Introduction
The ProUser IBC4000 is an intelligent 4A battery charger designed for a wide range of 6V and 12V batteries. It automatically detects the battery type (Lithium or Lead-Acid) and voltage (6V or 12V). Equipped with a microprocessor, it manages an 8-stage charging process for optimal battery care. This manual provides essential information for the safe and efficient operation of your IBC4000 charger.
Important Safety Information
Please read and understand all safety instructions before using the charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Indoor Use Only: This charger is designed for indoor use. Do not expose it to rain or moisture.
- Ventilation: Ensure adequate ventilation during charging. Do not cover the charger.
- Battery Type: Use this charger only for 6V and 12V Lead-Acid (DRY, GEL, VRLA, AGM, CALCIUM, SM/MF) and 12V Lithium (LiFePO4) batteries within the specified capacity range (1.2 Ah to 120 Ah). Do not attempt to charge non-rechargeable batteries.
- Explosive Gases: Batteries can produce explosive gases during normal operation. Ensure the charging area is well-ventilated and avoid open flames or sparks.
- Eye and Skin Protection: Always wear eye protection and gloves when working with batteries. Battery acid is corrosive.
- Disconnect Power: Always disconnect the AC power from the charger before making or breaking the connections to the battery.
- Children and Pets: Keep the charger and battery out of reach of children and pets.
- Damaged Equipment: Do not operate the charger if it has been damaged in any way. Contact customer support for assistance.
Package Contents
Verify that all items are present in the package:
- ProUser IBC4000 Intelligent Battery Charger
- Crocodile Clamps (for temporary connection)
- Waterproof Connector with Eyelets (for permanent connection)
- User Manual (this document)
Product Overview
The ProUser IBC4000 features an intuitive design with an LCD screen for monitoring charging status and a mode button for selecting charging programs.

Image: Front view of the ProUser IBC4000 Intelligent Battery Charger, showing the LCD display, 4A indicator, and mode button.
Key Features:
- Automatic Detection: Automatically recognizes battery type (Lithium or Lead-Acid) and voltage (6V or 12V).
- 8-Stage Charging: Microprocessor-controlled charging for optimal battery health and longevity.
- Multiple Charging Modes: Includes modes for Motorcycle, Car, Slow Charge, and Maintenance.
- LCD Display: Provides real-time charging information.
- Cold Weather Function (GEL): Optimizes charging for cold conditions, protecting the battery.
- Desulfation Function: Repairs deeply discharged batteries.
- Versatile Connectivity: Comes with crocodile clamps and permanent eyelet connectors.
Setup
Before connecting the charger, ensure the battery terminals are clean and free of corrosion. Choose the appropriate connector for your application.
Connecting with Crocodile Clamps:
- Connect the red (+) clamp to the positive (+) battery terminal.
- Connect the black (-) clamp to the negative (-) battery terminal.
- Ensure connections are secure.
Connecting with Eyelets (Permanent Connection):
- Attach the red (+) eyelet to the positive (+) battery terminal bolt.
- Attach the black (-) eyelet to the negative (-) battery terminal bolt.
- Tighten the bolts to secure the eyelets.
- The waterproof connector allows for easy plug-in/unplug-in of the charger when needed.

Image: The ProUser IBC4000 battery charger connected to a car battery, demonstrating a typical setup.
Operating Instructions
Once the charger is securely connected to the battery, plug the charger's AC power cord into a standard wall outlet. The charger will automatically begin its diagnostic and charging process.
Automatic Battery Detection:
The IBC4000 will automatically detect if the connected battery is 6V or 12V and if it is a Lead-Acid or Lithium (LiFePO4) type. The LCD screen will display the detected voltage and battery type.
Selecting Charging Modes:
Press the MODE button to cycle through the available charging programs. The LCD screen will indicate the selected mode.
- Motorcycle Mode: Optimized for smaller 6V/12V motorcycle batteries.
- Car Mode: Standard charging for 12V car batteries.
- Slow Charge Mode: For a gentler, longer charge cycle, suitable for smaller batteries or maintenance.
- Maintenance Mode: Keeps a fully charged battery at optimal levels, preventing self-discharge.
- Cold Weather (GEL) Mode: Activates automatically or can be selected for charging in cold environments to protect GEL batteries.
Charging Process:
The charger utilizes an 8-stage charging process, which includes desulfation, soft start, bulk charge, absorption, analysis, recondition, float, and pulse maintenance. The LCD screen will show the current charging stage and battery status.
When the battery is fully charged, the charger will automatically switch to maintenance mode to prevent overcharging.
Disconnecting the Charger:
- Unplug the AC power cord from the wall outlet.
- Disconnect the negative (-) clamp/eyelet from the battery.
- Disconnect the positive (+) clamp/eyelet from the battery.
Maintenance
Proper maintenance ensures the longevity of your charger and optimal battery performance.
- Cleaning: Disconnect the charger from all power sources before cleaning. Wipe the exterior with a soft, damp cloth. Do not use harsh chemicals or abrasives.
- Storage: Store the charger in a cool, dry place when not in use. Keep cables neatly coiled.
- Cable Inspection: Regularly inspect the charging cables and connectors for any signs of damage, cracks, or corrosion. Do not use if damaged.
- Battery Care: For optimal battery life, ensure batteries are kept charged, especially during long periods of inactivity.
Troubleshooting
If you encounter issues with your ProUser IBC4000 charger, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger does not turn on. | No AC power; faulty outlet; damaged charger. | Check AC power connection and outlet. Try a different outlet. If still no power, contact support. |
| Charger not charging battery. | Incorrect battery connection; battery voltage too low; battery is faulty. | Ensure correct polarity (+ to +, - to -). Check battery voltage; if extremely low, the desulfation function may activate, or the battery might be beyond recovery. Test battery with a different device. |
| LCD displays an error code. | Short circuit; reverse polarity; internal fault. | Disconnect charger immediately. Check connections for short circuits or reverse polarity. Reconnect correctly. If error persists, contact support. |
| Charger gets warm during operation. | Normal operation; poor ventilation. | Some warmth is normal. Ensure the charger is in a well-ventilated area and not covered. If it becomes excessively hot, disconnect and contact support. |
Specifications
Technical details for the ProUser IBC4000 Intelligent Battery Charger:
| Specification | Detail |
|---|---|
| Brand | Pro User |
| Model Number | 18171 (IBC4000) |
| Input Voltage | 12 Volts (AC, for charger operation) |
| Output Voltage | 6 Volts / 12 Volts (DC) |
| Charging Current | 4 Amperes (A) |
| Compatible Battery Types | 12V LITHIUM (LiFePO4), 6V & 12V LEAD-ACID (DRY, GEL, VRLA, AGM, CALCIUM, SM/MF) |
| Battery Capacity Range | 1.2 Ah to 120 Ah |
| Charging Stages | 8-stage automatic charging |
| Connector Type | Crocodile Clamps, Waterproof Connector with Eyelets |
| Color | Black |
| Manufacturer | Pro-User Europe GmbH |
| Country of Origin | China |
Warranty and Support
The ProUser IBC4000 battery charger comes with a warranty for spare parts for 1 year from the date of purchase. For warranty claims or technical support, please contact your retailer or the manufacturer directly.
For further assistance, please visit the official ProUser website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty purposes.





