Book 14 of the Sabel Security series.
"When a renowned professor is found murdered, the prime suspect is a powerful Chinese executive, and the motive is a stolen equation capable of shifting global power: the Chaac Equation. The equation can produce batteries storing ten thousand times the kilowatt hours, powering airplanes, cars, and homes at a fraction of today’s cost. Tasked with recovering the equation, Jacob Stearne embarks on a deadly game of cat-and-mouse across continents, matching wits with the formidable Jackie Maura, a ruthless operative from the shadowy Remmo Nidal Corporation.