Older Gulfstream jets can now use modern lithium batteries

US aviation regulators have created new safety rules for installing modern lithium batteries in older Gulfstream G-IV and G-V series airplanes. This means these planes can now upgrade from older, heavier battery technology to lighter, more powerful lithium systems.

For years, the type of batteries used in most aircraft (nickel-cadmium) were the only ones with clear safety standards. This meant that even as lithium battery technology improved, it was difficult to get approval for their use in existing aircraft designs. These new rules mean that a specific class of older business jets can now adopt a technology that has been standard in other applications for a decade, potentially improving performance and reducing maintenance.