Battery Rebuild Kit for Bosch 18V BAT609 BAT610 BAT618 - 5S2P BMS (No Cells)

Battery Rebuild Kit for Bosch 18V BAT609, BAT610 & BAT618 – 5S2P, 5S BMS, Nickel, Shell & Hardware (No Cells)

Rebuild a worn-out Bosch 18V BAT609, BAT610 or BAT618 lithium-ion battery pack with this complete DIY kit. Designed for 5S2P (10-cell, 18 V-class) builds using 18650 cells, this set includes a matched 5S BMS, precision-cut pure nickel for low-resistance connections, a durable housing shell, and all required hardware — everything you need except the cells.

This is a compatible replacement kit. It is independently manufactured and is not an original Bosch-branded product.

• Fits: Bosch 18V BAT609, BAT610 and BAT618 battery packs
• Complete kit (no cells): 5S BMS, pure nickel, housing shell, screws & hardware
• Pure nickel bus: Low resistance for clean welds and reliable conductivity
• DIY-friendly: Ideal for experienced rebuilders and technicians
• Ships from California for fast U.S. delivery

What’s Included

• 1 × 5S BMS (18 V-class lithium-ion)
• Pre-cut pure nickel plates for 5S2P connections
• Bosch-compatible 18 V housing shell (top & bottom)
• Hardware set – screws and mounting components

What Is Not Included

• Cells — you supply your own 18650 lithium-ion cells
• Charger
• Spot welder or assembly tools
• Power tool

Compatibility

• Replaces the housing and electronics of Bosch 18V BAT609, BAT610 and BAT618 packs
• Built for the 10-cell 18650 (5S2P) layout used in these packs
• Please review all product photos carefully before ordering

Notes & Safety

• No cells included. You provide the 18650 cells.
• Requires spot welder and basic battery-handling experience.
• Verify polarity and insulation before assembly. Incorrect wiring can cause damage or injury.
• Final pack capacity depends entirely on the cells you install.

Additional Parts and Resources

For additional battery components, cells, connectors, BMS boards, nickel strips, tools, and supplies, visit RenewSpark.

For helpful tools, calculators, technical information, and additional resources, download the RenewSpark Tools app.

Bosch is a trademark of its respective owner. This compatible product is independently manufactured and is not produced, sponsored, or endorsed by Bosch.