GYSFLASH 100.12 Battery Charger
GYSFLASH 100.12 Battery Charger
The GYSFLASH 100.12 is a high-performance 100A professional battery charger with inverter technology, designed for workshops, dealerships and exhibition centres. Delivering perfectly stable 12V output for both Lead-Acid and Lithium Iron Phosphate (LFP) batteries, it maintains battery health during showroom demonstrations, supports vehicles undergoing diagnostics, and provides the advanced charging cycles demanded by the latest vehicle platforms.
5 Operating Modes
- Charge — charges 12V Lead-Acid or Lithium (LFP) batteries from 5 to 1,200Ah with a 7-step (Lead) or 8-step (Lithium) automatic charging curve
- Showroom — compensates current when using a demonstration vehicle’s electrical resources, while optimising the battery charging process simultaneously
- Diagnostic — supports 12V vehicle batteries during workshop diagnostic sessions, up to 100A
- Battery Change — compensates for vehicle electrical requirements to prevent loss of memory and data during battery replacement
- Power Supply — operates as a high-power stabilised power supply with adjustable regulated voltage and maximum current output
Key Features
- 100A inverter technology — stable, high-output power for demanding professional applications
- Wide battery range — supports Lead-Acid (Gel, AGM, Liquid, Calcium) and Lithium LFP batteries from 5 to 1,200Ah
- SOS Recovery — automatically recovers deeply discharged batteries above 2V
- Auto Restart — memorises settings after a power cut and restarts automatically
- Expert charging curve — fully configurable parameters for advanced users alongside the simplified Easy charging profile
- Cable control & calibration — accommodates cables up to 8m and 16mm²
- Lockable operation — prevents accidental or improper use; ideal for garages and exhibition centres
- Intuitive interface — available in 22 languages
- Low profile design (10.5cm) — can be positioned under a vehicle for space-efficient workshop use
- Silent, dustproof operation — no external ventilation required, reducing noise and dust ingress
- Durable housing — shock and vibration absorbing feet for workshop durability
Ultra-Safe Protection
- Short circuit, reverse polarity and overload protection
- Spark prevention system
- Replaceable fuse protecting against operating errors
- Internal temperature sensor preventing electronics overheating
- IP67 rated (with optional wall-mounted shelf)
Technical Specifications
| Specification | Detail |
|---|---|
| Maximum Output Current | 100A |
| Battery Voltage | 12V |
| Battery Types | Lead-Acid (Gel, AGM, Liquid, Calcium), Lithium LFP |
| Battery Capacity Range | 5–1,200Ah |
| Charging Curve (Lead) | 7-step automatic |
| Charging Curve (Lithium) | 8-step automatic |
| SOS Recovery | Batteries >2V |
| Cable Compatibility | Up to 8m / 16mm² |
| Height | 10.5cm (low profile) |
| Languages | 22 |
| Power Supply | 230V AC |
| Supplied With | 2.5m or 5m cables (16mm²) |
Frequently Asked Questions
Can the GYSFLASH 100.12 be used during vehicle diagnostics?
Yes — Diagnostic mode supports the vehicle’s 12V battery with up to 100A during workshop diagnostic sessions, ensuring stable voltage throughout.
What happens if there is a power cut during charging?
The Auto Restart function memorises the charger’s settings and restarts automatically once power is restored, with no intervention required.
Can I define my own charging parameters?
Yes — the Expert charging curve allows full customisation of charging parameters, alongside the simplified Easy profile for standard Lead-Acid batteries.
Is the GYSFLASH 100.12 suitable for showroom environments?
Yes — Showroom mode compensates current during demonstration vehicle use, the lockable operation prevents accidental misuse, and the silent fanless design keeps noise levels low.
UK-Based Support & Genuine Warranty Protection
When you buy from Dunns Automotive, you’re buying from an authorised GYS UK distributor. Every product comes with full UK warranty coverage and support from our UK-based team.