Milwaukee M12 12V 4.0Ah Battery Replacement

Milwaukee M12 12V Battery — Key Specifications

The Milwaukee M12 12V battery is a direct plug-and-play replacement for Milwaukee M12 cordless tool batteries, delivering reliable 4.0Ah high-capacity performance at a competitive factory-direct price.

Voltage: 12V Capacity: 4.0Ah Cell Type: Lithium-Ion (Li-ion) Compatible Models: 48-11-2420 / 48-11-2440 / 48-11-2401 Certifications: CE / RoHS LED Indicator: Built-in charge level display MOQ: 100 pcs (OEM/ODM available)

 Compatible Milwaukee M12 Tools

The Milwaukee M12 12V battery fits all Milwaukee M12 cordless tools with no modification needed, including drills and drill drivers, screwdrivers and impact drivers, circular saws and reciprocating saws, LED work lights and flashlights, cordless vacuums, and any other Milwaukee M12 platform tool. For the full compatible tool list, visit the official Milwaukee website.

 Why Choose HNF Battery?

High-Capacity 4.0Ah for Longer Runtime

At 4.0Ah, this battery delivers up to 2x the runtime of a standard 2.0Ah pack, reducing downtime on the job and keeping your tools running through longer work sessions.

Grade-A Cells for Consistent Performance

We use only Grade-A lithium-ion cells in every Milwaukee M12 12V battery pack. Grade-A cells deliver stable voltage output, longer cycle life (500+ charge cycles), and lower self-discharge compared to generic replacements. Your tools run at full power longer and your battery lasts for years, not months.

Built-in BMS Protection

Every battery includes a fully integrated Battery Management System (BMS) protecting against overcharge, over-discharge, short circuit, and overheating — safeguarding both your battery and your tools from electrical faults.

LED Charge Indicator

The built-in LED charge indicator lets you check remaining battery level at a glance before starting work, reducing unexpected downtime on the job.

Drop-in Replacement — No Modification Needed

Engineered to the exact same dimensions and connector as the original Milwaukee M12 battery. Simply slide it into your tool and start working. No adapters, no firmware updates, no compatibility issues.

CE / RoHS Certified

Our batteries carry CE and RoHS certifications, confirming compliance with international safety and environmental standards. UN38.3 test reports are available upon request for air freight shipments.

 OEM & Custom Orders

HNF Battery supplies wholesale distributors, hardware retailers, and private-label brands worldwide. Custom capacity (2.0Ah / 4.0Ah / 6.0Ah), branding, and packaging are available from 100 units. All batteries are pre-tested before shipment and backed by a 12-month warranty against manufacturing defects. Full export documentation provided including UN38.3 test reports.

MOQ starts from 100 units. Samples are available before bulk orders. For a factory quote, visit our