AEG 18V to Chicago Electric 18V Battery Adapter
$48.00
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AEG 18V to Chicago Electric 18V Battery Adapter
$48.00
Taxes included.
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Use your AEG 18V batteries on Chicago Electric 18V cordless tools, without buying into a second battery platform. Power passes straight through: AEG 18V and Chicago Electric 18V share the same 18V rating. The battery side is injection-molded ABS and the tool interface is high-precision 3D-printed ABS for an accurate fit, with pure copper contacts carrying the current. It is a cost-effective way to get more from the batteries you have, with no second charger to maintain.
Specifications
- SKU
- PTA-AEG18-CHI18
- Fits this battery
- AEG 18V (Lithium-Ion)
- Battery voltage
- 18V
- Runs these tools
- Chicago Electric 18V (Lithium-Ion)from Harbor Freight
- Tool voltage
- 18V
- Housing
- ABS
- Terminals
- Copper
- Current rating
- 40A continuous (80A peak at 18VDC for up to 2 seconds)
- Internal wiring
- 5 mm²
- Weight
- 138 g (4.9 oz / 0.3 lb)
- Colour
- Black, 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 deliveryMore details
Why choose this adapter
- Your AEG 18V battery and Chicago Electric 18V tools run at the same voltage, so the adapter changes the fitting rather than converting anything.
- 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.
AEG 18V and Chicago Electric 18V compatibility
It works in one direction only: AEG batteries powering Chicago Electric tools. For the opposite pairing, see adapters that run on Chicago Electric 18V 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 Chicago Electric 18V batteries.
Important charging and safety information
This adapter is for powering cordless tools and nothing else. It cannot charge AEG or Chicago Electric 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.
How it works
-
1. Use the battery you own
Any compatible AEG 18V battery you already have.
-
2. Slide on the adapter
It goes where the original Chicago Electric 18V battery sits.
-
3. Click in and work
No tools, no wiring, no modifications.
AEG 18V to Chicago Electric 18V — Common Questions
Will my Chicago Electric 18V tool run as long on a AEG 18V battery?
Runtime comes from the battery, not the adapter — a 5.0Ah AEG 18V battery lasts roughly twice as long as a 2.5Ah one, exactly as it would on its own tool. The adapter’s copper terminals and heavy-gauge wiring are there to keep resistive loss low.
Could this damage my AEG 18V battery or my Chicago Electric 18V tool?
Used with undamaged, compatible equipment it is not expected to. AEG 18V batteries are lithium-ion with a protection circuit built into the battery, and it keeps working through the adapter — it stays in the battery and never moves into the adapter. Stop when the tool slows noticeably rather than running the battery flat, and stop using the adapter if it becomes unusually hot or the contacts look damaged.
Can I charge through the adapter?
No, and it should never be attempted. The adapter carries power one way only, out to the Chicago Electric 18V 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 AEG 18V battery off the adapter and charge it on its own charger.
My Chicago Electric 18V gear came from Harbor Freight. Is that the same platform?
Yes — Harbor Freight is where Chicago Electric 18V is sold, so a battery or tool bought there is the platform this adapter is built for. What matters is the socket, and Harbor Freight stock is the reference for it.
Does it work with third-party AEG 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 Chicago Electric 18V 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 Chicago Electric 18V tool?
138 g (4.9 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.