【LED Indicator Management】During charging, the green LED light will flash, and after full charge, the LED light will remain on.
【Rechargeable Lithium D Battery】Lithium d cell rechargeable batteries are mercury, cadmium, and lead-free, saving thousands of alkaline batteries and reducing landfill waste.
【Rechargeable D Batteries with USB Connectivity】No external charger or adapter necessary; recharge fully in just 2 hours using a 4 in 1 USB cable. Simply connect to any USB port for convenient charging.
【Multiple Safety Protections】Built-in integrated safety circuit to prevent d batteries rechargeable over-discharge/over-charge, automatically stops charging when the battery is full, compliant with CE, ROSH, 2006/66/EC testing.
【4 Pack Rechargeable D-Type Batteries】Rechargeable USB D-type lithium batteries, can be reused over 1000 times, saving you a significant amount compared to disposable d batteries.