GYSFLASH 8.12 12V 8 Amp Battery Charger User Manual

Introduction

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.

Safety Instructions

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.
• Avoid short-circuiting the output terminals.
• 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.
• Do not attempt to charge non-rechargeable batteries.
• Keep out of reach of children.

Setup and Connection

Follow these steps to set up and connect your GYSFLASH 8.12 battery charger:

1. Prepare the Battery: 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.
2. Connect to Battery:
   • Connect the red (+) clamp from the charger to the positive (+) terminal of the battery.
   • Connect the black (-) clamp from the charger to the negative (-) terminal of the battery. If connecting to a vehicle, connect the black clamp to the vehicle chassis away from the battery and fuel line.

   

   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.

3. Connect to Power: Once the battery connections are secure, plug the charger's power cord into a suitable 230V AC electrical outlet.
4. Initial Check: 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).

Operating Instructions

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.

Charging Modes:

• Standard Charge: For 12V batteries from 15 to 160 Ah.
• AGM Mode: Specifically designed for cold weather charging (below 5°C) and for Start & Stop batteries (EFB & AGM types).
• Refresh Mode: Recovers deeply discharged batteries. The charger can recover batteries discharged down to 2V (SOS Recovery).

Special Functions:

• Supply Mode: 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.

Charging Process Indicators:

The charger features intuitive indicators to show the charging progress and status. Refer to the charger's display for current information.

This image provides a clear 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.

Maintenance

To ensure the longevity and optimal performance of your GYSFLASH 8.12 charger, follow these maintenance guidelines:

• Cleaning: Disconnect the charger from both the mains and the battery before cleaning. Use a soft, dry cloth to wipe the casing. Do not use abrasive cleaners or solvents.
• Storage: Store the charger in a cool, dry place when not in use. Ensure cables are neatly coiled and not kinked.
• Cable Inspection: 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.
• Temperature: The charger has an integrated temperature probe to prevent internal electronics overheating. Ensure adequate ventilation around the unit during operation.

Troubleshooting

If you encounter issues with your GYSFLASH 8.12, refer to the following common problems and solutions:

Technical Specifications

Warranty and Support

For warranty information and technical support, please refer to the official GYS website or contact your local distributor. Keep your purchase receipt as proof of purchase for any warranty claims.

Manufacturer: GYS