Abuiego 2 Pack 4V 3.5Ah Red Lithium USB Battery Replacement for Milwaukee Headlamp | 20% Longer Runtime

Powerful, flexible power for Milwaukee headlamps

The Abuiego 2 Pack 4V 3.5Ah Red Lithium USB Battery Replacement delivers a compact, reliable power solution for Milwaukee M18 headlamps and flashlights. This two‑pack is designed to extend your work sessions with practical charging options and sturdy construction, giving you confidence when you need light most.

Built-in USB-C Charging for on-the-go power

Skip the dedicated charger. The integrated USB‑C port lets you recharge directly from a power bank, laptop ports, wall adapters, or car chargers—perfect for on-site repairs, camping trips, or emergency setups where convenience matters.

Precise Compatibility with Milwaukee tools

Engineered to replace the 48-11-2131 battery, the pack remains fully compatible with M18‑series headlights and flashlights. Note: it is not suitable for non‑M18 tools.

4V High-Capacity Performance with lasting power

4V high-density lithium‑ion cells deliver steady power for construction, outdoor tasks, or home repairs. This design supports long-term reliability, with a strong cycle life and the potential for up to 20% longer runtime in typical use compared to original batteries.

Durable & Protected design

The rugged ABS shell resists drops, vibrations, and temperature swings. Built‑in safeguards guard against overcharging, over-discharging, and short circuits, meeting safety standards for everyday handling and storage.

Cost‑effective & Reusable

Choose a budget‑friendly replacement that reduces disposable battery waste while keeping essential tools powered. Ideal for professionals, DIYers, and outdoor enthusiasts who want dependable backup energy at a reasonable price.

Key benefits

• USB‑C charging enables flexible, on-site recharging from multiple sources
• Replaces the original 48-11-2131 for Milwaukee M18 headlights/flashlights
• 4V high‑density cells provide reliable power for common tasks
• Rugged ABS shell withstands drops and temperature changes
• Potential for up to 20% longer runtime in typical use

What’s in the pack

• 2 x Abuiego 4V 3.5Ah red lithium USB batteries

Real-life scenarios

Power a dimly lit attic during a home project, illuminate a worksite at dusk, or keep a camping lantern ready in case of an outage. The 2‑pack approach ensures you have a spare battery on hand when you need it most.