This 4-pack of rechargeable lithium D batteries delivers 1.5V output and 6000mWh capacity for reliable power in flashlights, floodlights, toys, and other compatible devices. Each battery can be recharged in about 2 hours using the included 4-in-1 USB-C charging cable, with no separate charger required. Built-in protection helps prevent overcharging and over-discharging for safer everyday use. LED indicators make charging status easy to monitor. The recyclable battery design also helps reduce disposable battery waste.