The GYSFLASH 4.12 is a versatile charger designed for 12V batteries in small vehicles like urban cars, motorbikes, jet skis, go-karts, and lawnmowers. Featuring a sophisticated 7-step intelligent charging curve—Analysis, Recovery, Test, Desulfation, Charge, Absorption, and Floating Charge—it delivers a highly efficient charge in half the time of conventional chargers. Capable of handling batteries from 1.2 to 90 Ah and providing maintenance charging up to 130 Ah, it includes specialized modes for winter conditions and Start & Stop AGM batteries. The charger also comes with an optional cigarette lighter adaptor for easy connectivity. Its optimized maintenance function allows it to remain plugged in indefinitely during winter to preserve battery health, and the “Auto Restart” feature ensures it resumes charging with the correct settings after a power interruption.

• Charging capacity from 1.2 to 90 Ah (130 Ah trickle charge)
• Optimised to maintain a high level of performance in cold weather (‘Cold charge’ mode)
• Recovers even deeply discharged batteries (SOS Recovery)
• Fully automatic, intelligent 7-step charge curve (50% faster than traditional charger)
• Compact, ligthweight, dust- and liquid-tight design (IP65)
• Total protection: against short-circuits, reverse polarity and overcharging
• 230 V power supply
• Dimensions:  170 x 90 x 51 mm 
• Weight:  690 g
• Supplied with clips and connection plugs