1. Product Overview
The DATAKOM BC-4A-P is an advanced, auto-selecting battery charger designed for 12V and 24V systems. It features high efficiency, a wide operating voltage range, and various protection mechanisms to ensure reliable and safe battery charging. Its compact, DIN rail-mounted design makes it suitable for various industrial and commercial applications.
Key Features:
- Very high efficiency, up to 92.4%
- Wide operating voltage range (170-305VAC)
- LED status indicator for operational feedback
- Low power consumption at no-load mode (Green mode operation)
- Output short circuit and overload protection
- High temperature protection
- 2-stage charging for continuous connection
- Rectifier fail output for system monitoring
- Wide operating temperature range
- Low output ripple & noise
- Low line and load regulations
- DIN rail mounted, small dimensions, and low weight
2. What's in the Box
Upon opening the package, you should find the following items:
- 1 x DATAKOM BC-4A-P Battery Charger
- Instruction Manual (this document)
Video: Unboxing and 360-degree view of the BC-4A-P battery charger.
3. Setup and Installation
The BC-4A-P charger is designed for DIN rail mounting. Ensure proper ventilation around the unit for optimal performance.
3.1 Mounting
- Select a suitable location on a standard DIN rail within an enclosure, ensuring it is free from excessive vibration, moisture, and extreme temperatures.
- Clip the charger onto the DIN rail securely.
3.2 Wiring Connections
Refer to the terminal labels on the front of the unit for correct wiring. Always ensure power is disconnected before making any connections.

Image: Front view of the BC-4A-P charger, showing input/output terminals and specifications.
| Terminal No. | Label | Description |
|---|---|---|
| 1 | PHS | AC Input Phase |
| 2 | NTR | AC Input Neutral |
| 3 | FAIL | Rectifier Fail Output (Signal) |
| 4 | + | DC Output Positive |
| 5 | - | DC Output Negative |
Connect the AC input (170-305VAC, 45-68Hz) to terminals 1 (PHS) and 2 (NTR). Connect the battery to be charged to terminals 4 (+) and 5 (-), ensuring correct polarity. The charger will automatically detect if it's a 12V or 24V battery.
4. Operating Instructions
Once properly installed and wired, the BC-4A-P operates automatically.
- Power On: Apply AC power to the input terminals (1 PHS, 2 NTR).
- Battery Detection: The charger will automatically detect the connected battery voltage (12V or 24V).
- Charging Process: The charger employs a 2-stage charging process suitable for continuous connection, ensuring optimal battery health and longevity.
- Status Indicator: Monitor the LED status indicator on the unit for operational feedback. (Specific LED indications are not detailed in provided data, refer to product label if available).
- Rectifier Fail Output: Terminal 3 (FAIL) provides a signal in case of a rectifier failure, allowing for integration with external monitoring systems.
5. Maintenance
The DATAKOM BC-4A-P battery charger is designed for minimal maintenance. Follow these guidelines to ensure long-term performance:
- Keep the unit clean and free from dust and debris.
- Ensure adequate ventilation around the charger to prevent overheating.
- Periodically check all wiring connections for tightness and signs of corrosion.
- Do not expose the unit to direct moisture or corrosive environments.
6. Troubleshooting
The BC-4A-P includes built-in protection features. If the unit is not functioning as expected, consider the following:
- No Output/No Charging: Check the AC input power supply. Verify that the input voltage is within the specified range (170-305VAC). Ensure all battery connections are secure and correctly polarized.
- Overload/Short Circuit: The charger has output short circuit and overload protection. If an overload or short circuit occurs, the unit may temporarily cease charging. Remove the fault condition and the charger should resume normal operation.
- Overheating: The charger features high temperature protection. If the unit becomes excessively hot, it may reduce output or shut down to prevent damage. Ensure proper ventilation and ambient temperature are within the operating range.
- Rectifier Fail Output (Terminal 3): If this output is active, it indicates an internal fault with the rectifier. In this case, contact support.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | BC-4A-P |
| Input Voltage Range | 170-305VAC |
| Input Frequency | 45-68Hz |
| Output Voltage | 12V/24V (Auto Select) |
| Output Current | 4A |
| Max Power Output | 125W |
| Efficiency | Up to 92.4% |
| Mounting | DIN Rail |
| Origin | Mainland China |
| High-concerned chemical | None |
8. User Tips
- Always ensure the charger is installed in a well-ventilated area to maximize its lifespan and maintain optimal operating temperature.
- Double-check battery polarity before connecting to prevent damage to the charger or battery.
- For continuous charging applications, the 2-stage charging feature helps maintain battery health without overcharging.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller, Oman Parts Factory Store, directly through the platform where the product was purchased. Provide your order details and the product model number (BC-4A-P) for efficient assistance.