Lithium ion battery products are widely used in solar street light. lithium ion solar battery bank with a lighter weight, the battery can be installed behind the solar panels. With longer cycle life, lithium battery solar storage system works a long time and highly reduces the replacement cost. The solar controller is built inside the case, and we will match the accessory cable and also the screw nuts, so the system is simple to install. The switch cable inside stops the power consumption from the solar controller when not in use. We also have the constant voltage lithium battery storage and control solution which is perfectly applicable for solar CCTV cameras.