Premium 28V Lithium-Ion Battery engineered for Milwaukee power tools with ultra-precise cell matching technology. Features high-density 18650 cells delivering stable 3.0Ah/4.0Ah capacity with built-in PCM protection against overcharge/over-discharge. CNC-machined copper terminals ensure zero-resistance connectivity. Ideal for M18 Fuel cordless drills, impact wrenches and rotary hammers in construction/automotive applications. Rigorously tested to withstand extreme job site conditions (-20°C to 60°C operating range). Direct replacement for OEM part 48-11-2830 with 100% dimensional accuracy. Ships with premium injection-molded ABS casing featuring impact-resistant ribs. Backed by 500+ charge cycles with less than 20% capacity degradation. Compatible with all Milwaukee chargers in the M18 system.