CTEK Pro 25S – 12V 25A Charger for Lead-Acid & LiFePO4 Batteries

Product Description

The CTEK Pro 25S is a professional-grade automatic charger and the most powerful 12V battery charger in its class, delivering 25A for Lead-Acid and LiFePO4 batteries. Designed as a heavy-duty automotive charger for Indian workshops, fleet operators, and serious enthusiasts, it supports every battery type found in Indian cars, trucks, and SUVs. Built to handle India's voltage fluctuations, monsoon humidity, and extreme heat.

Features & Benefits

• 25A Fast Charging: Cuts turnaround time drastically in high-volume Indian service centres.
• Dual Chemistry Support: One 12v battery and charger solution — covers AGM, GEL, WET, Ca/Ca, and LiFePO4; no second unit needed.
• RECOND Mode: Revives deeply discharged batteries after long monsoon-season storage.
• Power Supply Mode: Stable 13.6V output protects ECU electronics during reprogramming on modern Indian vehicles.
• Temperature Compensation: Reliable from -20°C to +50°C — every Indian climatic zone covered.
• IP44 Weather Resistance: Dust and splash-proof for humid, monsoon-prone Indian garages.
• Surge & Spark Protection: Reverse-polarity and short-circuit safe — essential for def in diesel fleet maintenance on India's unpredictable grid.

Detailed Specifications

How To Use

1. Connect red clamp to positive (+) and black to negative (–).
2. Plug into a standard 220–240V Indian mains socket.
3. Select battery type and programme on the unit.
4. The automatic 8-step cycle completes fully unsupervised.

What's Included in the Box

• CTEK Pro 25S 12V 25A Charger
• Battery clamps with cables
• User manual

Comparison: CTEK Pro 25S vs Generic Alternatives

Understanding the Technology

The CTEK Pro 25S uses an advanced 8-step automatic charging algorithm that analyses battery condition before delivering optimised current — preventing overcharge and sulphation common in India's high-temperature environments. Its constant-current/constant-voltage (CC/CV) topology ensures safe, precise charging for both Lead-Acid and LiFePO4 chemistries without manual intervention. This is the same professional standard used in authorised OEM service centres globally.

Warranty & Support in India

• Warranty: 2-year manufacturer warranty against manufacturing defects
• Customer Support: Monday–Saturday, 9 AM–6 PM IST. WhatsApp / Phone: +91 93112 11157 · hello@naredi.in
• Returns: 14-day return and exchange policy, COD returns accepted
• Delivery: Free delivery across India, Cash on Delivery available

Frequently Asked Questions

Yes, it is designed for 220–240V AC input, matching the standard Indian mains supply perfectly.

It supports all battery types found in Indian cars, SUVs, trucks, and diesel fleets — including AGM, GEL, WET, and LiFePO4, from 30Ah to 500Ah.

Contact our support team via WhatsApp / Phone: +91 93112 11157 or hello@naredi.in Monday–Saturday, 9 AM–6 PM IST.

Yes, COD is available with free delivery to all pin codes across India.