1. Úvod
The GYSFLASH 12.12 is an advanced 12V 12A smart battery charger designed for optimal charging and maintenance of various 12V lead-acid batteries, including those found in cars, utility vehicles, motor homes, buses, commercial vehicles, and agricultural equipment. This manual provides essential information for safe and effective operation of your GYSFLASH 12.12 charger.
It features an 8-step intelligent charging curve to ensure maximum battery performance and longevity, along with specialized modes for different battery types and conditions.
2. Bezpečnostní pokyny
Read all safety warnings and instructions carefully before using the charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always ensure proper ventilation during charging to prevent gas accumulation.
- Do not charge frozen batteries. Allow them to warm up before charging.
- Během nabíjení se vyhýbejte jiskrám nebo plamenům v blízkosti baterie, protože baterie mohou uvolňovat výbušné plyny.
- Při práci s bateriemi používejte ochranu očí a ochranný oděv.
- Disconnect the AC power supply before making or breaking connections to the battery.
- This charger is designed for 12V lead-acid batteries only (WET, MF, Ca/Ca, AGM, GEL, EFB). Do not use it for other battery types.
- The charger is protected against short circuits, polarity reversal, and overcharging. It also features anti-spark technology.
- The GYSFLASH 12.12 has an IP65 rating, indicating resistance to dust and water ingress. However, avoid submerging the unit.

3. Konec produktuview
The GYSFLASH 12.12 is a compact and robust battery charger. Key components include:
- Hlavní jednotka: Houses the charging electronics, control panel, and indicators.
- Ovládací panel: Features LED indicators for charging status, selected mode, and potential errors.
- Tlačítko pro výběr režimu: Used to cycle through available charging modes.
- Baterie Clamps/Terminals: Červená pro kladný (+), černá pro záporný (-).
- AC napájecí kabel: Connects the charger to a standard wall outlet.
- Externí teplotní senzor: Automatically adjusts the charging curve based on ambient temperature for optimal performance.

4. Nastavení a připojení
Follow these steps to safely connect the GYSFLASH 12.12 charger to your battery:
- Připravte si baterii: Ensure the battery terminals are clean and free of corrosion. If charging an in-vehicle battery, ensure the vehicle's ignition is off and all accessories are disconnected.
- Připojení k baterii:
- Připojte červená (+) charger clamp/terminal to the kladný (+) svorka baterie.
- Připojte černá (-) charger clamp/terminal to the záporný (-) svorka baterie.
- For in-vehicle batteries, if the battery is not grounded to the chassis, connect the black (-) clamp to the negative (-) battery terminal. If the battery is grounded to the chassis, connect the black (-) clamp k podvozku vozidla dále od baterie a palivového potrubí.
- Připojení k napájení: Plug the charger's AC power cable into a standard electrical outlet. The charger will power on.
- Vyberte režim: Press the mode selection button to choose the appropriate charging mode (see Section 5).
Pro odpojení nejprve odpojte nabíječku ze zásuvky a poté odpojte černý (-) konektor.amp, následovaný červeným (+) clamp.

5. Provozní režimy
The GYSFLASH 12.12 offers several operating modes to optimize charging for different battery types and conditions. Use the mode selection button to cycle through these options.
- Normal Charge Mode: Standard charging for most 12V lead-acid batteries (WET, MF, Ca/Ca, GEL).
- Režim AGM: Specifically designed for cold weather charging (below 5°C) and for Start & Stop batteries (EFB & AGM types). This mode adjusts charging parameters for these specific conditions.
- Režim obnovení: Used to recover deeply discharged batteries. This mode attempts to recondition batteries that have been left discharged for extended periods.
- Režim napájení: Transforms the charger into a stabilized power supply. This mode is useful for:
- Maintaining battery health during vehicle demonstrations in showrooms.
- Preserving vehicle memory settings (e.g., radio codes, ECU data) during battery replacement.
The charger also features an Optimized Maintenance Charge, allowing it to remain plugged in indefinitely during winter months to maintain battery health without overcharging.

6. 8-Step Intelligent Charging Curve
The GYSFLASH 12.12 utilizes an advanced 8-step charging curve to ensure efficient, safe, and complete charging, maximizing battery lifespan and performance. The external temperature sensor automatically adjusts this curve based on ambient conditions.
- Analýza: Assesses battery condition and initial charge level.
- Zotavení: Initiates a gentle charge for deeply discharged batteries (SOS Recovery for batteries >2V).
- Test: Checks battery's ability to accept charge.
- Desulface: Applies a pulsed charge to break down lead sulfate crystals, restoring battery capacity.
- Účtovat: Bulk charging phase, delivering maximum current until the battery reaches approximately 80% capacity.
- Vstřebávání: Gradually reduces current while maintaining voltage to bring the battery to 100% charge.
- Obnovit: (If selected or needed) Further reconditions the battery.
- Plovoucí poplatek: Udržuje baterii plně nabitou s nízkou, konstantní hlasitostítage, preventing self-discharge.

7. Údržba
Proper maintenance ensures the longevity of your GYSFLASH 12.12 charger and the batteries it charges.
- Péče o nabíječku:
- Udržujte nabíječku čistou a suchou. Otírejte ji měkkým,amp tkanina. Nepoužívejte rozpouštědla.
- Pokud nabíječku nepoužíváte, skladujte ji na chladném a suchém místě.
- Zkontrolujte kabely a clamps regularly for damage. Replace if necessary.
- Péče o baterie:
- Ujistěte se, že svorky baterie jsou čisté a bez koroze.
- For conventional lead-acid batteries, check electrolyte levels periodically and top up with distilled water if needed (do not overfill).
- For optimal battery health, use the maintenance charge feature during long periods of inactivity.
8. Řešení problémů
Pokud narazíte na problémy s vaším GYSFLASH 12.12, podívejte se na následující běžné problémy a jejich řešení:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Nabíječka se nezapne. | No AC power; faulty power cable. | Check AC outlet and power cable connection. Try a different outlet. |
| Charging indicator not active. | Nesprávné připojení baterie; vybitá baterietage too low; incorrect mode selected. | Verify positive/negative connections. Ensure battery voltage is above 2V for recovery. Select appropriate mode. |
| Svítí LED dioda chyby. | Polarity reversal; short circuit; internal fault. | Disconnect charger, check connections for correct polarity. Inspect cables for damage. If error persists, contact support. |
| Baterie není po delší době plně nabitá. | Battery deeply discharged or sulfated; battery capacity too large for charger; faulty battery. | Try "Refresh" mode for deeply discharged batteries. Ensure battery capacity is within charger's range (1.2-250 Ah). Test battery condition. |
| Charger automatically stops. | Battery disconnected; power cut; battery fully charged. | Check battery connections. The "Auto Restart" feature should resume charging after a power cut. If battery is full, this is normal operation. |
If the problem persists after attempting these solutions, please contact GYS customer support.
9. Specifikace
| Funkce | Detail |
|---|---|
| Značka | gys |
| Model | GYSFLASH 12.12 (GYS - 029392) |
| Jmenovitý svtage | 12 V |
| Ampvymazat | 12 Amps |
| Kapacita baterie (nabíjení) | 1.2 Ah až 250 Ah |
| Kapacita baterie (údržba) | Až 330 Ah |
| Kompatibilní typy baterií | Lead-acid (WET, MF, Ca/Ca, AGM, GEL, EFB, Start & Stop) |
| Nabíjecí křivka | 8-step intelligent charging curve |
| Hodnocení ochrany | IP65 (odolnost proti prachu a vodě) |
| Bezpečnostní funkce | Short circuit, polarity reversal, overcharging protection, anti-spark, integrated temperature probe. |
| Rozměry (DxŠxV) | 28 x 11 x 5.5 cm |
| Hmotnost | 950 g |
| Země původu | Francie |

10. Záruka a podpora
The GYSFLASH 12.12 charger comes with a 2-letá záruka, která se vztahuje na výrobní vady od data nákupu. Uschovejte si prosím doklad o koupi pro případné reklamace.
For technical assistance, troubleshooting beyond this manual, or warranty service, please contact GYS customer support through their official website or your local distributor. Provide your product model number (GYSFLASH 12.12 or GYS - 029392) and a detailed description of the issue.
Official GYS Webmísto: www.gys.fr





