Power your low-drain electronics and experimental hobby hardware reliably with the New Leader 9V Heavy Duty Zinc-Carbon Battery. Purpose-built to function as a highly cost-effective, everyday power solution, this standalone 9V square cell block is an excellent choice for domestic smoke detectors, digital multimeters, guitar pedals, wireless toy controllers, and custom educational robotics kits. Utilizing a traditional zinc-carbon formulation, it provides steady electrical performance and reliable discharge tracks for devices that do not demand massive, high-amperage current spikes.