Craftsman 20V to Kobalt 24V Battery Adapter
€31,95
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Craftsman 20V to Kobalt 24V Battery Adapter
€31,95
Taxes included.
Free Shipping to Germany & UK. Other European countries around €3 (local currency applied)Zero customs fees. Zero surprise taxes.
Safety feature
Built-in BMS Protection
Integrated Battery Management System (BMS) helps prevent battery over-discharge and improves safety.
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
- DC-DC converter
- Yes — 20V to 24V
- 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 deliveryMore details
- 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.
How it works
-
1. Use the battery you own
Any compatible Craftsman 20V battery of 3Ah or more.
-
2. Slide on the adapter
It goes where the original Kobalt 24V battery sits.
-
3. Click in and work
No tools, no wiring, no modifications.
Craftsman 20V to Kobalt 24V — Common Questions
My battery says 20V. Can it run a tool rated differently?
Yes, and they are closer than the labels suggest. 20V is what a Craftsman 20V battery measures off the charger with no load; 18V is what it holds in use. Kobalt 24V tools are built around 21.6V. The two numbers describe the same class of battery, which is why the adapter works rather than merely fits.
Will this fit my other Craftsman batteries?
Only Craftsman 20V batteries. Craftsman also sells Craftsman 20V Bolt-On, Craftsman 19.2V C3 Ni-Cd, and those use a different socket — same brand, different rail and contacts, so they need their own adapter. Compare the rail on your battery with the photos before ordering.
Will my Kobalt 24V tool run as long on a Craftsman 20V battery?
Runtime comes from the battery, not the adapter: a 5.0Ah Craftsman 20V battery lasts roughly twice as long as a 2.5Ah one. For this pairing use 3.0 Ah or more — a smaller battery can sag under what a Kobalt 24V tool draws and cut out before it is empty.
Could this damage my Craftsman 20V battery or my Kobalt 24V tool?
Used with undamaged, compatible equipment it is not expected to. This adapter has its own Battery Management System, which cuts power before the battery is drained too far, so it protects the battery even where the battery has no protection of its own. Stop using it if the adapter becomes unusually hot, the contacts look damaged, or the tool behaves oddly.
Can I charge through the adapter?
No, and it should never be attempted. The adapter carries power one way only, out to the Kobalt 24V tool — there is no charging circuit inside it. Connecting it to a charger puts the battery, the charger and the adapter at risk. Always take the Craftsman 20V battery off the adapter and charge it on its own charger.
My Kobalt 24V gear came from Lowe's. Is that the same platform?
Yes — Lowe's is where Kobalt 24V is sold, so a battery or tool bought there is the platform this adapter is built for. What matters is the socket, and Lowe's stock is the reference for it.
Does it work with third-party Craftsman batteries?
Usually. What matters is the socket, not the badge: if the battery slides on and locks the way an original does, the adapter takes it and the Kobalt 24V tool runs. Aftermarket moulding does vary, so if yours looks unusual send us a photo and we will check before you order.
How much does it add to the Kobalt 24V tool?
145 g (5.1 oz) and a short extension between battery and tool. You notice it overhead or in a tight cabinet; on a drill or driver held normally it disappears.