Powerline Adapter Durable Interface Cable For Home Office Use Maintains Network When Power Off Supports 3.7V/4.2V/7.4V/12.6V Charging 18650 Battery Pack Car Cleaner

✨ USB 5V To 9V 12V DC Boost Voltage Converter Cable 5.5mm Barrel Plug Power Cord For Router Modem Lithium Battery Car Vacuum Product Type Portable USB step-up voltage conversion cable equipped with standard 5.5mm DC barrel jack, converts standard 5V USB power output to stable 9V or 12V power for multiple small electronic devices. Core Functional Features Voltage boost conversion: Converts 5V power bank/USB adapter output into steady 9V or 12V direct current. Standard 5.5*2.1mm DC barrel connector: Compatible with most routers, optical modems, lithium battery equipment and small household appliances. Stable constant output circuit: Maintains consistent voltage without fluctuation to protect connected electronics. Wide equipment compatibility: Supports routers, fiber modems, 18650 battery packs, car vacuum cleaners and low-power DC appliances. Durable reinforced cable joint: Anti-break design for long-term repeated plug and pull use. Applicable Scenarios Home power outage emergency network supply, outdoor lithium device charging, portable car vacuum power supply, daily small DC equipment mobile power connection.