Portable jump starter adapter compatible with Milwaukee M18 18V lithium batteries. Provides safe and efficient jump-starting for cars with 12V batteries up to 3.5L engines. Built-in protections prevent short circuits, reverse connections, and overcurrent. Pulse charging helps revive deeply discharged car batteries. Lightweight and compact, it is easy to store in your vehicle for emergency roadside use. 

Features

• Wide Compatibility: Works with Milwaukee M18 18V Li-ion batteries including 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828, 48-11-1830, 48-11-1835, 48-11-1837, 48-11-1840, 48-11-1850, 48-11-1860, 48-11-1880, 48-11-1890, and more. Battery not included.
• Emergency Power Solution: Safely jump-start 12V car batteries (up to 3.5L engines) using Milwaukee M18 18V Li-ion batteries. Compact and portable design for easy storage in your vehicle.
• Safe & Protective Design: No output before connection prevents short circuits and electric shock. Built-in current limiting protects both car electronics and the tool battery.
• Reverse Polarity Alert: Red & green indicator lights warn if positive and negative connections are reversed, ensuring safe operation.
• Pulse Charging Function: Revives weak or deeply discharged car batteries with controlled pulse charging for reliable starts.

Specifications

• Input Voltage: 18V DC (Milwaukee M18 Battery)
  
• Output Voltage/Current: 12–13.5V, up to 30A
  
• Wire: 11 AWG, UL-certified, 1.2 ft (35 cm) cable, heat resistant
  
• Engine Compatibility: Gas or diesel engines up to 3.5L
  
• Weight: Approx. 365g
  
• Box Dimensions: 13 x 10 x 10 cm

Package Includes

• 1 x Car Jump Starter Adapter (Battery not included)
  
• 1 x User Manual

Important Safety Notes

• This product is an auxiliary jump starter and cannot directly start a car without connecting to the car battery.
  
• Only for cars with 12V batteries and engines up to 3.5L. Not suitable for large vehicles or heavy-duty engines.
  
• Do not use if the car battery is completely damaged; the car will not start.
  
• Use original or high-quality tool batteries for best performance. Low-quality or old batteries may fail.
  
• Reverse connection alert: Red & green lights indicate incorrect connection.
  
• Short-circuit protection: Voltage across clamps may read 0V without a car battery connected. This is normal.
  
• Do not place the adapter in water or fire. Always handle with insulated clips to prevent electric shock.

Operation Instructions

• Insert a compatible Milwaukee M18 18V lithium battery into the adapter; the green light will flash.
  
• Wait until the green light is steady, indicating the adapter is ready.
  
• Connect clamps to the car battery: red = positive (+), black = negative (-).
  If red & green lights both flash, switch clamps immediately.
  If green & red lights flash alternately, battery charge is too low; use a fully charged M18 battery.
  
• Once the green light is steady, start the car (typically 3–10 minutes charging). Avoid ignition longer than 2 seconds per attempt.
  
• After successful ignition, remove clamps and battery within 30 seconds to prevent hazards. Let the engine continue to run normally.
  
• This adapter does not convert or step down voltage; it safely transfers power from the tool battery to jump-start the car.