The Battery Charger with OLED Electrical is a device designed to charge a variety of battery types, including lithium-ion, nickel-cadmium, and lead-acid. It features a built-in OLED display that shows charging status, battery type, and other important information. The device also features a built-in temperature sensor that prevents overcharging and other potential hazards. It is powered by a USB port and can be used to charge a variety of devices, including cell phones, digital cameras, and tablets. The Battery Charger with OLED Electrical is a convenient and reliable way to keep your devices powered up and ready to go.