CTEK PRO25S, 12V Battery Charger & Maintainer, 25A, UK Plug

CTEK PRO25S – 12V Battery Charger & Maintainer, 25A (UK Plug)

The CTEK PRO25S is a compact, powerful, and professional-grade 12V battery charger, maintainer, and power supply built for workshop environments. Delivering up to 25 amps, it is designed for use with all 12V battery types—including lithium (LiFePO₄)—making it perfect for diagnostic work, battery support during service, and reliable long-term maintenance charging.

Key Features

• 25A Workshop Power & Charging
  Offers fast and efficient charging for 12V batteries and a stable power supply for use during diagnostics, programming, or battery changes.
• Fully Automatic 8-Step Charging
  Simplifies battery care by automatically adjusting charging based on battery condition and type.
• Parallel Load Compensation
  Maintains a steady and accurate power supply, even when additional electrical loads are applied—critical for modern diagnostics and software updates.
• Temperature Compensation
  Automatically adjusts output based on ambient temperature (-20°C to +50°C), ensuring optimal performance and battery safety in all climates.
• Recond Mode
  Recovers deeply discharged and stratified lead-acid batteries, extending battery life and capacity.
• Lithium Wake-Up Mode
  Activates 12V lithium batteries with undervoltage protection (e.g., LiFePO₄) that have entered sleep mode.
• Safe for Vehicle Electronics
  Ripple-free, spark-free, and protected against short circuits and reverse polarity—perfectly safe for use with sensitive ECUs and electrical systems.

Specifications

• Input Voltage: 220–240V AC, 50–60Hz
• Output Voltage: 12V
• Charging Current: Max 25A
• Battery Capacity Range:
  • Charging: 40–500Ah
  • Maintenance: Up to 800Ah
• Battery Types Supported:
  • 12V Lead-Acid: WET, MF, Ca/Ca, AGM, EFB, GEL
  • 12V Lithium: LiFePO₄, LFP
• Charging Algorithm: Fully automatic 8-step process
• Operating Temperature: -20°C to +50°C
• Insulation Class: IP44 (splash resistant)
• Plug Type: UK Plug
• Display: LED indicators for charge status and mode
• Dimensions: 235 x 130 x 65 mm
• Weight: Approx. 1.9 kg

Frequently Asked Questions (FAQ)

Q: What vehicles is the PRO25S suitable for?
A: It’s ideal for cars, light commercial vehicles, boats, motorcycles, and workshop settings where stable charging and power supply are needed.

Q: Does it support lithium batteries?
A: Yes, the PRO25S includes a lithium mode compatible with 12V LiFePO₄ batteries, including a wake-up function for batteries in deep sleep.

Q: Can it be used as a power supply during ECU programming or diagnostics?
A: Yes, it delivers stable, ripple-free 12V power, making it safe and reliable for sensitive electronics and software updates.

Q: Is it safe to use in various environments?
A: Yes, with its IP44 rating, it is splash resistant and suitable for professional use indoors or in covered outdoor spaces.

• Professional Grade Power: Used in professional workshops, the PRO25S is an innovative, versatile and highly efficient 25A battery charger and power supply suitable for all lead-acid and lithium batteries.
• Dedicated Lithium Mode: Unique and patented system to recover, charge and maintain lithium (LiFePO4) batteries to maximise performance and extend life. Dedicated charging for lithium batteries.
• Supply Mode and Lead-Acid Reconditioning Mode: Can be used as a constant 12V power supply source, it will also make sure your vehicle's settings won't be lost if you need to remove the battery. Dedicated lead-acid RECOND program to restore battery life and recondition flat batteries.
• Patented Desulphation Function: Unused batteries lose their power and their life is shortened through sulphation. Pulsing current and voltage, safely removes sulphate from the lead plates of the battery restoring battery health.
• Automatic Temperature Sensor: Allows you to achieve maximum charge levels, no matter what the temperature.