Time | Battery Pack/ Charging Time | 6 D NiMH (Included) | 1.5 hrs. (Primary) 2.5 hrs. (Back-up) | NiMH Battery Pack 5-6 hrs. (Fast Charger) 12-15 hrs. (Trickle Charger) | | Watts | Voltage | Length | 24 (Primary) 11 (Back-up) | 7.2 | 9.5" (24.1 cm) | | Weight w/Batteries | Weight w/o Batteries | | | 56.1 oz. (1.59 kg) | 25.8 oz. (0.73 kg) | | | | | Big Ed™ Rechargeable 3850 NiMH Approvals  | | Listed 4S67/E184884 Class I, Div. 2 Grp. A,B,C,D, T2B | |