1.Ultra larger capacity: 1.5V 5500mWh lithium C batteries have larger capacity and higher voltage than NIMH batteries, support stable power and longer working time for high power demand devices. 2.Constant 1.5V Output C cell rechargeable batteries 5500mWh ,long lasting lithium batteries with no memory effect, steady 1.5v output voltage. 3.4 Pcs USB Charging cable: Unique USB charging design, 4 Pack USB cable are convenient to charge anywhere directly, no need extra charger. 4.Fast Charging: Quick full charging is achieved in 3 hours with an additional 2-year standby time. 5.USB C cell batteries can be used in any household devices need C cell batteries, great for high-power demand device such as LED candle, flashlight, spotlight, gas water heater, baby monitors, toys and more.