Bosch (Blue) 18V to Metabo 18V CAS Battery Adapter

Use your Bosch 18V GBA (Blue) batteries on Metabo CAS 18V cordless tools, without buying into a second battery platform. Both run at 18V, so the adapter changes the fitting and not the voltage. The molded ABS housing keeps it light and hard-wearing, and pure copper contacts keep current delivery steady. This helps you get the most out of your existing battery system while avoiding the cost of another set of batteries and chargers.

Specifications

• SKU PTA-BOSB18-MET18
• Fits this battery Bosch 18V GBA (Blue) (Lithium-Ion)
• Battery voltage 18V
• Runs these tools Metabo CAS 18V (Lithium-Ion)
• Tool voltage 18V
• Housing ABS (Injected)
• Terminals Copper
• Current rating 40A continuous (80A peak at 18VDC for up to 2 seconds)720 Watt continuous at 18V nominal
• Internal wiring 5 mm²
• Weight 113 g (4.0 oz / 0.25 lb)
• Colour Black
• Operating humidity 5–95% RH
• Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
• USB port No
• What's in the box Battery adapter
• Warranty 12 months after the date of delivery
• Revision Revision 01 (released on May 1, 2024)

Why choose this adapter

• Your Bosch 18V GBA (Blue) battery and Metabo CAS 18V tools run at the same voltage, so the adapter changes the fitting rather than converting anything.
• Injection-moulded ABS, not 3D printed — no layer lines to split under load.
• Solid copper terminals, so less of the current is lost as heat.
• 5 mm² internal wiring, rated for 40A continuous with 80A peak at 18VDC for up to 2 seconds, so a high-draw tool is not held back by the adapter.
• Covered by a 12-month warranty from the day it arrives.

Bosch 18V GBA (Blue) and Metabo CAS 18V compatibility

It works in one direction only: Bosch batteries powering Metabo CAS tools. For the opposite pairing, see adapters that run on Metabo CAS 18V batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Bosch 18V GBA (Blue) platform and that your tool takes Metabo CAS 18V batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Bosch or Metabo CAS batteries and must never be connected to a charger of any kind. Always take the battery out of the adapter before charging, and charge it on the original charger made for your Bosch 18V GBA (Blue) battery.

Before you buy