The whole remote control has no battery. Before installation, please remove dust and make sure there is no dust on the back of the TV to avoid falling. A small TV component provides USB port current, which does not reach 2A when the LED strip is plugged into the USB port of the TV. Sometimes does not work, does not open or does not flash, you can use the universal 5V 2A USB charger to power the LED strip. Specification: Model: 5V USB LED Strip Light. Material: Plastic, Resin PCB Width: 10mm PCB Color: Black LED Type: SMD 5050. Quantity: 30 LED/m Beam angle: 120 degrees. Voltage: 5 V DC Storage temperature: -40 to 80 degrees Celsius. Operating temperature: -25 ~ 60 degrees Celsius.