Mellif Cordless Power Grease Gun Compatible with DeWalt 20V MAX

In this review the Mellif Cordless Power Grease Gun is evaluated as a workshop-ready tool for mechanics and maintenance pros who need fast, high-pressure lubrication. The single biggest reason to buy is its combination of up to 10,000 PSI pressure and a kit that includes a Mellif 20V 2.0Ah battery plus a 2.0A fast charger, which lets users start jobs immediately without sourcing extra power packs. The review looks at performance, capacity, and safety to help decide if it fits regular shop use or occasional home projects.

Key Features

• Battery & Charger Included: The kit arrives with a Mellif 20V 2.0Ah battery and a 2.0A fast charger so the tool is ready to use out of the box without buying additional batteries.
• High Pressure Output: A brushless motor delivers up to 10,000 PSI to tackle stubborn fittings and reduce the time spent forcing grease into tight joints.
• Fast Flow Rate: At top speed the gun can deliver a maximum flow of about 10 oz/min at speed 5, which moves grease quickly for larger tasks.
• Large Capacity & Reach: The barrel holds a 14 oz cartridge and the included 30 in hose gives access to hard-to-reach grease points without constantly repositioning the tool.
• Safety & Smooth Operation: A safety lock prevents accidental activation, low-voltage protection shuts the tool down under 14.4V, and the air-bleeder valve plus continuous pump mode helps maintain steady delivery.

Who It's For

The Mellif grease gun is aimed at professional mechanics, fleet maintenance staff, and serious DIYers who need a cordless tool that performs under heavy use and reduces downtime. Its high pressure and included battery/charger make it especially useful for shops that want immediate, portable lubrication capability without relying on cords or separate batteries.

Those who only grease infrequently or need ultra-compact tools for very light household tasks might find a smaller manual or lower-pressure model more economical. Also, users should be comfortable with the note to evacuate air before use to avoid temporary pumping issues.

Pros & Cons

Pros

• Includes a 20V 2.0Ah battery and fast charger so the tool is ready to run on delivery.
• Brushless motor provides high pressure up to 10,000 PSI for demanding lubrication points.
• Large 14 oz capacity and a 30 in hose reduce refill frequency and extend reach to tight areas.
• Safety lock and low-voltage protection add practical safeguards during use.

Cons

• Requires evacuating air before use or it may initially fail to pump grease, adding a setup step.
• Battery runtime may be limited under heavy continuous use compared with higher-capacity packs.

Specifications

Our Verdict

The Mellif Cordless Power Grease Gun is a solid choice for workshops and maintenance crews who need portable, high-pressure lubrication and value immediate use because the kit includes a battery and fast charger. It balances pressure, capacity, and safety features well, making it good value for regular users who will appreciate fewer refills and strong performance.

Frequently Asked Questions

Does the grease gun come ready to run?
Yes, the kit includes a Mellif 20V 2.0Ah battery and a 2.0A fast charger so the tool can be used immediately.

What should I do if no grease is pumped out?
Evacuate air from the system before use using the air-bleeder valve; trapped air can prevent grease flow until released.

Is there protection for the battery?
The tool has a low-voltage protection system that shuts it down when voltage drops below 14.4V to protect the battery.