GYSFLASH S 4.12 – US | 12V 4A Smart Charger

GYSFLASH S 4.12 US – 12V 4A Smart Battery Charger & Maintainer

The GYSFLASH S 4.12 US is a compact, professional-grade 12V smart battery charger and maintainer designed to keep smaller vehicle batteries in peak condition. Ideal for motorcycles, jet-skis, go-karts, lawn equipment, and small city cars, this charger is engineered for the North American market with a 110V Type-A plug and delivers precise, efficient charging for lead-acid batteries from 1.2 to 90 Ah (up to 130 Ah in maintenance mode).

Built with an intelligent 7-step charging program, the GYSFLASH S 4.12 US charges up to 50% faster than traditional chargers while extending battery life. Its SOS Recovery mode can revive deeply discharged batteries (>2V), and Cold Charge mode ensures optimal performance in temperatures below 5°C — making it an excellent AGM battery charger and a reliable choice for stop-start battery systems.

Key Features:

• Wide Battery Compatibility: Works with 12V lead-acid batteries including flooded, AGM, gel, and calcium types.

• Smart 7-Step Charging: Fully automatic process maximizes battery performance and longevity.

• SOS Recovery Mode: Revives deeply discharged batteries safely and effectively.

• Cold Weather Optimization: Maintains efficiency in low temperatures; ideal for AGM and stop-start applications.

• Safe & Secure Operation: Short-circuit, reverse-polarity, and overcharge protection with anti-spark technology.

• Compact, Rugged Design: IP65 dust- and water-resistant casing; lightweight for easy storage and transport.

• Ready to Use: Supplied with battery clamps and M6 terminal connectors; optional cigarette-lighter adapter available.

Whether you need a motorcycle battery charger for seasonal maintenance, a 4A battery maintainer for small cars, or an all-weather charger for recreational vehicles, the GYSFLASH S 4.12 US delivers reliable, safe, and efficient performance year-round.