


Prices Exclude Tax
The GYSFLASH 100.12 is a high-performance 100A inverter charger and power supply designed for professional workshops, diagnostics, and showrooms. Delivering precise voltage regulation for 12V Lead-Acid (Gel, AGM, Liquid, Calcium) and Lithium (LiFePO₄) batteries, it ensures safe, stable power delivery up to 100 amps. With five selectable modes — Charge, Showroom, Diagnostic, Battery Change, and Power Supply — it offers full flexibility for maintenance, repair, and calibration operations. The compact, fanless IP67-rated casing allows silent, dust-free operation and low-profile positioning beneath vehicles. Equipped with Auto Restart, SOS Recovery for deeply discharged batteries, and Expert Mode for custom charging curves, the GYSFLASH 100.12 combines intelligence, safety, and rugged build quality for heavy-duty professional use.



It’s ideal for maintaining voltage during diagnostics, ECU reprogramming, or showroom display while safely charging 12V Lead-Acid or Lithium batteries.
Yes. It delivers a 100% duty cycle at up to 75A continuous power, with full 100A output in normal temperature conditions.
The GYSFLASH 100.12 includes spark prevention, reverse polarity, overload, and thermal protection to safeguard both the charger and vehicle electronics.
Yes. Its low-profile (10.5 cm) design and IP67 protection make it ideal for use beneath vehicles or in clean workshop environments.
Why Choose GYS from BWS Ltd As an approved GYS service centre with a nationwide team of trained engineers, BWS Ltd offers full sales, setup, and after-sales support for the GYS range. Buying from BWS ensures your investment includes: * Certified installation and training * Ongoing calibration and servicing * Expert support from real bodyshop engineers Trusted UK bodyshop & welding equipment supplier since 1994. Approved GYS Sales Service and Support Supplier – exceptional service, expert advice, and fast delivery you can rely on.