1. Overview
The SmartGen BAC1203VE is a 12V 3A battery charger designed for long-term float charging of lead-acid engine starter batteries. It incorporates an up-to-date power supply device and is specifically engineered to meet the charging characteristics required for optimal battery health and longevity. This manual provides detailed instructions for the installation, operation, and maintenance of the BAC1203VE Battery Charger.
Figure 1.1: Front view of the SmartGen BAC1203VE Battery Charger, showing input/output specifications, terminal labels (B+, B-, PE, N, L), and LED indicators for Power and Charging.
2. Product Features and Characteristics
- Switch Power Supply Structure: Features a wide input voltage range, compact size, light weight, and high efficiency.
- Automatic Two-Stage Charging: Implements a two-stage charging process (constant current followed by constant voltage) to prevent overcharging and significantly extend battery lifespan.
- Built-in Protection: Includes a current protective circuit for short-circuit protection.
- Stabilized DC Power Supply: Can also function as a stabilized DC power supply.
- Permanent Connection Design: Designed for permanent connection to generator starter batteries.
- Overload and Short Circuit Protection: Ensures protection to prevent disconnection during engine cranking.
- Isolated Device Case: Allows for a phase-to-phase 170-270V AC connection.
- LED Display: Provides clear indications for power status and charging activity.
3. Setup and Installation
3.1 Physical Installation
The BAC1203VE charger is designed for DIN rail mounting. Ensure the mounting location is secure, well-ventilated, and free from excessive moisture or extreme temperatures. Refer to the dimensions and mounting diagrams for proper installation.
Figure 3.1: Side view of the charger, illustrating the integrated orange DIN rail mounting clip for easy installation onto standard DIN rails.
Figure 3.2: Technical diagrams detailing the dimensions for both DIN rail guide-rail installation and screw fixed installation methods for the BAC1203VE charger.
3.2 Electrical Connections
Connect the charger according to the terminal labels provided on the unit. Ensure all connections are secure and comply with local electrical codes. The input voltage range is AC 100-277V at 50/60Hz, and the output is +12V DC at 3A.
- B+: Positive terminal for battery connection.
- B-: Negative terminal for battery connection.
- PE: Protective Earth ground connection.
- N: Neutral terminal for AC input.
- L: Live/Phase terminal for AC input.
Figure 3.3: Angled view of the charger, clearly showing the terminal connection points labeled 1 through 5 for B+, B-, PE, N, and L respectively.
4. Operation
4.1 Charging Principle
The BAC1203VE employs an automatic two-stage charging process to optimize battery charging and extend its life. This process involves:
- Constant Current Stage: Initially, the charger delivers a constant current until the battery voltage reaches a pre-set value.
- Constant Voltage (Float) Stage: Once the pre-set voltage is reached, the charger switches to a constant voltage mode, reducing the current to maintain the battery at a full charge without overcharging. This float charge ensures the battery remains fully charged and ready for use.
Figure 4.1: A charging curve diagram illustrating the two-stage charging principle, showing the battery current and voltage behavior over time during the charging process.
4.2 LED Indicators
- Power LED (Green): Illuminates when the charger is receiving input power.
- Charging LED (Red): Illuminates when the battery is actively being charged. It may turn off or change intensity during the float stage, indicating the battery is fully charged or in maintenance mode.
5. Specifications
The following table details the technical specifications of the SmartGen BAC1203VE Battery Charger:
Figure 5.1: A detailed table outlining the parameters and specifications of the BAC1203VE charger, including input/output characteristics, insulating properties, and operating conditions.
| Category | Item | Specification |
|---|---|---|
| Input Characteristics | Nominal AC Voltage | AC (100-277)V |
| Max. AC Voltage | AC (90-305)V | |
| Max. Input Current | 1A | |
| No-load Power Used | <3W | |
| AC Frequency | 45Hz~65Hz | |
| Max. Working Efficiency | 87% | |
| Output Characteristics | No-load Output Voltage | 13.8V (Error±2%) |
| Rated Charging Current | 3A (Error±5%) | |
| Max. Output Power | 40W | |
| Insulating Property | Insulation Resistance | Between input and output, input and shell both are: AC3kV, and in 1min R≥50MΩ |
| Leakage Current | Between input and output, input and PE both are: AC3kV, and in 1min leakage current: IL≤3.5mA | |
| Working Conditions | Working Temperature | (-30°C~+55°C) |
| Storage Temperature | (-40°C~+85°C) | |
| Working Humidity | 20%RH~93%RH (No condensation) | |
| Shape Structure | Weight | 0.15kg |
| Dimension | 80mm×35.5mm×65mm (length×width×height) |
6. Maintenance
To ensure optimal performance and longevity of your SmartGen BAC1203VE Battery Charger, follow these general maintenance guidelines:
- Keep Clean: Periodically clean the exterior of the charger with a dry, soft cloth. Avoid using harsh chemicals or abrasive materials.
- Check Connections: Regularly inspect all electrical connections (input and output) to ensure they are tight and free from corrosion. Loose connections can lead to poor performance or damage.
- Ensure Ventilation: Verify that the charger's ventilation grilles are not obstructed to allow for proper heat dissipation. Adequate airflow is crucial for preventing overheating.
- Environmental Conditions: Operate the charger within the specified working temperature and humidity ranges to prevent damage.
7. Troubleshooting
If you encounter issues with your BAC1203VE charger, consider the following basic troubleshooting steps:
- No Power Indicator: Check the AC input power supply. Ensure the power cord is securely connected and the power source is active.
- No Charging Indicator: Verify that the battery is properly connected to the charger's output terminals (B+ and B-). Ensure the battery voltage is within the acceptable range for charging.
- Slow Charging: Confirm that the battery type and capacity are suitable for a 3A charger. Extremely discharged batteries may take longer to charge.
- Overload/Short Circuit: If the charger stops functioning, check for any short circuits in the wiring or an overloaded condition. The built-in protection should prevent damage, but the issue needs to be resolved before resuming operation.
If problems persist after performing these checks, contact SmartGen customer support for further assistance.
8. Warranty and Support
For information regarding product warranty, technical support, or service, please contact SmartGen directly through their official channels. Keep your purchase receipt and product model number (BAC1203VE) available when seeking support.
