BAT609 18V 6000mAh Lithium Replacement Battery - Long Run Time

Our review of the BAT609 18V 6000mAh replacement battery finds it best suited for DIYers and tradespeople who need a cost-effective, high-capacity spare for Bosch 18V tools. The bottom line: this Labtec replacement delivers notably long run time and solid protection circuitry, matching the runtime expectations of original packs for many common cordless tools. It is presented as a direct swap for numerous Bosch 18V battery part numbers, and the built-in safeguards against overcharge, overdischarge and short circuit give confidence in daily use.

Key Features

• High capacity: The 6000mAh / 6.0Ah cell capacity provides extended runtime compared with lower-capacity replacements, reducing downtime on long jobs.
• 18V compatibility: Designed for Bosch 18V battery part numbers and many GSR, GSB, GKS and GWS tool models so it fits a wide range of cordless power tools.
• Li-ion chemistry: Lightweight Li-ion construction keeps the battery pack manageable at about 650g while delivering 108Wh of energy for power-hungry tools.
• Built-in protection: Integrated circuits protect against overcharge, overdischarge and overcurrent and include short circuit protection for safer charging and use.
• Quality cells and testing: Manufacturer testing with CE and RoHS certification indicates cells and construction are intended to meet or exceed OEM specifications.
• After-sale support: One year warranty and responsive customer service offer a conditional refund or replacement if a new battery presents a quality issue.

Who It's For

This battery is a practical choice for homeowners, builders and mechanics who use Bosch 18V cordless tools and want a higher-capacity spare without paying OEM prices. It is particularly useful for users who rotate batteries through a busy job site and need longer runtime between charges.

Those who should look elsewhere include owners of Bosch tool variants known to have tight mechanical tolerances or unusual connector variants; a few users report fit issues on specific oscillating tools. If absolute guaranteed OEM fit is essential, consider sourcing an official Bosch pack.

Pros & Cons

Pros

• Longer runtime from the 6000mAh capacity, which reduces charge cycles during extended work.
• Comprehensive protection circuitry improves safety and battery longevity under normal use.
• Compatible with many Bosch 18V part numbers and common tool models, making it a versatile backup.
• Good value compared with OEM packs, with CE and RoHS testing and a one year warranty for peace of mind.

Cons

• Some users report fit or clearance issues with specific Bosch tool models, so fit should be checked before heavy reliance.

Specifications

Battery type	Li-ion
Voltage	18V
Capacity	6000mAh / 6.0Ah (108Wh)
Item weight	650g
Compatible part numbers	BAT609, BAT609G, BAT610G, BAT611, BAT618, 2607336092, 2607336169
Certifications	CE, RoHS

Our Verdict

The BAT609 18V 6000mAh replacement is a strong value for users who need extended runtime across a range of Bosch 18V tools; it balances higher capacity with protection circuitry and manufacturer testing. Buy it if you want a reliable, lower-cost spare for general purpose cordless work, but verify fit on oddball tool models before depending on it as your only pack.

Frequently Asked Questions

Will this battery fit my Bosch 18V tool?
It is compatible with many Bosch 18V part numbers and common models, but a small number of tools have tight fit tolerances; check physical fit if possible.

Is the battery safe to charge and use daily?
Yes, the pack includes built-in protection against overcharge, overdischarge and short circuit, and it carries CE and RoHS testing from the manufacturer.

What warranty and support come with the battery?
The manufacturer offers a one year warranty and customer service with conditional refund or replacement for quality issues within that period.