1. Introduction
This manual provides detailed instructions for the safe and efficient operation of the MEAN WELL ENC-240-12 AC/DC Programmable Desktop Battery Charger. This device is designed to provide a stable and programmable power source for charging various battery types. Please read this manual thoroughly before using the product to ensure proper function and to prevent damage or injury.
2. Safety Instructions
Always observe the following safety precautions to reduce the risk of electric shock, fire, or injury:
- Read all instructions carefully before operating the charger.
- Do not expose the charger to rain, moisture, or extreme temperatures.
- Ensure adequate ventilation around the charger during operation to prevent overheating.
- Use only with compatible battery types and voltage ratings as specified by the battery manufacturer.
- Disconnect the AC power cord from the outlet before performing any cleaning or maintenance.
- Do not attempt to open or modify the charger. Refer all servicing to qualified personnel.
- Keep out of reach of children.
3. Package Contents
Verify that all items are present in the package:
- 1 x MEAN WELL ENC-240-12 Programmable Desktop Battery Charger
- 1 x AC Power Cord
- 1 x User Manual (this document)
4. Product Features
The MEAN WELL ENC-240-12 charger offers the following key features:
- Type: Desktop AC/DC Battery Charger
- Output: Single Output
- Output Power: 240 Watts
- Output Voltage: 14.4 Volts DC
- Input Voltage: 90 to 264 Volts AC
- Programmable Functionality: Allows for customization of charging parameters.
5. Setup
Follow these steps to set up your ENC-240-12 charger:
- Unpack the Charger: Carefully remove the charger and all accessories from the packaging. Inspect for any signs of damage.
- Placement: Place the charger on a stable, flat surface with adequate ventilation. Ensure that the ventilation grilles are not obstructed.
- Connect to Battery: Connect the DC output cable from the charger to the battery terminals. Ensure correct polarity (positive to positive, negative to negative).
- Connect AC Power: Plug the AC power cord into the charger's AC input port, then plug the other end into a standard wall outlet (90-264V AC).
- Initial Check: Observe the indicator lights on the charger. Refer to the Operating Instructions section for details on LED status.

An overhead view of the MEAN WELL ENC-240-12 desktop battery charger, showing its compact black casing and ventilation grilles. This image illustrates the physical appearance of the device.
6. Operating Instructions
Once the charger is set up, follow these steps for operation:
- Power On: After connecting both the battery and AC power, the charger will typically power on automatically.
- Charging Process: The charger will begin the charging cycle. Monitor the indicator lights for status updates. Common indicators include:
- Green LED: Indicates full charge or standby.
- Red/Orange LED: Indicates charging in progress.
- Flashing LED: May indicate an error or specific charging stage. Consult the detailed specification sheet for precise LED behavior.
- Programmable Features: The ENC-240-12 series offers programmable charging curves. For detailed instructions on how to program the charger, refer to the specific programming guide or technical documentation available from MEAN WELL. This typically involves connecting to a computer and using proprietary software.
- Disconnecting: Once charging is complete (indicated by the LED status), first disconnect the AC power cord from the wall outlet, then disconnect the DC output cable from the battery.
7. Maintenance
Proper maintenance ensures the longevity and reliable operation of your charger:
- Cleaning: Disconnect the charger from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Ventilation: Regularly check that the ventilation grilles are free from dust and debris. Use compressed air if necessary to clear blockages.
- Storage: When not in use, store the charger in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cable Inspection: Periodically inspect the AC power cord and DC output cables for any signs of damage, fraying, or exposed wires. Replace damaged cables immediately.
8. Troubleshooting
If you encounter issues with your ENC-240-12 charger, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on | No AC power; Faulty power cord; Outlet issue. | Check AC power connection; Try a different outlet; Inspect power cord for damage. |
| Battery not charging | Incorrect battery connection; Battery fault; Charger fault. | Verify correct polarity (+ to +, - to -); Ensure secure connection; Test battery with another charger if possible. |
| Overheating | Poor ventilation; Overload. | Ensure clear airflow around the charger; Reduce load if possible; Disconnect and allow to cool. |
If the problem persists after attempting these solutions, contact customer support.
9. Specifications
Detailed technical specifications for the MEAN WELL ENC-240-12 charger:
- Model: ENC-240-12
- Brand: MEAN WELL
- Input Voltage: 90 to 264 V AC
- Output Voltage: 14.4 V DC
- Output Current: 16 A
- Output Power: 230.4 W (240 W nominal)
- Type: Desktop AC/DC Programmable Battery Charger
- Number of Outputs: Single
- Item Weight: 2.67 Pounds
- Date First Available: July 26, 2017
10. Warranty and Support
For warranty information, technical assistance, or to inquire about replacement parts, please contact MEAN WELL customer service directly or visit their official website. Keep your purchase receipt as proof of purchase for warranty claims.





