GYSFLASH 18.12 PL-E – On-Board Lead-Acid & Lithium Battery Charger (12V) The GYSFLASH 18.12 PL-E is a compact, high-performance on-board battery charger designed for leisure vehicles, camper vans, caravans, and pleasure craft. Made in France by GYS, it combines fanless silent operation, intelligent charging technology, and full European compliance to ensure safe, efficient battery maintenance for both Lead-Acid and LiFePO4 Lithium batteries. Ergonomic, Robust and Quiet Design Fanless technology: Completely silent with no external ventilation, preventing dust ingress and protecting internal electronics. Durable aluminium casing: Shock- and corrosion-resistant for long-term reliability. Simple, intuitive interface for ease of use. Designed for vertical wall mounting inside vehicles or engine bays. Ultra-Secure Operation Fully protects on-board electronics: safeguards against short circuits, polarity reversal, and overcharging. Spark prevention system and no output voltage when the battery is disconnected. Integrated temperature sensor to prevent overheating. Complies with all current European safety and EMC standards. Anti-start signal: Notifies the vehicle system when the charger is connected to mains power. High-Performance Charging Technology High efficiency: Continuous 18A duty cycle at 100% (25°C) ensures full charging performance even during prolonged use. Power Factor Correction (PFC): Cleaner current draw and up to 22% energy savings compared to standard chargers. Energy consumption reduced by 15% overall. The GYSFLASH 18.12 PL-E integrates three dedicated charging curves for 12V batteries: Lead-Acid (liquid), Lead-AGM, and Lithium-Iron Phosphate (LiFePO4). Each curve is designed to optimise charge quality and extend battery lifespan. Optimal and Gentle Battery Charging Extends lifespan and performance of Lead (AGM, liquid, etc.) and Lithium (LFP) batteries. Automatically adjusts charging current to match connected appliances’ demand. Three selectable modes: Liquid Lead: For 12V lead-acid batteries from 12Ah to 270Ah. Lead/AGM: For 12V AGM batteries from 36Ah to 270Ah. LiFePO4: For lithium iron phosphate batteries from 18Ah to 270Ah. Intelligent Lead-Acid Charging Curve Recovers heavily discharged or sulphated battery cells using SOS Recovery mode. Ensures full 100% charge for optimal battery health. Maintains safe charge levels during long-term storage (e.g. winter periods). Provides complete protection for vehicle electronics and the user. Advanced Lithium (LFP) Charging Curve Perfect balancing of all cells using EBS (Equalizing Battery System) technology. Regular rebalancing for maximum performance and cell longevity. Includes UVP Wake-Up system to reactivate deep-discharged batteries (Under Voltage Protection recovery). Fully compatible with modern BMS (Battery Management Systems). Technical Specifications Specification Detail Voltage 220–240 V AC / 50–60 Hz Power 300 W Charge Current 18 A Battery Types Lead-Acid (Liquid/AGM), LiFePO4 (Lithium Iron Phosphate) Supported Battery Capacity Lead: 36–270 Ah, Lithium: 18–270 Ah Ripple Voltage
