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The DEWALT 5140161-55 is a battery controller designed to manage charge and discharge cycles within compatible DEWALT power tool battery systems. This component regulates communication between the battery pack and the tool or charger, protecting cells from overcharge, over-discharge, and thermal events. It is an OEM replacement part intended for installation by qualified technicians performing battery pack repairs or warranty-level servicing on DEWALT power tools.
This battery controller is used in the repair and refurbishment of DEWALT battery packs. Typical install scenarios include bench-level power tool service where a failed controller is causing pack shutdowns, charging faults, or loss of communication with the tool. This part is relevant to service centers and experienced technicians working on DEWALT power tool systems.
Designed as an OEM-style replacement battery controller for compatible DEWALT power tool battery pack assemblies. Refer to DEWALT service documentation to confirm fitment for your specific battery pack model before ordering.
Battery controller replacement is a bench-level repair typically performed by authorized service technicians with experience in power tool battery systems. Fully discharge and isolate the battery pack before disassembly, and follow all applicable safety procedures for lithium-ion cell handling. Improper installation can result in damage to cells, charger, or connected tools. Consult DEWALT service manuals and applicable safety standards before proceeding.
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