1. Product Overview
The Solter 05090 Inverter 530 is an advanced battery charger designed for efficient and reliable battery maintenance. It incorporates inverter technology and a sophisticated 4-step charging cycle to ensure optimal battery health and performance. This manual provides essential information for the safe and effective use of your Solter Inverter 530 battery charger.

Figure 1: Solter 05090 Inverter 530 Battery Charger. This image shows the compact, grey and red unit with control buttons and indicator lights on top, and cables extending from both ends.
2. Important Safety Information
Please read and understand all safety instructions before operating the Solter 05090 Inverter 530 battery charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ventilation: Operate the charger in a well-ventilated area. Batteries can produce explosive gases.
- Eye Protection: Always wear eye protection when working near batteries.
- Gloves: Wear protective gloves to prevent contact with battery acid.
- Flammable Materials: Keep the charger and battery away from open flames, sparks, and flammable materials.
- Children and Pets: Keep the charger and battery out of reach of children and pets.
- Disconnect Power: Always disconnect the charger from the power outlet before making or breaking connections to the battery.
- Correct Voltage: Ensure the charger's output voltage matches the battery's voltage. This charger is designed for 12V batteries.
- Damaged Equipment: Do not operate the charger if it has been dropped, damaged, or if the cables are frayed.
3. Product Features
The Solter 05090 Inverter 530 battery charger offers the following key features:
- Microprocessor Controlled: Equipped with a microprocessor for precise control over the 4-step charging process.
- Wide Charging Voltage: Supports a charging voltage range of 5V to 14V.
- Battery Compatibility: Suitable for 12V lead-acid, AGM, and gel batteries.
- Dual Charging Current: Offers charging currents of 1A and 3.5A.
- Battery Condition Check: Detects battery defects and verifies battery status before and during charging.
- 4-Step Charging Cycle: Optimizes charging for battery longevity and performance.
4. Setup Instructions
Follow these steps to set up your Solter 05090 Inverter 530 battery charger:
- Placement: Place the charger on a stable, flat surface in a well-ventilated area, away from direct sunlight, heat sources, and moisture.
- Battery Preparation: Ensure the battery terminals are clean and free of corrosion. If necessary, clean them with a wire brush.
- Connect to Battery:
- Connect the red (+) charger clamp to the positive (+) battery terminal.
- Connect the black (-) charger clamp to the negative (-) battery terminal.
- Ensure connections are secure.
- Connect to Power: Plug the charger's AC power cord into a standard electrical outlet (230V AC, 50/60Hz).
- Initial Check: The charger will perform an initial battery status check. Indicator lights will show the battery's condition.
Note: If charging a battery installed in a vehicle, refer to the vehicle's owner's manual for specific instructions on disconnecting the battery or charging in-vehicle.
5. Operating Instructions
The Solter 05090 Inverter 530 utilizes a 4-step charging cycle for optimal battery care:
- Step 1: Battery Status Verification:
Upon connection, the charger automatically assesses the battery's condition, including voltage and internal resistance, to detect any defects or deep discharge states. This ensures safe and effective charging.
- Step 2: Constant Current Charge (Bulk Charge):
Once the battery status is verified, the charger begins charging with a constant current (1A or 3.5A, depending on selection/automatic detection) until the battery reaches approximately 80% of its full capacity. This is the fastest charging phase.
- Step 3: Decreasing Current Charge (Absorption Charge):
After reaching 80% capacity, the charger transitions to a decreasing current charge. The voltage is held constant while the current gradually reduces, allowing the battery to reach 100% without overcharging.
- Step 4: Constant Voltage Maintenance (Float Charge):
Once the battery is fully charged, the charger enters a maintenance mode, supplying a constant, low voltage to keep the battery at its maximum charge level. This prevents self-discharge and ensures the battery is always ready for use, without risk of overcharging.
To Start Charging: After connecting the charger to the battery and power outlet, the charging process will typically begin automatically. Monitor the indicator lights on the charger to observe the charging progress.
To Stop Charging: First, unplug the charger from the AC power outlet. Then, disconnect the black (-) clamp from the negative battery terminal, followed by the red (+) clamp from the positive battery terminal.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Solter 05090 Inverter 530 battery charger.
- Cleaning: Periodically clean the charger's exterior with a soft, dry cloth. Do not use solvents or abrasive cleaners.
- Cable Inspection: Regularly inspect the charging cables and clamps for any signs of damage, fraying, or corrosion. Replace damaged components immediately.
- Storage: When not in use, store the charger in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure cables are neatly coiled.
- Battery Terminals: Keep battery terminals clean and free of corrosion for efficient charging.
7. Troubleshooting
If you encounter issues with your Solter 05090 Inverter 530, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not turning on | No power from outlet; loose power connection; faulty charger. | Check power outlet with another device; ensure power cord is securely plugged in; contact support if charger is faulty. |
| Battery not charging | Incorrect battery connection; deeply discharged battery; faulty battery; incorrect battery type. | Verify correct polarity and secure connections; allow more time for deeply discharged batteries; test battery condition; ensure battery is 12V lead-acid, AGM, or gel. |
| Charger indicator lights not behaving as expected | Battery defect detected; charger error. | Refer to the charger's specific indicator light guide (if available); disconnect and reconnect the battery; if problem persists, the battery may be faulty or contact support. |
| Charger gets hot | Normal operation during charging; poor ventilation; excessive load. | Ensure adequate ventilation around the charger; if excessively hot or accompanied by smoke/smell, disconnect immediately and contact support. |
If the problem persists after attempting these solutions, please contact Solter customer support.
8. Technical Specifications
| Specification | Value |
|---|---|
| Brand | Solter |
| Model Number | 5090 |
| AC Input Power | Standard Mains (e.g., 230V AC, 50/60Hz) (Assumed, not explicitly detailed in source for AC input) |
| Battery Voltage (Compatible) | 12 Volts |
| Output Voltage (Charging Range) | 5V to 14V |
| Charging Current | 1A / 3.5A |
| Battery Compatibility Types | Lead-Acid, AGM, and Gel batteries |
| Charging Cycle | 4-step microprocessor controlled |
| International Article Code (EAN) | 08427338050903 |
| ASIN | B00CWKEVII |
9. Warranty and Customer Support
Solter is committed to providing high-quality products and excellent customer service. While specific warranty details are not provided in this manual, Solter offers technical after-sales support to assist customers with any challenges that may arise.
For warranty claims, technical assistance, or further inquiries, please contact Solter customer support through their official website or the retailer where the product was purchased. Please have your model number (5090) and purchase information ready when contacting support.
You can find more information about Solter and their products at www.solter.com (example link, actual link not provided in data).



