Qoltec
Instruction Manual
Smart Charger for Batteries AC-DC
Models: 51916/51917/51918/51919/51952/51953/51955/51956/51957/51958/51959
Introduction
Thank you for your trust and for choosing the Qoltec AC-DC charger firm. We are confident that the product will meet your expectations. This manual contains instructions for installing and using the product, including important safety instructions for correct operation and installation. If you have any questions after reading this manual, please contact our Customer Service Department.
Safety Instructions
- The appliance is intended for indoor use, it is forbidden to use it near flammable materials.
- Never allow sparks or flames near the batteries as they may generate explosive gases during normal operation.
- The appliance must only be used at its rated voltage and frequency.
- If it is necessary to run cables through walls with sharp edges, always use suitable protective sleeves or cable ducts to prevent damage to the cables.
- Do not allow children to play with the appliance.
- Do not allow the appliance to be flooded with water.
- Ensure that the air inlets and outlets of the appliance remain clear of any obstructions.
- Be careful not to reverse the polarity of the battery connection.
- Do not charge batteries that are not designed to be recharged.
- Disconnect the power supply before making or breaking connections to the battery.
WARNING!
Risk of electric shock! Do not open the device if it has been connected to an AC power source. This appliance has been tested to CE standards and complies with the applicable directives and standards.
NOTE
Batteries undergo a process of wear and tear after many years of use. Regular maintenance of the battery is recommended (e.g. every year). After this time, the batteries should be serviced by a qualified technician, otherwise damaged batteries may cause fire or other safety hazards.
Charging Instructions
1. Connecting the charger to the battery
Illustration 1 shows the rear panel of the charger. It features an "AC IN" socket for power connection and an ON/OFF rocker switch.
- Set the ON/OFF switch to the OFF position.
- The AC power cord must be disconnected. Connect the black cable to the terminal marked (-) on the charger side. Connect the other end of the cable to the negative terminal of the battery.
- Connect the red cable to the terminal marked (+) on the charger side. Connect the other end of the cable to the positive terminal of the battery.
2. Switching on the charger
- Connect the AC power cord to the charger and AC outlet.
- Set the ON/OFF switch to the ON position.
- On the front panel of the charger there is a control panel with a selection of charging modes suitable for different battery types: STD, GEL, AGM, CAL and LIFEPO4. This makes it easy for the user to adapt the charging process to the specific battery type, ensuring optimal performance and extending battery life. In addition, the charger is equipped with a luminous LED that indicates the current charging stage: FLOAT (holding charge), ABS (absorption charge) or BULK (main charge).
3. Switching off the charger
- Disconnect the AC power cord from the AC socket.
- Set the ON/OFF switch to the OFF position.
- Disconnect the charger clamps connected to the battery.
Three-Stage Charging
- Stage 1: The first stage is designed to ensure maximum charge of the battery, speeding up the charging cycle. The "BULK" LED lights up to indicate that the unit is delivering maximum charge current, stimulating the weak battery to absorb energy.
- Stage 2: When the battery reaches approximately 90% of its rated capacity, the charger will enter "ABSORPTION" mode. During this stage, the unit delivers a constant voltage to the battery at a reduced current.
- Stage 3: When 90% charge is reached, the "ABSORPTION" LED will turn off and the "FLOAT" LED will light up. In "FLOAT" mode, the charging current will be reduced and the charging voltage will be held constant. The battery now remains in the constant charging mode "FLOAT".
Technical Specifications
Models: 51955, 51956, 51957, 51958, 51959
| Parameter | 51955 | 51956 | 51957 | 51958 | 51959 |
|---|---|---|---|---|---|
| Input voltage | 180-260 VAC-50Hz | 180-260 VAC-50Hz | 180-260 VAC-50Hz | 180-260 VAC-50Hz | 180-260 VAC-50Hz |
| Battery voltage | 12V | 12V | 12V | 12V | 12V |
| Charging bulk/absorption | 14.2-15VDC | 14.2-15VDC | 14.2-15VDC | 14.2-15VDC | 14.2-15VDC |
| Float charge | 13.2-13.8VDC | 13.2-13.8VDC | 13.2-13.8VDC | 13.2-13.8VDC | 13.2-13.8VDC |
| LiFePO4 charging | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC |
| DC output current | 30A | 40A | 50A | 10A | 20A |
| Operating temperature | 0-40°C | 0-40°C | 0-40°C | 0-40°C | 0-40°C |
| Ventilation | Cooling fan, thermal control | Cooling fan, thermal control | Cooling fan, thermal control | Cooling fan, thermal control | Cooling fan, thermal control |
| Output ripple | <50 mA at full load | <50 mA at full load | <50 mA at full load | <50 mA at full load | <50 mA at full load |
| Efficiency | 88% | 88% | 88% | 88% | 88% |
| Load control | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load |
Models: 51952, 51953
| Parameter | 51952 | 51953 |
|---|---|---|
| Input voltage | 180-260 VAC-50Hz | 180-260 VAC-50Hz |
| Battery voltage | 24V | 24V |
| Charging bulk/absorption | 28.8-29.6VDC (AGM, GEL) | 28.8-29.6VDC (AGM, GEL) |
| 28.4-29.2VDC (LiFePO4) | 28.4-29.2VDC (LiFePO4) | |
| Float charging | 27.0-27.6 V (AGM, GEL) | 27.0-27.6 V (AGM, GEL) |
| 27.2-27.6 V (LiFePO4) | 27.2-27.6 V (LiFePO4) | |
| DC output current | 10A | 20A |
| Operating temperature | 0-40°C | 0-40°C |
| Ventilation | Cooling fan, thermal control | Cooling fan, thermal control |
| Output ripple | <50 mA at full load | <50 mA at full load |
| Efficiency | 88% | 88% |
| Load control | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load |
Models: 51916, 51917, 51918, 51919
| Parameter | 51916 | 51917 | 51918 | 51919 |
|---|---|---|---|---|
| Input voltage | 180-260 VAC-50Hz | 180-260 VAC-50Hz | 180-260 VAC-50Hz | 180-260 VAC-50Hz |
| Battery voltage | 12V | 12V | 12V | 12V |
| Charging bulk/absorption | 14.2-15VDC (selectable) | 14.2-15VDC (selectable) | 14.2-15VDC (selectable) | 14.2-15VDC (selectable) |
| Float charging | 13.2-13.8VDC (selectable) | 13.2-13.8VDC (selectable) | 13.2-13.8VDC (selectable) | 13.2-13.8VDC (selectable) |
| LiFePO4 charging | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC | 14.7 V+/-0.1 VDC |
| DC output current | 60A | 70A | 80A | 90A |
| Operating temperature | 0-40°C | 0-40°C | 0-40°C | 0-40°C |
| Ventilation | Cooling fan, thermal control | Cooling fan, thermal control | Cooling fan, thermal control | Cooling fan, thermal control |
| Output ripple | <50 mA at full load | <50 mA at full load | <50 mA at full load | <50 mA at full load |
| Efficiency | 88% | 88% | 88% | 88% |
| Load control | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load | 1.5% at output current: no load to full load |
Troubleshooting
| Status | Possible cause | Suggest a remedy |
|---|---|---|
| No DC output or charger cannot start | No AC input | Check power source AC |
| Shutdown due to overheating | Wait for unit to cools down | |
| Bad terminal contact | Check connection | |
| Battery terminal contact between charger and battery or polarity reversed | Connect correctly battery | |
| Short circuit in the output | ||
| Battery charging is not stable | Defective fuse | Check the fuse |
| AC input voltage is not stable | Check AC input voltage, if within range input voltage | |
| Setting does not match battery type | Select the correct battery TYPE | |
| Charger cannot switch to "FLOAT" mode | Cable connected to Battery pack is too thin. | Change the cable to the correct size. |
| Battery in bad 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 high temperatures.
- Check cables and connectors regularly for damage.
Disposal
Take the used device to an electro-waste collection point. Do not dispose of the device with municipal waste.
Warranty
The device is covered by a 24-month warranty from the date of purchase, which includes repair or replacement in the event of manufacturing defects. Proof of purchase (receipt or invoice) is required to make use of the guarantee. The warranty does not cover damage resulting from misuse, incorrect installation or interference by unauthorised persons. If service is required, contact an authorised service centre, which will provide professional diagnosis and repair. All service work should only be carried out by qualified personnel to maintain the safety and proper functioning of the appliance. If you have any questions about the warranty or servicing, please contact the customer service department.
