DIY Lithium-Ion Battery Shell Housing Kit with Protection Circuit Board for 18V-20V Battery Repair

Rebuild damaged tool packs or assemble custom high-capacity batteries at a fraction of the replacement cost. Engineered for 18V to 20V slide-style power tool battery configurations, this DIY lithium-ion battery shell housing and circuit board kit provides the complete casing and electronic foundation needed to restore dead or cracked battery packs. Each kit includes a heavy-duty, impact-resistant ABS replacement casing, custom cell spacers, conductive nickel connection strips, assembly springs, and an integrated smart battery protection circuit board (PCB). The pre-aligned circuit board actively monitors voltage, charging levels, and thermal conditions across individual cell banks, protecting against overcharging, deep discharge, and short circuits. Ideal for mechanics, technicians, and electronics hobbyists, this complete cordless tool battery rebuild enclosure breathes new life into your cordless tool power setup.

Key Features

• Complete Rebuild Kit: Includes the outer shell casing, cell holder spacers, internal nickel connection sheets, spring latches, and screws.

• Integrated Protection Circuit Board: Smart PCB monitors voltage levels to safeguard against overcharge, over-discharge, short-circuit, and high-temperature conditions.

• Tough Impact-Resistant Shell: Molded from heavy-duty, flame-retardant ABS polymer engineered to survive job-site drops, grease, and shop vibration.

• Precise Cell Alignment: Custom internal battery brackets keep individual cells firmly separated and aligned to prevent shorting and excessive heat buildup.

• LED Power Gauge Indicator: Integrated status light panel provides clear, real-time readouts of remaining battery capacity with the push of a button.

• Exact Slide-and-Lock Fit: Precision-molded guide rails snap securely into compatible 18V-20V cordless power tools and standard chargers.

Product Specs

• Compatible Platform: Standard 18V to 20V slide-style lithium-ion cordless tool battery systems

• Internal Battery Cell Type: Designed for standard cylindrical 18650 lithium-ion cells (Bare Cells Not Included)

• Circuit Board Features: Overcharge, over-discharge, over-current, and short-circuit protection with balance control

• Shell Material: Flame-Retardant Impact-Resistant ABS Composite