Power / Batteries Chargers
Bosch GAA 18V-48 Professional Battery Adapter User Guide
Quick guide for the Bosch GAA 18V-48 battery adapter, covering battery installation, USB device charging, heating element connection, and troubleshooting.
Table of contents
Quick guide from the manual
The Bosch GAA 18V-48 is a battery adapter designed to use Bosch 18V lithium-ion batteries as a power source. It allows you to charge up to two USB devices and power a heating element for heated workwear simultaneously.
Device description
The adapter features two USB ports (Type A) and a dedicated socket for connecting heated workwear. It includes an integrated belt clip for portability and an activation button to start the power output.
Battery installation
To install the battery, slide it into the adapter until it clicks into place. Do not use force. To remove, press the release buttons on the battery and pull it out.
Operation
Charging USB devices: Connect your USB device's charging cable to one of the USB ports on the adapter. Press the activation button to start charging. The ports will automatically deactivate after 30 seconds if no cable is connected, or once charging is complete to save energy.
Connecting heated workwear: Plug the heating element connector into the dedicated socket on the adapter. Press the activation button to power the heating element. Adjust the heat settings on the garment itself.
Troubleshooting
- USB device not charging: Ensure the battery is charged. Check that the device is compatible with the adapter's output (see technical data).
- Heating element not warming: Ensure the battery is charged and the connection is secure.
- Garment not heating and USB not charging: Remove the battery, wait 10 seconds, and reinsert it.
Safety
Protect the battery from heat, fire, water, and moisture. Do not use the adapter if the battery release buttons are broken. Only use the recommended batteries listed in the technical data.
Manufacturer information
Bosch
Practical help
Common problems
External USB device not charging
Charge the battery, ensure the cable is connected properly, and press the activation button. Check if the device is compatible with the adapter's output specifications.
Heating element not warming up
Charge the battery, ensure the heating element cable is securely connected to the adapter, and press the activation button.
Garment not heating and USB not charging
Remove the battery from the adapter, wait 10 seconds, and reinsert it.
Before use
- Ensure the battery is fully charged.
- Check that the battery release buttons are intact.
- Verify that the USB device is compatible with the adapter's output (5V, 2.4A).
- Ensure the ambient temperature is within the allowed range (-20°C to +50°C).
Specs in practice
- USB Output Voltage
- 5V, standard for most mobile devices.
- USB Output Current
- 2.4A per port, suitable for fast charging most smartphones and tablets.
- Heating Element Voltage
- 12V, specifically for compatible heated workwear.
Model compatibility
- Compatible with Bosch 18V Li-ion batteries (GBA 18V and ProCORE18V series).
- Not compatible with specific older battery models listed in the manual (e.g., 1 607 A35 0BG).
- Designed for use with Bosch heated workwear.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.