18v quad adapter compatible with Ryobi 18v
We calculate the final price from your selected file. You review and accept it before payment.
Saved on this device.
Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Share Alike
Updated 04/07/2026 v2.3 has a notch and tabs that help with bed adhesion so the corners do not lift, these should be cut away with a knife after printing.
Allows for the use of two or four Ryobi 18v batteries to power fans, speakers, lights, and some inverters for increased runtime.
Suggested print settings:
- 0.20mm QUALITY
- Prusament PETG (pictured using OVERTURE PETG Grass Green)
- Infill density 20%
- Infill pattern Cubic
- 3 Perimeters
- Supports required
For the quad 18v adapter…
Qty.8 of Keystone 209. 1 Cell Leaf Spring Battery Contact
Qty.4 of 20A 50V Schottky Blocking Diodes …for 18v output version
…only need Qty.2 diodes when building the 40v output version
Qty.4 of M4-0.7 x 16mm Socket head cap screws
Qty.4 of M4-0.7 x 14mm Socket head cap screws
Qty.1 of Velcro or poly strap (add hot-glue to the indent underneath to secure the strap)
Qty.1 of PowerPole 45amp connector and pin set
** Screw connection is required - do NOT super-glue these parts together!
Wire the quad adapter to the part below using at least 14AWG.
If building the 18v output get from: https://www.printables.com/model/649222/files
Qty.1 of "18v battery insert"
Qty.1 of "18v battery insert clip"
Qty.1 of “Dual 18v flat w-PowerPole”
…the batteries are wired in parallel with diodes on the + terminal of each battery.
If building the 40v output version you also need to print:
Qty.1 of “40v to 18v plate 14awg wCableExit v3.4”
…two batteries are wired in series, each set is then wired in parallel with diodes on the + connection of each set.
NOTE: Always use 18v batteries that are at the same Ah rating and the same level of charge. The BMS built into all Ryobi 18v batteries will still provide a safe low voltage cut-off when the batteries are used in series or parallel to power a tool.
NOTE: Never try to charge multiple 18v Ryobi Li-Ion batteries in any charger as damage to the BMS is possible. Charge the 18v batteries individually in approved chargers.
If you need the STLs of these parts, please see:
https://www.printables.com/model/1303958
Don't have a 3D printer yet? That's OK, order already printed from…