CTEK I1225 EU 40-189 Automatic Battery Charger 12V 25A for 40-500Ah Batteries

The CTEK I1225 EU 40-189 stands out with its 25A charging current, capable of servicing large 12V lead-acid batteries from 40Ah up to 500Ah. Unlike smaller chargers, it handles WET, MF, Ca/Ca, AGM, and GEL types with an 8-step automatic process that includes desulphation and temperature compensation.

Highlights

• 25A charging current for large battery banks
• Supports 12V lead-acid: WET, MF, Ca/Ca, AGM, GEL
• 8-step fully automatic charging with desulphation
• Selectable modes: Normal, Recond, Supply
• IP44 splash and dust proof housing
• Reverse polarity, short-circuit, and spark-proof protection

In daily use

The charger connects via 2m AC and DC cables, and its natural convection cooling keeps operation quiet. The Recond mode can revive deeply discharged batteries, while Supply mode provides stable power for diagnostics or maintenance. Suitable for marine, RV, automotive, and industrial applications.

Full specifications

• Input voltage: 220-240V AC, 50-60Hz
• Output voltage: 14.4V / 15.8V (Normal/Recond)
• Ripple: less than 4%
• Efficiency: 85%
• Operating temperature: -20°C to +50°C
• Housing material: durable, impact-resistant plastic

Final note

Built to handle demanding charging tasks, the CTEK I1225 EU 40-189 delivers reliable performance for large batteries.