Type-C USB Charging:USB Rechargeable C size battery has a built-in type C-USB port, which is convenient to be recharged from the PC, wall plug, or power bank through the included USB charging cable.Type C charging is more stable compare to Micro charging port Led Indicators Management:When charging, the green LED will blinks and will then LED remains on once it is fully charged Multiple Safe Protection:Built-in Integrated safety circuit protects Battery from over discharge/overcharge,when the battery is fully charged,Effectively Prevent Overcharge, Overcurrent, Over-voltage, Overheat, and Short Circuit Conditions Energy Saving & Eco Friendly:Mercury, cadmium and lead are not used in these C lithium small batteries, saving thousands of alkaline batteries and reducing a significant about of landfill waste CompatibilityPower up any device that uses standard C batteries, including flashlights, transmitters, , radio receivers, boomboxes, toys and other electronics for long lasting, dependable operation c battery rechargeable batteries batteries c size rechargeable d batteries c cell batteries rechargeable c batteries with charger batteries c c batteries rechargeable size c batteries battery c rechargeable batteries c