GYS 100.12HF Battery Support Unit And Charger
£750.00 + VAT
GYSFLASH 100.12 Professional Battery Charger & Power Supply – 100A Intelligent Workshop Support Unit
The GYSFLASH 100.12 is a high-performance 100 Amp intelligent battery charger and stabilised power supply, engineered specifically for modern automotive workshops, dealerships, diagnostic specialists, and vehicle showrooms.
Built with advanced inverter technology, the GYSFLASH 100.12 delivers precise voltage stabilisation and powerful battery support, ensuring the electrical system of a vehicle remains perfectly stable during diagnostics, ECU programming, battery replacement, or showroom demonstrations.
Designed to support both 12V lead-acid and lithium (LiFePO4 / LFP) batteries, this professional charger provides the optimal charging cycle recommended by vehicle manufacturers, helping extend battery life while protecting sensitive vehicle electronics.
Professional 100A Battery Support for Modern Vehicles
Modern vehicles require stable voltage during diagnostics and programming. Voltage drops can cause ECU corruption, diagnostic failures, and system resets.
The GYSFLASH 100.12 provides up to 100A of clean, stabilised power, ensuring:
✔ Safe ECU programming
✔ Reliable diagnostic sessions
✔ Stable voltage during ADAS calibrations
✔ Secure battery replacement without memory loss
✔ Continuous power during vehicle demonstrations
This makes it the ideal power support unit for workshops working on modern vehicles with complex electronics.
Multi-Function Workshop Charger
The GYSFLASH 100.12 is far more than a battery charger. It offers multiple intelligent operating modes designed for professional environments.
Vehicle Battery Charging
- Suitable for 12V lead-acid batteries (AGM, Gel, Flooded, Calcium)
- Compatible with Lithium Iron Phosphate (LiFePO4 / LFP) batteries
- Supports battery capacities from 5Ah to 1200Ah
- Intelligent multi-stage charging for maximum battery health
Showroom Power Mode
Maintains perfect battery voltage during vehicle demonstrations, ensuring electrical systems remain stable while customers interact with the vehicle.
Diagnostic Support Mode
Provides stable 12V power up to 100A, essential when running vehicle diagnostics, ECU updates, and coding procedures.
Battery Replacement Mode
Prevents loss of vehicle memory, ECU settings, and radio codes during battery replacement by maintaining the vehicle’s electrical system.
Stabilised Power Supply Mode
Can also be used as a high-power regulated power supply, with adjustable voltage and current settings for advanced workshop applications.
Advanced Intelligent Charging Technology
The GYSFLASH 100.12 uses smart charging algorithms to ensure the safest and most efficient charging process.
Lead-Acid Charging Curve
A 7-stage intelligent charging process optimises battery health and longevity.
Lithium Battery Charging
An 8-stage lithium charging profile designed specifically for LiFePO4 batteries, ensuring safe and efficient charging.
Deep Discharge Recovery
The integrated SOS Recovery system automatically restores batteries discharged down to 2V, recovering batteries that many chargers cannot.
Built for Professional Workshops
The charger is designed with professional durability, safety, and usability in mind.
Intelligent Auto Restart
If there is a power interruption, the charger automatically remembers previous settings and resumes operation, preventing downtime.
Cable Calibration
Supports cables up to 8 metres and 16mm², with automatic calibration to maintain accurate voltage delivery.
Lockable Operation
The system can be locked to prevent accidental adjustments, making it ideal for busy garages and dealerships.
Expert Charging Mode
Advanced users can enable Expert Mode, allowing custom charging parameters to suit specialist workshop requirements.
Ultra-Safe Electronics Protection
Modern vehicles contain sensitive electronic systems, which require careful voltage control.
The GYSFLASH 100.12 includes multiple safety systems:
✔ Short circuit protection
✔ Reverse polarity protection
✔ Overload protection
✔ Spark prevention technology
✔ Replaceable fuse protection
✔ Internal temperature monitoring
This ensures complete safety for both the vehicle and the operator.
Compact, Durable and Workshop Ready
The GYSFLASH 100.12 is built to withstand the demanding environment of professional workshops.
Key design features include:
- Durable casing with shock and vibration absorbing feet
- Ultra-low profile design (10.5 cm) – fits easily under vehicles
- Silent operation with no external ventilation fan
- Reduced dust intake for longer service life
- Supplied with 2.5 metre charging cables as standard
Why Workshops Choose the GYSFLASH 100.12
The GYSFLASH 100.12 has become one of the most trusted battery support units for modern garages and dealerships.
It is ideal for:
- ECU programming and coding
- Vehicle diagnostics
- ADAS calibration work
- Battery replacement procedures
- Lithium battery maintenance
- Showroom vehicle demonstrations
Order the GYSFLASH 100.12 Today
If your workshop performs diagnostics, ECU programming, ADAS calibration or battery replacements, a professional battery support unit is essential.
The GYSFLASH 100.12 delivers stable 100A power, advanced charging technology, and complete electronic protection, making it one of the best professional workshop battery chargers available today.
Upgrade your workshop equipment and protect modern vehicle electronics with reliable power support.
1 in stock
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A1 Diagnostic Solutions are authorised distributors for GYS Products

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