Securaplane has grouped its lithium-ion battery technology under the “System Lithium” brand. Typically, such batteries weigh about half the weight of a traditional sealed lead-acid or nickel-cadmium battery, and in a large aircraft can save up to 200 pounds. Rather than being a single, sealed unit, the company’s lithium-iron phosphate batteries typically comprise clusters of low-power, smartphone-style cells packaged in a unit with advanced electronic cell management and health monitoring, with each cell surrounded by several layers of short-circuit protection.