Dionic batteries are the perfect selection for the videographer with weight as the highest priority in selecting a battery.
Dionic HC weighs only 1.8 lbs (800 grams) and is the highest capacity lithium ion battery which can be legally transported without restriction under the IATA and DOT safety regulations.

Digital DIONIC HC Li-ion-Battery, 14,4 V        -    12 - 16.8VDC (operating)                                                                                                              

Dimensions: 4.06 x 5.46 x 2.34" (10.3 x 13.87 x 5.94 cm)
Weight: 1.8 lbs (800g)
Capacity: 91 Watt Hours Peak (83 Wh Typical)