Sarrera
The GYSFLASH 8.12 is an advanced 12V battery charger designed for a wide range of vehicles, including cars, utility vehicles, motor homes, and trucks. This intelligent charger features an 8-step charging curve to ensure optimal battery performance and longevity. It also includes a "Supply" mode for maintaining showroom vehicle batteries and preserving memory settings during battery replacement.
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your GYSFLASH 8.12 battery charger.
Segurtasun-argibideak
Always read and understand all safety warnings and instructions before using the charger. Failure to do so may result in electric shock, fire, or serious injury.
- Ensure the charger is disconnected from the mains supply before making or breaking connections to the battery.
- Use the charger in a well-ventilated area. Do not operate in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Saihestu irteerako terminaletan zirkuitulaburrik.
- Protect the vehicle's on-board electronics. The GYSFLASH 8.12 includes built-in protection against short circuits, polarity reversal, and overcharging.
- This charger features anti-spark technology.
- An automatic stand-by mode activates if the battery is disconnected.
- Do not expose the charger to rain or excessive moisture. While resistant to dust and water ingress (IP65), it is not waterproof.
- Ez saiatu kargatu gabeko bateriak kargatzen.
- Mantendu haurren eskura.
Konfigurazioa eta konexioa
Follow these steps to set up and connect your GYSFLASH 8.12 battery charger:
- Bateria prestatu: Ensure the battery terminals are clean and free of corrosion. If the battery has removable caps, check the electrolyte level and top up with distilled water if necessary.
- Bateriara konektatu:
- Konektatu gorria (+) clamp from the charger to the positive (+) terminal of the battery.
- Lotu (-) cl beltzaamp from the charger to the negative (-) terminal of the battery. If connecting to a vehicle, connect the black clamp ibilgailuaren xasisera, bateriatik eta erregai-hoditik urrun.

Figure 1: Connecting the charger clamps bateria terminaletara. This image shows a user connecting the red and black clamps of the GYSFLASH 8.12 charger to the corresponding terminals of a vehicle battery, demonstrating the correct connection procedure.
- Konektatu energiara: Once the battery connections are secure, plug the charger's power cord into a suitable 230V AC electrical outlet.
- Hasierako egiaztapena: The charger will perform an initial check of the battery. The interface is simplified to prevent user error.

This image displays the GYSFLASH 8.12 charger along with its attached power cable, featuring a European plug, and the battery connection clamps (red for positive, black for negative).
Funtzionamendu-argibideak
The GYSFLASH 8.12 features an 8-step intelligent charging curve for optimal battery health and longevity. It automatically detects the battery type and condition to apply the most suitable charging process.
Kargatzeko moduak:
- Karga estandarra: For 12V batteries from 15 to 160 Ah.
- AGM modua: Specifically designed for cold weather charging (below 5°C) and for Start & Stop batteries (EFB & AGM types).
- Freskatzeko modua: Recovers deeply discharged batteries. The charger can recover batteries discharged down to 2V (SOS Recovery).
Funtzio bereziak:
- Hornidura modua: Transforms the charger into a stabilized power supply. This mode is ideal for:
- Maintaining battery health during vehicle demonstrations (showroom).
- Preserving memory settings (e.g., radio codes, ECU settings) during battery replacement.
- Optimised Maintenance Charge: The charger can remain plugged in indefinitely, especially during winter, to maintain the battery's health and readiness for use.
- Auto Restart Feature: In case of a power cut, the charger will automatically restart with the last used settings once power is restored.
Kargatzeko prozesuaren adierazleak:
The charger features intuitive indicators to show the charging progress and status. Refer to the charger's display for current information.

Irudi honek argi eta garbi erakusten du view of the GYSFLASH 8.12's front panel, highlighting its display, mode selection buttons, and LED indicators that show the charging status and selected options.

This image shows the GYSFLASH 8.12 battery charger actively connected to a car battery located in the trunk of a vehicle, demonstrating a typical usage scenario.
Mantentzea
To ensure the longevity and optimal performance of your GYSFLASH 8.12 charger, follow these maintenance guidelines:
- Garbiketa: Disconnect the charger from both the mains and the battery before cleaning. Use a soft, dry cloth to wipe the casing. Ez erabili garbitzaile edo disolbatzaile urratzailerik.
- Biltegiratzea: Kargagailua erabiltzen ez duzunean, gorde leku fresko eta lehor batean. Ziurtatu kableak ondo bilduta daudela eta ez direla tolestuta.
- Kableen ikuskapena: Regularly inspect the power cord and battery cables for any signs of damage, cuts, or fraying. Do not use the charger if cables are damaged.
- Tenperatura: The charger has an integrated temperature probe to prevent internal electronics overheating. Ensure adequate ventilation around the unit during operation.
Arazoak konpontzea
If you encounter issues with your GYSFLASH 8.12, refer to the following common problems and solutions:
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Kargagailua ez da pizten. | No power from outlet; faulty connection; internal fault. | Check mains power supply. Ensure power cord is securely plugged in. Verify battery connections. If problem persists, contact support. |
| Kargatzea ez da hasten. | Incorrect battery connection (polarity reversed); battery too deeply discharged; battery fault. | Egiaztatu bateria clamp connections for correct polarity (red to +, black to -). If battery is below 2V, the charger may not initiate. Try Refresh mode if applicable. Have battery tested by a professional. |
| Charger enters stand-by mode. | Battery disconnected during charging. | Reconnect the battery securely. The charger will automatically restart. |
| Kargagailua bero dago. | Normal operation; poor ventilation; excessive ambient temperature. | Some heat is normal. Ensure the charger is in a well-ventilated area. If it becomes excessively hot or emits smoke/smell, disconnect immediately and contact support. |
Zehaztapen Teknikoak
| Ezaugarri | Zehaztapena |
|---|---|
| Eredua | GYSFLASH 8.12 |
| Zati zenbakia | 29385 |
| Sarrera boltage | 230 Volt AC |
| Irteera boltage | 12 Volts DC |
| Karga-korrontea | 8 Amps |
| Wattage | 130 Watt |
| Battery Capacity (Charge) | 15 eta 160 Ah |
| Bateriaren edukiera (mantentze-lanak) | Gehienez 240 Ah |
| Neurriak (LxWxH) | 10 x 52 x 19 cm |
| Elementuaren pisua | 9 g |
| IP balorazioa | IP65 (Dust and water ingress resistant) |
| Jatorrizko Herrialdea | Frantzia |
Bermea eta Laguntza
For warranty information and technical support, please refer to the official GYS webwebgunera edo jarri harremanetan zure tokiko banatzailearekin. Gorde erosketa-agiria erosketaren frogagiri gisa, berme-erreklamazioetarako.
Ekoizlea: GYS