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

Product Description

The CTEK Pro 25S is a professional-grade automatic charger delivering 12V 25A output — the most powerful lithium battery charger and lead-acid solution in one compact automotive charger. Built for Indian workshops, fleet operators, and serious enthusiasts, it handles every battery chemistry found in Indian cars, trucks, and SUVs. Engineered to withstand India's voltage fluctuations, monsoon humidity, and extreme heat.

Features & Benefits

• 25A Fast Charging: Dramatically cuts turnaround time in high-volume Indian service centres.
• Dual Chemistry Support: One types charger covering AGM, GEL, WET, Ca/Ca, and LiFePO4 — no extra battery charger for 12v battery types needed.
• RECOND Mode: Revives deeply discharged batteries after long monsoon storage periods.
• Temperature Compensation: Reliable from -20°C to +50°C across all Indian climatic zones.
• Power Supply Mode: Stable 13.6V output protects sensitive ECU electronics during reprogramming.
• IP44 Weather Resistance: Dust and splash-proof for humid, monsoon-prone Indian garages.
• Surge Protection: Spark-proof, reverse-polarity, and short-circuit safe on India's unpredictable grid.

Detailed Specifications

How To Use

1. Connect red clamp to positive (+) and black clamp 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 adaptive charging algorithm that analyses battery condition before delivering the optimum current, preventing overcharging and sulphation — a common cause of premature battery failure in India's high-temperature climate. Its CCCV (Constant Current / Constant Voltage) methodology ensures both 12 volt battery and charger compatibility across a wide Ah range, making it equally suited for small hatchbacks and large commercial vehicles. Unlike basic chargers, the microprocessor-controlled cycle adjusts in real time, maximising battery life and safety.

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 (English & Hindi)
• Returns: 14-day return and exchange policy, COD returns accepted
• Delivery: Free delivery across India, Cash on Delivery available at all pin codes

Frequently Asked Questions

Is this compatible with Indian cars like Maruti, Hyundai, and Tata vehicles?

Yes — it works with all 12V lead-acid and LiFePO4 batteries used in Indian passenger cars, SUVs, and commercial vehicles.

Will it work safely with India's unstable power supply?

Absolutely — it accepts 220–240V AC input and includes surge and reverse-polarity protection for India's grid conditions.

How do I claim warranty in India?

Contact us via WhatsApp / Phone: +91 93112 11157 or hello@naredi.in with your order details and we'll assist you promptly.

Is Cash on Delivery available?

Yes — COD is available with free delivery to all Indian pin codes.