AEG 18V to Bosch 12V Battery Adapter

Use your AEG 18V batteries on Bosch 12V cordless tools, without buying into a second battery platform. Your AEG 18V battery is 18V where Bosch 12V tools expect 12V. A DC-DC converter inside steps it down and holds it there, so the tool never sees more than it is built for. Built with a durable injection-molded ABS housing and pure copper contacts for steady current delivery. Your existing batteries do more work, and there is no second ecosystem to buy into.

Specifications

• SKU PTA-AEG18-BOSB12
• Fits this battery AEG 18V (Lithium-Ion)
• Battery voltage 18V
• Runs these tools Bosch 12V (Lithium-Ion)
• Tool voltage 12V
• Housing ABS (Injected)
• DC-DC converter Yes — 18V to 12V
• Terminals Copper
• Current rating 30A continuous (60A peak at 18VDC for up to 2 seconds)324 Watt continuous at 10.8V nominal
• Internal wiring 5 mm²
• Weight 124 g (4.4 oz / 0.27 lb)
• Colour Grey, Orange
• 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 August 21, 2026)

Why choose this adapter

• 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 30A continuous with 60A 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.

AEG 18V and Bosch 12V compatibility

It works in one direction only: AEG batteries powering Bosch tools. For the opposite pairing, see adapters that run on Bosch 12V batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the AEG 18V platform and that your tool takes Bosch 12V batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge AEG or Bosch 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 AEG 18V battery.