The operating time with two LED strips is about 15 hours, with four LED strips about seven hours. Due to the constant standby, a slow discharge of the powerbank takes place in standby mode. If the Lume-1 smart is not used for a longer period of time, we recommend switching off the powerbank to ensure the charge level. To do this, you can simply disconnect the USB cable from the powerbank, it will then switch off after about 30 seconds.