Power Tools for Professionals



18V Lithium-Ion Battery Charger

This compact 18V charger gets the user power ready in a hurry. The Bosch GAL18V-40 Lithium-ion charger can fully charge a spent CORE18V 4.0 Ah Lithium-ion battery in approximately one hour, and it is compatible with all Bosch 18V Lithium-ion batteries. This means that users are ready to get back to work with little downtime. It is engineered with regulated 80/20 dual-mode charging for fast and safe charging. It features charging indicator lights showing when the battery is fast charging, charging in long-life mode or finished charging. The error indicator will alert the user if charging is interrupted due to temperature and/or battery failures.

Read more Show less


  • (1) GAL18V-40 18V Lithium-Ion Battery Charger


  • Compact charger design – gets users power ready fast, with dual-mode charging, compatibility with all Bosch 18V Li-ion batteries
  • Fast-charging operation – fully charges a spent CORE18V 4.0 Ah Lithium-ion battery in just over an hour
  • Regulated dual-mode charging – safely charges battery fast; first 80% of charge is fast, remaining 20% in long-life mode
  • Battery-status indicator – provides indication if charger is in fast-charging mode, long-life mode or when charging is complete
  • Error indicator – will alert the user if charging is interrupted due to temperature and/or battery failures
  • Flexible charging solution – Compatible with all Bosch 18V Lithium-ion batteries
  • Compact design – small and light charger designed to be convenient and portable

Technical Data

Automatic Shut-Off Yes
Charger Volt Range 14.4V - 18V
Height 3.0"
Length 7.3"
Model Number GAL18V-40
Weight 1.2lb
Width 4.5"
Works With Bosch 18V Batteries
All Bosch 18V Lithium-ion Batteries, including the GBA18V120 12.0 Ah Battery
Includes (1) GAL18V-40 18V Lithium-Ion Battery Charger
Read more Show less

Owner's Manual



Customer Support

Have a tool, accessory, application or service question?
Call us at 1-877-BOSCH99 (1-877-267-2499) or visit the Frequently Asked Questions.

Search for Parts Diagram

Locate and download the parts diagram for your tool.

Product Registration

Protecting your investment in Bosch power tools can save you time and money in the future.

Order Spare Parts

Order your genuine Bosch parts here.

Contact Us

Call our Service Hotline or use our contact form.

1-877-BOSCH99 (1-877-267-2499)

Mon-Fri: 7:00-19:00 CST


Visit the Frequently Asked Questions section.
We may already have the answer for your questions.

Show FAQ
TEXT Customer Service

Have a service related question? Text us here.

Mon-Fri: 7:00-19:00 CST