Makita 18V Battery USB-C Adapter 140W PD3.1 – Digital Display
Makita 18V Battery USB-C Adapter 140W PD3.1 – Digital Display
Makita 18V Li-ion Battery to USB-C Power Adapter — 140W PD3.1 with Digital Display
Turn your Makita 18V lithium-ion tool battery into a portable power station! This compact adapter lets you charge smartphones, laptops, cameras, MP3/MP4 players, and other USB devices directly from your Makita BL-series battery — no wall outlet needed. It also works in reverse: use a USB-C PD charger to recharge the Makita battery itself. Whether you're on a job site, camping, or travelling off-grid, this bidirectional adapter keeps your devices and your battery powered up wherever you are.
Made in Mainland China.
Key Features
- Bidirectional Charging: The USB-C (Type-C) port works both ways — discharge the Makita battery to charge USB devices, or input power via USB-C PD to charge the Makita battery (replaces DC18RC charger functionality).
- 140W PD 3.1 Support: Delivers up to 140W via the Type-C port (actual power depends on cable and adapter used). USB-A port supports QC 3.0 quick charging.
- Digital Display: Built-in screen shows real-time voltage, current, and battery level so you always know the charging/discharging status at a glance.
- Secure Battery Lock: When the Makita battery is docked, the integrated clip locks it firmly in place — no risk of it falling out during use.
- Multi-Safety Protection: Overheat, short circuit, overvoltage, and overcurrent protections are all built in for worry-free operation.
- Compact & Portable: Measures just 93 × 67 × 42 mm and is lightweight enough to slip into a tool bag, backpack, or car glove box.
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Dual Output Ports:
- Output 1: USB-C (PD) — bidirectional input/output
- Output 2: USB-A (QC 3.0) — output only
Compatibility
Compatible Makita 18V Li-ion Batteries:
- BL1815, BL1820, BL1830, BL1840, BL1845, BL1850, BL1860, and similar 18V Makita Li-ion models
⚠ Important Compatibility Notes:
- This adapter does NOT support Makita "G" series batteries: BL1415G, BL1430G, BL1815G, BL1830G, or any other G-suffix models.
- This adapter does NOT include a battery or charger.
- Please verify your battery model number before purchasing. If the adapter cannot function due to battery incompatibility, the buyer is responsible.
- Actual input/output power depends on the USB cable and power adapter used — the displayed wattage may vary from test values.
- Do not block the fan air inlet during use.
Specifications
| Max Power | 140W (USB-C PD 3.1) |
| USB-C Port | Bidirectional — Input & Output (PD) |
| USB-A Port | Output only — QC 3.0 |
| Display | Digital (voltage, current, battery %) |
| Compatible Voltage | 18V Makita Li-ion batteries |
| Dimensions | 93 × 67 × 42 mm |
| Battery Included | No |
| Charger Included | No |
| Origin | Made in Mainland China |
What's in the Box?
- 1 × Battery Adapter / Converter
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Which Makita batteries are compatible with this USB-C battery adapter?
A: This adapter is compatible with Makita 18V lithium-ion batteries including BL1815, BL1820, BL1830, BL1840, BL1845, BL1850, and BL1860. It does not support Makita "G" series batteries (e.g. BL1415G, BL1830G) or batteries from other brands with different connector interfaces.
Q: Can this adapter charge my Makita battery as well as discharge it?
A: Yes! The USB-C (Type-C) port is bidirectional. Connect a USB-C PD power source (such as a 140W PD 3.1 laptop charger) to the Type-C port to charge the Makita battery. Connect your phone or other USB device to either the USB-C or USB-A port to use the Makita battery as a portable power source for discharging/charging those devices.
Q: Does this adapter come with a battery or USB-C charger?
A: No — this package includes only the adapter converter (1 piece). The Makita battery and any USB-C power adapter or cables must be sourced separately.
Q: What does the digital display show?
A: The built-in digital display shows the input/output voltage, current values for the USB ports, and an estimated battery percentage. Note that the voltage shown is the USB port value, not the battery's native voltage, and the battery percentage is calculated by the adapter's own algorithm — it may differ slightly from the indicator on the battery itself.
Q: Is this adapter safe to use?
A: Yes. The adapter features four built-in protection systems — overheat, short circuit, overvoltage, and overcurrent protection — to help ensure safe operation. Always ensure the fan air inlet is unobstructed during use for proper ventilation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.