Hikoki 18V to Ryobi 18V Battery Adapter

Hikoki 18V to Ryobi 18V Battery Adapter

236,00 kr
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Hikoki 18V to Ryobi 18V Battery Adapter

Hikoki 18V to Ryobi 18V Battery Adapter

236,00 kr
Taxes included.

kr 23.00 Shipping to DenmarkZero customs fees. Zero surprise taxes.

Use your Hikoki 18V batteries on Ryobi 18V ONE+ cordless tools, without buying into a second battery platform. Both run at 18V, so the adapter changes the fitting and not the voltage. 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-HIK18-RYO18
Fits this battery
Hikoki 18V (Lithium-Ion)
Battery voltage
18V
Runs these tools
Ryobi 18V ONE+ (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
132 g (4.7 oz / 0.29 lb)
Colour
Black, Green
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
Revision
Revision 01 (released on October 9, 2025)

Why choose this adapter

  • Your Hikoki 18V battery and Ryobi 18V ONE+ 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.

Hikoki 18V and Ryobi 18V ONE+ compatibility

It works in one direction only: Hikoki batteries powering Ryobi tools. For the opposite pairing, see adapters that run on Ryobi 18V ONE+ batteries.

Compatibility can vary with the exact battery and tool model. Before ordering, confirm that your battery belongs to the Hikoki 18V platform and that your tool takes Ryobi 18V ONE+ batteries.

Important charging and safety information

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

How it works

  1. 1. Use the battery you own

    Any compatible Hikoki 18V battery you already have.

  2. 2. Slide on the adapter

    It goes where the original Ryobi 18V ONE+ battery sits.

  3. 3. Click in and work

    No tools, no wiring, no modifications.

Hikoki 18V to Ryobi 18V ONE+ — Common Questions

Will my Ryobi 18V ONE+ tool run as long on a Hikoki 18V battery?

Runtime comes from the battery, not the adapter — a 5.0Ah Hikoki 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 Hikoki 18V battery or my Ryobi 18V ONE+ tool?

Used with undamaged, compatible equipment it is not expected to. Hikoki 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 Ryobi 18V ONE+ 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 Hikoki 18V battery off the adapter and charge it on its own charger.

Does it work with third-party Hikoki 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 Ryobi 18V ONE+ 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 Ryobi 18V ONE+ tool?

132 g (4.7 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.

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