Milwaukee REDLITHIUM USB 4V 3Ah Lithium Ion Power Tool Battery Pack, 48-11-2131

Step up your power game with the Milwaukee® REDLITHIUM™ USB 3.0Ah Battery Pack—built for longer runtime, a longer lifespan, and up to 3X faster charging than standard options. Offering 20% more capacity than the original REDLITHIUM™ USB battery, it delivers reliable performance across all Milwaukee USB Rechargeable tools. Compact yet powerful, this battery is made for professionals who need dependable, portable energy that lasts. With support for up to 1,000 recharges, it’s built to go the distance. Use it with any Milwaukee USB Rechargeable device or pair it with the REDLITHIUM™ USB Portable Power Source & Charger (48-59-2012) to stay powered up with less downtime. Whether you're running headlamps, lights, or inspection tools, this battery keeps everything operating at peak performance—so you can focus on the job, not your battery life.