DEMAKIMI Cordless Fuel Transfer Pump 4.2 GPM — Auto-Stop, DeWalt/Milwaukee Battery Compatible

The DEMA​KIMI 4.2 GPM Cordless Fuel Transfer Pump is a battery-powered pump that quickly moves gasoline, diesel, light oils or water and automatically stops when a tank is full.

Designed for homeowners, mechanics, boaters and field crews who need fast, portable refueling, this pump runs on common tool batteries so you don’t have to buy a special power pack. With compatibility for DeWalt 20V and Milwaukee 18V batteries, a high-flow 4.2 gallons-per-minute output, and a smart auto-stop sensor, it replaces slow manual siphons and cumbersome electric units where outlets aren’t available.

How fast will this pump refill my vehicle or equipment?

This model delivers up to 4.2 GPM (15.9 L/min), so it transfers fuel much faster than hand pumps or small portable units. For example, a 15-gallon tank can be moved in under four minutes under ideal conditions. Flow can vary with hose length, battery charge, and elevation.

• Peak flow: 4.2 gallons per minute (15.9 L/min).
• Typical 15-gallon transfer: under 4 minutes.
• Actual speed influenced by battery level and hose positioning.

Will the pump prevent overfilling or spills?

The pump includes an auto-stop sensor that detects when the receiving tank is full and shuts the unit off automatically. If you need to interrupt flow immediately, a single power-button press stops the pump. The sensor reduces the need for constant supervision, improving safety during transfer operations.

• Built-in auto-stop sensor stops flow when full.
• Manual stop: instant shutdown via power button.
• Suitable for gasoline, diesel, light oils and water (not for corrosive chemicals).

What containers and batteries does it work with?

Out of the box you get three adapters sized to seal common North American fuel cans and a reinforced hose that resists kinks. The pump accepts DeWalt 20V and Milwaukee 18V tool batteries so you can reuse batteries you already own on job sites or at home.

• Includes three adapters: 2.0", 2.5", and 2.75" for standard fuel cans.
• 1.3-inch suction inlet for narrow openings and tight-fitting spouts.
• Works with DeWalt 20V and Milwaukee 18V tool batteries (battery not included).

How durable and serviceable is the pump for regular use?

DEMAKIMI builds this pump to last with reinforced hose construction and three-stage quality testing before shipment. Routine rinsing after use helps preserve seals and prevent fuel residue buildup; US-based support is available for parts or questions.

• Reinforced, kink-resistant hose to maintain consistent flow.
• Three-stage factory quality testing for reliability.
• US-based customer support with prompt responses within 24 hours.

Who is this for: The DEMA​KIMI cordless fuel transfer pump is aimed at anyone who needs quick, mobile refueling without relying on mains power — homeowners topping off lawn tractors, boat owners filling fuel tanks at the dock, fleet technicians servicing vehicles on-site, and contractors who move fuel between containers on remote jobs. It’s best suited for non-corrosive liquids like gasoline, diesel, light oils and water, and for users who already own compatible DeWalt or Milwaukee batteries and want a rugged, easy-to-use transfer solution.