FEIN ProCORE 18V 4.0Ah AS Lithium-Ion Battery Pack 92604341020

On a busy construction site, a carpenter swaps out a depleted battery on his FEIN cordless circular saw and slots in the ProCORE 18V 4.0Ah AS pack. Within seconds, the tool is back to full power, cutting through dense hardwood without hesitation. This battery is built for professionals who cannot afford downtime, delivering consistent high-current output even under heavy loads.

Key specifications

• Voltage: 18 V
• Capacity: 4.0 Ah
• Energy: 72 Wh
• Battery type: Lithium-Ion (Li-Ion)
• Series: ProCORE18V
• Cooling technology: COOLPACK 2.0
• Charge level indicator: LED
• Compatibility: FEIN 18V cordless tools (AS-Motor)
• Charging system: Bosch Professional 18V System chargers
• Cell technology: High-power cells
• Protection: Overload, overheat, deep discharge
• Impact resistance: Yes
• Self-discharge rate: Low

Why choose it

The ProCORE 18V 4.0Ah AS uses advanced high-power cells and COOLPACK 2.0 thermal management to sustain high discharge currents without overheating. This means your tools run at full performance for longer, even in demanding applications like heavy drilling or sawing. The integrated LED indicator lets you check remaining charge at a glance, so you can plan your work without surprises. Its robust construction withstands job site knocks and drops, and the low self-discharge rate ensures the battery is ready when you are, even after weeks in storage.

Ideal use cases

• Professional construction and renovation work
• Heavy-duty drilling, fastening, and cutting
• Extended runtime for cordless tools on large projects
• Cold weather operation where COOLPACK 2.0 helps maintain performance
• Replacement or spare battery for FEIN 18V cordless tools

Good to know

This battery is part of the ProCORE18V series, designed for maximum power and compatibility across the FEIN 18V cordless platform. It can be charged with Bosch Professional 18V System chargers, adding flexibility if you already own compatible chargers. The battery includes electronic cell protection (ECP) against overload, overheating, and deep discharge, prolonging its service life. With a 4.0 Ah capacity, it balances weight and runtime for all-day use without excessive bulk.