Attention Before Purchase: This Type C Heated Jacket Charger Cable converts 5V power from your QC 3.0 or PD function power bank into 12V, ensuring your heated jacket runs effectively . The heated jacket adapter cable only work with QC 3.0 Power Bank or PD function Power Bank. NOT work for old version power bank which USB outlet is 1.0A, 2.0A, 2.1A, 3A. 12V Heated Jacket Step-up Adapter Cable allows you to use your own existing QC 3.0 or PD function power bank to power your heated jacket, offering a budget-friendly solution for your outdoor and work needs. This Magic Cable can be as Replacement Heated Jacket Battery Pack designed to work with a variety of milwaukee heated Jacket battery, milwaukee m12 extended battery, Snap-on heated jacket battery, Revean jacket battery, 12v tool batteries and 12V heat jacket battery. Q001. Why your Jacket cannot work with this Cable? ? A001, This Type C Heated Jacket Charger Cable is designed to boost the output from your QC 3.0 or PD-enabled power bank from 5V to 12V. It only works with power banks that support QC 3.0 or PD functions. It will NOT work with older power banks that have 1.0A, 2.0A, 2.1A, or 3A USB outputs. If your jacket isn’t working, it’s likely because your power bank doesn’t support real QC 3.0 or PD charging. Q002. Why your Jacket cannot work with this Cable?? A002, The Heated Jacket Charger Cable connector size of this cable is 5.5mm. If your jacket’s connector is 3.5mm or 4.0mm, This Type C Heated Jacket Charger Cable won’t fit, and the Step-up Adapter Cable won’t work with your heating jacket. (Most 7.4V or 8.4V heated jackets use 3.5mm or 4.0mm connectors, which are incompatible with this 12V heated jacket step-up cable.) Smarkey Heated Jacket Battery Step-Up Adapter Charger Cable is the ideal solution for users who want to keep their heated jackets running without the need for expensive brand-specific battery packs. Designed for use with popular power tool Heated Jacket brands like Milwaukee, M12, Makita, Snapon, Metabo, Craftsman, and AEG Gear, this adapter cable lets you harness the power of your existing QC 3.0 or PD function power bank to deliver a 12V output to your heated jacket. This versatile Heated Jacket Step-Up Adapter Charger Cable works by converting the standard 5V output from your power bank into the 12V needed for heated jackets. As long as your power bank is QC 3.0 or PD-enabled, you can quickly and easily power up your heated jacket and enjoy long-lasting warmth. Note: Please ensure your power bank has a QC 3.0 or PD function. This Step-Up Adapter Cable is not compatible with older power banks that have lower USB outputs like 1.0A, 2.0A, 2.1A, or 3A. Additionally, the cable uses a 5.5mm connector, so please verify the size of your jacket's connector before purchasing—this adapter is not suitable for jackets with 3.5mm or 4.0mm connectors.