Invoering
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.
Veiligheidsinstructies
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.
- Gebruik de lader in een goed geventileerde ruimte. Gebruik de lader niet in explosieve atmosferen, zoals in de aanwezigheid van brandbare vloeistoffen, gassen of stof.
- Voorkom kortsluiting van de uitgangsklemmen.
- 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.
- Probeer geen niet-oplaadbare batterijen op te laden.
- Buiten bereik van kinderen houden.
Installatie en verbinding
Follow these steps to set up and connect your GYSFLASH 8.12 battery charger:
- De batterij voorbereiden: 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.
- Aansluiten op de batterij:
- Verbind de rode (+) clamp van de oplader naar de positieve (+) pool van de batterij.
- Sluit de zwarte (-) cl . aanamp from the charger to the negative (-) terminal of the battery. If connecting to a vehicle, connect the black clamp naar het chassis van het voertuig, uit de buurt van de accu en de brandstofleiding.

Figure 1: Connecting the charger clamps naar de accupolen. 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.
- Aansluiten op stroom: Once the battery connections are secure, plug the charger's power cord into a suitable 230V AC electrical outlet.
- Eerste controle: 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 (rood voor positief, zwart voor negatief).
Gebruiksaanwijzing
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.
Oplaadmodes:
- Standaard kosten: For 12V batteries from 15 to 160 Ah.
- AGM-modus: Specifically designed for cold weather charging (below 5°C) and for Start & Stop batteries (EFB & AGM types).
- Vernieuwingsmodus: Recovers deeply discharged batteries. The charger can recover batteries discharged down to 2V (SOS Recovery).
Speciale functies:
- Leveringswijze: 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.
Indicatoren voor het laadproces:
The charger features intuitive indicators to show the charging progress and status. Refer to the charger's display for current information.

Deze afbeelding geeft een duidelijk beeld 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.
Onderhoud
To ensure the longevity and optimal performance of your GYSFLASH 8.12 charger, follow these maintenance guidelines:
- Schoonmaak: Disconnect the charger from both the mains and the battery before cleaning. Use a soft, dry cloth to wipe the casing. Gebruik geen schurende reinigingsmiddelen of oplosmiddelen.
- Opslag: Bewaar de oplader op een koele, droge plaats wanneer u hem niet gebruikt. Zorg ervoor dat de kabels netjes opgerold zijn en niet geknikt.
- Kabelinspectie: Controleer regelmatig het netsnoer en de accukabels op beschadigingen, sneden of rafels. Gebruik de oplader niet als de kabels beschadigd zijn.
- Temperatuur: The charger has an integrated temperature probe to prevent internal electronics overheating. Ensure adequate ventilation around the unit during operation.
Probleemoplossing
If you encounter issues with your GYSFLASH 8.12, refer to the following common problems and solutions:
| Probleem | Mogelijke oorzaak | Oplossing |
|---|---|---|
| Oplader gaat niet aan. | 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. |
| Het opladen start niet. | Incorrect battery connection (polarity reversed); battery too deeply discharged; battery fault. | Controleer batterij 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. |
| De oplader voelt heet aan. | 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. |
Technische specificaties
| Functie | Specificatie |
|---|---|
| Model | GYSFLASH 8.12 |
| Onderdeelnummer | 29385 |
| Ingangsvolumetage | 230 volt wisselstroom |
| Uitgangsvolumetage | 12 Volt DC |
| Laadstroom | 8 Amps |
| Wattage | 130 Watt |
| Batterijcapaciteit (opladen) | 15 tot 160 Ah |
| Batterijcapaciteit (onderhoud) | Tot 240 Ah |
| Afmetingen (LxBxH) | 10x52x19cm |
| Artikelgewicht | 9 gram |
| IP-classificatie | IP65 (Dust and water ingress resistant) |
| Land van herkomst | Frankrijk |
Garantie en ondersteuning
For warranty information and technical support, please refer to the official GYS webBezoek onze website of neem contact op met uw lokale distributeur. Bewaar uw aankoopbewijs als bewijs van aankoop voor eventuele garantieclaims.
Fabrikant: GYS





