Craftsman 20V to Kobalt 24V Battery Adapter

Use your Craftsman 20V batteries on Kobalt 24V cordless tools, without buying into a second battery platform. 20V from the battery, 24V at the tool: the adapter converts rather than passing the voltage through, so the tool sees what it was built for. Built with an injection-molded ABS battery interface, a 3D-printed ABS tool socket for a close fit, and pure copper contacts. One battery platform across more tools means less spent on batteries and less to keep charged. It also carries battery protection electronics (BMS) inside.

Specifications

• SKU PTA-CRA20-KOB24
• Fits this battery Craftsman 20V (Lithium-Ion)
• Battery voltage 20V
• Runs these tools Kobalt 24V (Lithium-Ion) from Lowe's
• Tool voltage 24V
• Housing ABS
• Terminals Copper
• Current rating 55A continuous (100A peak at 18VDC for up to 2 seconds)1188 Watt continuous at 21.6V nominal
• Weight 145 g (5.1 oz / 0.32 lb)
• Colour Red, Black
• Operating humidity 5–95% RH
• Operating temperature -10 °C to 50 °C (14 °F to 122 °F)
• USB port No
• Built-in BMS protection Yes
• Warranty 12 months after the date of delivery
• Revision Revision 01 (released on May 19, 2026)

Why choose this adapter

• A Battery Management System inside the adapter cuts power before the battery is drained too far — protection your battery may not have on its own.
• Solid copper terminals, so less of the current is lost as heat.
• Rated for 55A continuous with 100A 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.

Craftsman 20V and Kobalt 24V compatibility

It works in one direction only: Craftsman batteries powering Kobalt tools. For the opposite pairing, see adapters that run on Kobalt 24V batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Craftsman 20V platform and that your tool takes Kobalt 24V batteries.

Important charging and safety information

This adapter is for powering cordless tools and nothing else. It cannot charge Craftsman or Kobalt 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 Craftsman 20V battery.

Before you buy

Use a battery of at least 3 Ah — 4 Ah or more is better. A higher-voltage tool draws harder on the battery, and a small one can sag until its own protection cuts out before it is empty.