GYSFlash 51.12 CNT FV – Battery Charger 50amp high power stabilised supply incorporating Inverter technology for 12V


GYSFlash 51.12 CNT FV – Battery Charger (2.5M Cables)


The GYSFLASH 51.12 CNT FV is a 50 A high power connected charger with inverter technology. It allows to keep a 12 V lead or lithium battery at a perfectly stabilized voltage during the diagnostic phases. It will deliver the best charging cycle recommended for the maintenance of the most advanced vehicles on the market. Its USB connectivity makes it 100% customizable.


4 Operating Modes:

  • Charging : for 12 V Lead or Lithium (LFP) batteries from 20 to 600 Ah.
  • Diagnostics : supports up to 50 A for 12 V batteries in vehicles in the diagnostic phase, in maintenance workshops
  • Showroom : provides continuous power when using the electrical accessories of a demonstration vehicle. It also manages the optimal charging of the battery
  • Tester : Allows you to check the battery voltage, evaluate the starting system (starter + battery) and the condition of the vehicle’s alternator.


100% Connected:

  • Add, delete or modify charging modes and profiles via USB.
  • Configuration files bespoke to your application.
  • Retrieve the charging history and data on a USB stick and use them on a spreadsheet.
  • Connect additional modules (printer, barcode reader, etc.) via its dedicated module socket (SMC: Smart Module Connector).


Automatic Charge:
  • Extends the life and performance of Lead (gel, AGM, liquid, calcium, etc.) and Lithium (Lithium-ion «standard» + Lithium-iron Phosphate) batteries.
  • Specific charge curve in 8 steps (Lead) or 9 steps (Lithium) unattended
  • Recovers deeply discharged batteries >2 V (automatic SOS Recovery)..


Technologies & Advanced Functions
  • FV Flexible Voltage, the charger operates with a supply voltage between 85 and 265 V.
  • «Auto-Detect» function automatically starts a charge when a battery is connected to the charger
  • «Auto-Restart» function in the event of a power failure with memory of the settings.
  • Control and calibration of cables.
  • Locking, avoids the risk of improper handling, ideal for garages and exhibition halls.
  • Up to 12 charging profiles available, including the Easy profile for simplified charging suitable for all lead batteries.



  • Protection of the vehicle’s on-board electronics: protection against short circuits, polarity reversal and overcharging. Spark prevention system.
  • Replaceable fuse which protects against misuse.
  • Temperature sensor to prevent internal electronics overheating.



  • Durable case with shock and vibration absorbing pads.
  • IP41 enclosure, protected against the intrusion of objects larger than 1 mm.
  • Low height (13 cm) for the loader to pass under a vehicle.


OEM Homologations







Best Sellers

The Car Repair Appointment