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GYSFLASH 4A - Battery charger for Twizy


The GYSFLASH 4A is an automatic charger designed to charge or maintain 12V batteries (liquid or gel). It is powerful, compact, light and water proof.

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  • Ensures an automatic charge up to 100% without supervision.
  • Ideal for lawn mowers, bikes, cars, vans, boats,trucks, etc…
  • Charges from as low as 1 volt.
  • Examples of use:

- Charger for car/bike 12V battery
- Maintenance/wintering
- Battery recovery (for sulphated 12V batteries)

  • Protection for on-board electronics of your car.
  • Protection against short circuits/ polarity reversals/ overvoltage
  • Anti-spark system
  • Adapted to marine application, it doesn’t create any galvanic current (current which electrolyzes the water and corrodes the hull).
  • Specific charge for cold temperatures
  • Supplied with 2 quick connection kits (clamps and terminals).
  • Cables with specific terminal connections to fix permanently to the vehicle, allows you to connect the charger quickly.

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GYSFLASH is designed for charging a variety of SLA (Sealed Lead Acid) batteries, widely used in cars and other vehicles.

GYSFLASH 4A charges 12V batteries (6 cells of 2V) from 1.2 Ah to 70 Ah, or provides a maintenance
charge for 12V batteries from 1.2 to 130 Ah.



GYS certifies that the product described here is manufactured in compliance with the requirements of the following European directives:

- Low Voltage Directive: 2006/95/EC - 12/12/2006 (amended by 93/68/EEC)
- EMC Directive: 2004/108/EC, 15/12/2004 (amended by 92/31/EEC, 93/68/EEC, 91/263/EEC, 93/97/EEC)

It therefore complies with the following harmonized standards: EN60335-1 - EN60335-2-29 – EN55014-1 - EN55014-2 – EN61000-3-2– EN61000-3-3 – EN62233.

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1 year Warranty

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Tested and approved for TWIZY

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