Qoltec Smart Battery Charger AC-DC
Introduction
Thank you for choosing the Qoltec AC-DC charger. This manual provides instructions for installation and use, including important safety guidelines for correct operation and installation. If you have any questions after reading this manual, please contact our customer service.
Safety Instructions
- The apparatus is intended for indoor use only; it is forbidden to use it near flammable materials.
- Never allow sparks or flames near the batteries, as they can generate explosive gases during normal operation.
- The apparatus must only be used with its rated voltage and frequency.
- If it is necessary to route cables through walls with sharp edges, always use suitable protective sleeves or cable conduits to prevent damage to the cables.
- Do not allow children to play with the apparatus.
- Do not allow the apparatus to be submerged in water.
- Ensure that the apparatus's air intake and air outlets are free from obstructions.
- Be careful not to reverse the polarity of the battery connection.
- Do not charge batteries that are not intended to be charged.
- Disconnect the power supply before making or breaking connections to the battery.
WARNING! Risk of electric shock! Do not open the unit if it has been connected to an AC power source. This equipment has been tested according to CE standards and complies with applicable directives and standards.
OBS: Batteries undergo a wear process after many years of use. Regular maintenance of batteries is recommended (e.g., annually). After this period, batteries should be serviced by a qualified technician, as damaged batteries can otherwise cause fire or other safety risks.
Charging Instructions
1. Connecting the Charger to the Battery
Refer to Illustration 1 in the appendix for connection details.
- Set the ON/OFF switch to the OFF position.
- The mains cable must be disconnected. Connect the black cable to the terminal marked (-) on the charger's side. Connect the other end of the cable to the battery's negative terminal.
- Connect the red cable to the terminal marked (+) on the charger's side. Connect the other end of the cable to the battery's positive terminal.
2. Connecting the Charger to Power
- Connect the mains cable to the charger and to a wall socket.
- Set the ON/OFF switch to the ON position.
- The charger's front panel features a control panel with a selection of charging modes suitable for different battery types: STD, GEL, AGM, CAL, and LiFePO4. This allows the user to easily adapt the charging process to the specific battery type, ensuring optimal performance and extending battery life. Additionally, the charger is equipped with an illuminated LED indicating the current charging stage: FLOAT (trickle charge), ABS (absorption charge), or BULK (main charge).
3. Turning Off the Charger
- Disconnect the mains cable from the wall socket.
- Set the ON/OFF switch to the OFF position.
- Disconnect the charger's clamps from the battery.
Three-Step Charging
Step 1: The first step is designed to ensure maximum charging of the battery and speed up the charging cycle. The "BULK" LED lights up to indicate that the unit is delivering maximum charging current, stimulating the weak battery to absorb energy.
Step 2: When the battery reaches approximately 90% of its nominal capacity, the charger switches to the "ABSORPTION" mode. During this phase, the unit delivers a constant voltage to the battery with a reduced current.
Step 3: When 90% charge is reached, the "ABSORPTION" LED turns off, and the "FLOAT" LED turns on. In "FLOAT" mode, the charging current and charging voltage are kept constant. The battery now remains in a constant charging mode, "FLOAT".
Technical Specifications
| Model | 51955 | 51956 | 51957 | 51958 | 51959 |
|---|---|---|---|---|---|
| Input Voltage | 180-260 VAC-50Hz | ||||
| Battery Voltage | 12V | ||||
| Charging bulk/absorption | 14.2-15VDC | ||||
| Float Charging | 13.2-13.8 VDC | ||||
| LiFePO4 Charging | 14.7 V+/-0.1 VDC | ||||
| DC Output Current | 30A | 40A | 50A | 10A | 20A |
| Operating Temperature | 0-40°C | ||||
| Ventilation | Cooling fan, thermal control | ||||
| Output Ripple | <50 mA at full load | ||||
| Efficiency | 88% | ||||
| Load Control | 1.5% of output current: no load to full load | ||||
| Model | 51952 | 51953 |
|---|---|---|
| Input Voltage | 180-260 VAC-50Hz | |
| Battery Voltage | 24V | |
| Charging bulk/absorption | 28.8-29.6 VDC (AGM, GEL) 28.4-29.2 VDC (LiFePO4) | |
| Float Charging | 27.0-27.6 V (AGM, GEL) 27.2-27.6 V (LiFePO4) | |
| DC Output Current | 10A | 20A |
| Operating Temperature | 0-40°C | |
| Ventilation | Cooling fan, heat regulation | |
| Output Ripple | <50 mA at full load | |
| Efficiency | 88% | |
| Load Control | 1.5% of output current: from zero load to full load | |
| Model | 51916 | 51917 | 51918 | 51919 |
|---|---|---|---|---|
| Input Voltage | 180-260 VAC-50Hz | |||
| Battery Voltage | 12V | |||
| Charging bulk/absorption | 14.2-15VDC (selectable) | |||
| Float Charging | 13.2-13.8VDC (selectable) | |||
| LiFePO4 Charging | 14.7 V+/-0.1 VDC | |||
| DC Output Current | 60A | 70A | 80A | 90A |
| Operating Temperature | 0-40°C | |||
| Ventilation | Cooling fan, heat regulation | |||
| Output Ripple | <50 mA at full load | |||
| Efficiency | 88% | |||
| Load Control | 1.5% of output current: no load to full load | |||
Troubleshooting
| Status | Possible Cause | Suggested Action |
|---|---|---|
| No DC output or charger cannot start | No AC input | Check AC power source |
| Shutdown due to overheating | Wait for the unit to cool down | |
| Poor contact between poles | Check connection between charger and battery, connect correctly | |
| Battery pole contact or polarity reversed | Check for short circuit at output | |
| Battery charging is unstable | Defective fuse | Check the fuse |
| AC input voltage is unstable | Check AC input voltage, ensure it is within the specified range | |
| Setting does not match battery type | Input voltage | Select the correct battery type (TYP) |
| Charger cannot switch to "FLOAT" mode | Cable connected to battery pack is too thin. | Replace cable with appropriate size. |
| Battery is in poor condition. | Replace the battery with a new one. |
Maintenance
- The unit should be used in a well-ventilated area.
- Avoid charging batteries in extremely cold or hot temperatures.
- Regularly check that cables and connectors are not damaged.
Disposal
Leave the used unit at an electrical waste recycling station. Do not dispose of the unit with household waste.
Warranty
The unit is covered by a 24-month warranty from the date of purchase, which includes repair or replacement in case of manufacturing defects. Proof of purchase (receipt or invoice) is required to claim the warranty. The warranty does not cover damage caused by misuse, incorrect installation, or intervention by unauthorized personnel. If service is required, contact an authorized service workshop that can diagnose and perform repairs professionally. All service work must only be carried out by qualified personnel to maintain the unit's safety and correct function. If you have any questions regarding warranty or service, contact the customer service department.
Diagram Description
The rear panel of the charger features an AC input socket, an ON/OFF switch, and indicator lights. The AC input socket is a standard IEC connector. The ON/OFF switch is a rocker switch labeled 'ON' and 'OFF'.
