Harpy Eagle Battery Adapter for Red M18 18V Batteries –

The Harpy Eagle Battery Adapter converts your Harpy Eagle Oil Extractor Pump into a cordless, high-current tool that runs from Milwaukee M18 18V batteries—no soldering required.

Take your oil-extraction work off the vehicle and into tight or remote spaces with a purpose-built adapter kit. This connector assembly gives the Harpy Eagle pump a portable power source using widely available Milwaukee M18 batteries, and it ships as a plug-and-play wiring kit with safety components like a 30A inline fuse and robust 12AWG silicone copper wire.

How does the adapter make the oil extractor portable?

The kit replaces the pump’s tethered 12V lead with a battery-mountable harness designed to accept Milwaukee M18 packs. It includes a molded adapter housing that accepts the battery, pre-cut wires, and quick-lever WAGO connectors so you can attach the pump in minutes.

• Pre-wired adapter housing compatible with M18 battery terminals.
• WAGO lever connectors for tool-free wire joining (no solder/crimp).
• Mounting holes on the adapter for optional fixed installation.

Is installation difficult or do I need special tools?

Installation is straightforward and purposely avoids specialty tools. You only need a wire cutter/stripper and about ten minutes: cut the pump’s power cable, strip specified lengths, insert wires into the WAGO connectors, and secure the fuse.

• Cut pump cable 4–6 inches from the motor and strip insulation per instructions.
• Match color-coded wires (red to red, black to black) into included WAGOs.
• Insert a charged Milwaukee M18 battery and test—no soldering required.

What safety and performance features are built into the adapter?

The assembly emphasizes high-current capability and user protection. It comes with a 30A inline fuse installed plus spare fuses, 12AWG high-conductance silicone copper wire for heat resilience, and a waterproof fuse cap to shield connections during garage or outdoor use.

• Pre-installed 30A fuse with two spare fuses included.
• Heat-resistant ABS housing and waterproof fuse cover for durability.
• Use guidance: 10 minutes on / 10 minutes off duty cycles to protect pump and battery.

Which M18 batteries and pump models are compatible?

The adapter has been tested with a broad range of Milwaukee M18 lithium-ion packs and fits the Harpy Eagle Oil Extractor Pump’s power input when wired correctly. It is not a charging device—only a power delivery interface—so choose a suitable M18 pack for runtime needs.

• Compatible with Milwaukee models like 48-11-1815 through 48-11-1860 series and similar M18 batteries.
• Secure fit prevents wobble or intermittent contact during operation.
• Works with Harpy Eagle Oil Extractor Pump when connected per included steps.

Who is this for? Mechanics, fleet technicians, mobile oil-change professionals, and DIYers who need to extract oil from hard-to-access systems—gearboxes, rear axles, mowers, and equipment far from vehicle power—will benefit most. If you already own a Harpy Eagle pump and have or plan to use Milwaukee M18 batteries, this adapter turns a tethered tool into a convenient cordless solution while adding fuse-protected safety and quick-install WAGO connectors for stress-free setup.