1. Product Overview
The Kircuit 20V Max Battery Adapter is designed to provide reliable power for charging and operating various compatible devices. This adapter converts standard AC power from electrical outlets into the DC power required by your equipment. It serves as a portable and efficient power source for use at home, in the office, or on the go.

Image 1: Front view of the Kircuit 20V Max Battery Adapter, displaying its branding and electrical specifications.
Compatible Devices:
- AstroAI 20V Cordless Tire Inflator Air Compressor: Models JY16P160-18, ACJY3PYE, ACJY3PBU, ACJY21LIDC.
- AUTDER Cordless Tire Inflator Air Compressor: Model AD380.
- AOBEN Cordless High Torque Impact Wrench: Models AB7335, AB7336, AB7377.
- SeeSii Brushless Cordless High Torque Power Impact Wrench: Models WH700, WH710.
- SeeSii Electric Mini Cordless Chainsaw: Models SE01, SE02, SY18-US-LW0309MG, LW0291LMG.
- SeeSii Electric Ratchet Wrench: Model RT700.
The adapter features a total power cord length of 6.5 feet, providing flexibility in placement.
2. Setup Instructions
Follow these steps to properly set up your Kircuit 20V Max Battery Adapter:
- Inspect the Adapter: Before use, visually inspect the adapter and its cord for any signs of damage, such as cuts, frayed wires, or bent pins. Do not use if damaged.
- Connect to Device: Insert the barrel connector of the adapter firmly into the power input port of your compatible device. Ensure a secure connection.
- Connect to Power Outlet: Plug the AC plug of the adapter into a standard 100-240V AC electrical wall outlet. Ensure the outlet is easily accessible and not overloaded.
- Verify Connection: Once connected, your device should begin charging or power on, depending on its design.

Image 2: The Kircuit adapter connected to a power strip, demonstrating a typical setup.
Safety Precautions:
- Use only with specified compatible devices.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid placing the adapter in poorly ventilated areas during operation.
- Unplug the adapter from the wall outlet when not in use for extended periods.
3. Operating Instructions
The Kircuit 20V Max Battery Adapter is designed for straightforward operation:
- Charging: Once properly connected to both the device and a power outlet, the adapter will automatically begin charging your device's battery. Refer to your device's manual for specific charging indicators (e.g., LED lights).
- Direct Power: For devices that can operate directly from AC power, the adapter will supply continuous power as long as it is connected and plugged into an active outlet.
- Monitoring: Periodically check the device's charging status. Disconnect the adapter once charging is complete to conserve energy and prolong adapter lifespan.
4. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your adapter:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or abrasive materials.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Avoid tightly winding the cord to prevent damage.
- Handling: Always grasp the plug when disconnecting from an outlet; do not pull on the cord. Avoid bending or crimping the power cord excessively.
5. Troubleshooting
If you encounter issues with your Kircuit 20V Max Battery Adapter, try the following solutions:
- Device Not Charging/Powering On:
- Ensure the adapter is securely plugged into both the device and the wall outlet.
- Test the wall outlet with another device to confirm it is functional.
- Verify that your device is listed as compatible with this adapter.
- Check the adapter cord and connector for any visible damage.
- Adapter Feels Warm:
- It is normal for adapters to become slightly warm during operation. If it feels excessively hot, disconnect it immediately and ensure it is in a well-ventilated area.
- Ensure the adapter is not covered or obstructed, which could lead to overheating.
If problems persist after attempting these steps, discontinue use and contact the seller for further assistance.
6. Specifications

Image 3: The Kircuit adapter showcasing its integrated power cord, measuring 6.5 feet in length.
| Feature | Detail |
|---|---|
| Brand | Kircuit |
| Manufacturer | Shenzhen Waweis Technology Co., Ltd |
| Input Voltage | 100-240 Volts (AC) |
| Output | 20V, 0.3A |
| Connector Type | Barrel |
| Power Source | Corded Electric |
| Color | Black |
| Cord Length | 6.5 feet (approx. 1.98 meters) |
| Special Feature | High Quality AC/DC Power Charger (non-OEM) |
7. Warranty and Returns
This Kircuit adapter is a high-quality replacement power supply designed to meet the power needs of your compatible devices. While specific warranty details are not provided, the product is typically covered by standard return policies.
Return Policy: This product is eligible for a return/replacement within 30 days of purchase. Please refer to the retailer's specific return policy for detailed instructions and conditions.
8. Support
For further assistance, technical support, or inquiries regarding your Kircuit 20V Max Battery Adapter, please contact the seller or manufacturer directly through the platform where the product was purchased. Ensure you have your purchase details readily available.