Power / Batteries & Chargers
GYSFLASH 123.12 CNT FV 12V Battery Charger
Quick guide for the GYSFLASH 123.12 CNT FV 12V battery charger. Learn about its 4 operating modes, safety features, technical specifications, and installation options.
Table of contents
Quick guide from the manual
The GYSFLASH 123.12 CNT FV is a high-power 120A inverter battery charger designed for 12V lead and lithium batteries. It features flexible voltage input (85-265V) and is suitable for professional automotive maintenance, showroom displays, and diagnostic tasks.
- Operating Modes: Charge, Diagnostic, Showroom, and Test.
- Connectivity: Includes USB for profile management and data export, plus an SMC (Smart Module Connector) for additional modules like printers or barcode readers.
- Safety: Equipped with short-circuit, polarity reversal, and overcharge protection, plus a spark-free system.
Product Overview
The unit is designed for wall mounting or use on a lift. It features a compact, robust design with an integrated cable winder and shock-absorbing feet. The interface supports 22 languages and provides real-time monitoring of the charging process.
Operating Modes
The charger offers four distinct modes to handle various automotive needs:
- Charge: Suitable for 12V lead or lithium batteries ranging from 5Ah to 1500Ah.
- Diagnostic: Provides up to 120A of current to support vehicle electronics during maintenance phases.
- Showroom: Maintains the battery charge while powering vehicle electronics in a showroom environment.
- Test: Evaluates battery status, starter performance, and alternator condition.
Advanced Features
- Flexible Voltage: Operates on input voltages between 85V and 265V.
- Auto-Detect: Automatically detects and starts charging when a battery is connected.
- Auto-Restart: Automatically resumes charging with saved parameters after a power interruption.
- SOS Recovery: Can repair deeply discharged batteries (>2V).
- Locking Function: Prevents unauthorized changes, ideal for workshops and showrooms.
Technical Specifications
The charger is designed for high-performance environments with the following key parameters:
- Input Voltage: 85-265V (Flexible Voltage).
- Output Current: Up to 120A.
- Battery Compatibility: 12V Lead (Gel, AGM, Liquid) and Lithium (LFP).
- Capacity Range: 20-1500Ah.
- Weight: 6.4 kg.
- Cable Length: 5 meters.
Manufacturer information
GYS
Practical help
Common problems
Deeply discharged battery
Use the SOS automatic recovery function for batteries with voltage >2V.
Power interruption during charging
The device features an auto-restart function that saves parameters and resumes charging automatically once power is restored.
Before use
- Ensure the input voltage is within the 85-265V range.
- Verify the battery type (Lead or Lithium) and capacity (20-1500Ah).
- Check that all cable connections are secure.
- Ensure the charger is placed in a well-ventilated area.
- Confirm the correct charging profile is selected via the interface.
Specs in practice
- Flexible Voltage
- Allows the charger to operate on input voltages between 85V and 265V.
- Diagnostic Mode
- Provides up to 120A of current to support vehicle electronics during maintenance.
- Showroom Mode
- Maintains battery charge while powering vehicle electronics in a showroom.
Images and diagrams
- The front panel features a digital display for monitoring charge status and battery parameters.
- The unit includes a cable winder and shock-absorbing feet for ergonomic use.
Model compatibility
- Compatible with 12V Lead (Gel, AGM, Liquid) and Lithium (LFP) batteries.
- Supports batteries with capacity between 20Ah and 1500Ah.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.