The ProFoto Car Charger 1.8A for B1 500 AirTTL from Lightbulb Rentals charges the B1's Lithium-ion battery from a car's 12V (cigarette lighter) accessory outlet in just 2 hours.
Anton/Bauer Cine VCLX Charger$100/day
IndiePRO Micro 26V (4) Battery Kit w/ Quad Charger$230/day
Tilta Portable Charging Station: Lid$10/day
Quad Charger: Core SWX Fleet, Gold Mount$30/day
Anton Bauer Gold Mount Plate$5/day
Nikon EN-EL15 Battery$15/day
Sony NP-F750/F770 Battery (L-Series, Medium)$15/day
Core SWX NANOX G98 Micro 98Wh Li-Ion Battery (Gold Mount)$20/day