CTEK PRO25S 12v 25a Lead Acid and Lithium Battery Charger

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The PRO25S is an innovative, versatile and highly efficient 25A battery charger and power supply, designed around the needs of the automotive professional. Combining power and advanced technology with safety, portability and flexibility to work with any 12V vehicle battery including 12v lithium(LiFePO4, Li-Fe, Li-iron, LFP).

The PRO25S is the perfect solution to professional battery charging, in the workshop or the showroom.

Advanced technology will ensure that a safe, fast charge is delivered to exactly meet the needs of the individual battery. The PRO25S has a dedicated lead-acid battery reconditioning programme to restore battery life & recondition flat batteries. SUPPLY mode will support the battery during diagnostic or fault finding work. It has low voltage and current ripple, so it's safe for the battery and the vehicle's delicate electronic systems.

Fully automatic and easy to use, it's also very simple to connect, spark proof and reverse-polarity protected to protect the user and also the battery.


Dedicated lithium mode
Compatible with batteries from 40Ah to 500Ah (30Ah to 450Ah lithium).
SUPPLY mode to support the battery during diagnostic or fault-finding work.
Fully automatic and easy to use. Simple to connect, spark proof and reverse-polarity protected.
Integrated safety features, so it's safe for the battery & the vehicle.
Built-in temperature sensor to achieve maximum charge levels
Dedicated lead-acid reconditioning programme to restore battery life and recondition flat batteries.
IP44 classified for outdoor use
Lightweight and highly portable
Tough and robust


Input: 220-240v AC 50-60Hz 2.9a
Output Lead Acid Batteries: 14.4/15.8/13.6v at 25a
Output Lithium Batteries: 13.8v/14.4v/13.3v 25a
Start Voltage: 2v
Back Current Drain: Less than 1ah / Month
Battery Types: 12v Wet, MF, Ca/Ca, AGM, EFB, Gel and LiFePO4
Battery Capacity Lead Acid: 40-500 ahr
Battery Capacity Lithium: 30-450 ahr
Charge Stages: 8

Product brochure / datasheet can be downloaded by clicking the PDF icon just below the main image.


Product Videos

Model # 40-200
Barcode # 7340103402008


CTEK offers 2 year manufacturer warranty on this product. Warranty will be void if:

Charger has been used with much higher current and or voltage than designed for and specified in models specifications sheet.
Clear signs of heat on any of the CTEK casing, cables or circuitry.
Used with incorrect voltage or incorrect battery types.
Visible signs of impact or water damage.
CTEK product has been opened by a non CTEK authorised engineer or agent.

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