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CTEK
CTEK Pro 25S – 12V 25A Charger for Lead-Acid & LiFePO4 Batteries
SKU: SKU :40-194
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Description
Description
Product Description
The CTEK Pro 25S is a professional-grade automatic charger and the most powerful 12V automotive charger in its class, delivering 25A for Lead-Acid and LiFePO4 batteries. Designed for Indian workshops, fleet operators, and serious enthusiasts, it handles India's voltage fluctuations and extreme heat up to 50°C with confidence.
Features & Benefits
- 25A Fast Charging: Cuts turnaround time dramatically in high-volume Indian service centres.
- Dual Chemistry Support: Charges AGM, GEL, WET, Ca/Ca, and LiFePO4 — one unit replaces several chargers.
- 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: Accurate from -20°C to +50°C, covering every Indian climatic zone.
- IP44 Weather Resistance: Dust and splash-proof — ideal for humid, monsoon-prone Indian garages.
- Surge & Spark Protection: Reverse-polarity and short-circuit safe on India's unpredictable grid.
Detailed Specifications
| Specification | Details |
|---|---|
| Input Voltage | 220–240V AC |
| Output | 12V, 25A max |
| Lead-Acid Range | 40–500Ah (WET, MF, AGM, GEL, Ca/Ca) |
| Lithium Range | 30–450Ah (LiFePO4) |
| Temperature Range | -20°C to +50°C |
| Protection | Spark-proof, reverse polarity, short-circuit, IP44 |
| Warranty | 2 years manufacturer warranty |
How To Use
- Connect red clamp to positive (+) and black to negative (–).
- Plug into a standard 220–240V Indian mains socket.
- Select battery type and programme on the unit.
- 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 – 12V 25A Charger for Lead-Acid & LiFePO4 Batteries vs Generic Alternatives
| Feature | CTEK Pro 25S | Generic Alternatives |
|---|---|---|
| Authenticity | Genuine, original product | High duplicate risk |
| Chemistry Support | All types incl. LiFePO4 | Usually lead-acid only |
| Voltage Safety | Built for Indian grid fluctuations | No surge protection |
| Warranty | 2-year manufacturer warranty | No reliable warranty |
| After-Sales | Dedicated India support | None available |
Understanding the Technology
The CTEK Pro 25S uses an intelligent 8-step adaptive charging algorithm that analyses battery condition before applying the correct charge profile — preventing overcharge and sulphation, two of the most common causes of premature battery failure in India's high-temperature climate. The desulphation and conditioning stages restore lost battery capacity, extending service life significantly. Power Supply Mode maintains a steady 13.6V DC output, essential when technicians perform ECU flashing or ADAS calibration on modern vehicles without disconnecting the battery.
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
Will this automatic charger work with India's 220–240V mains supply?Yes, the CTEK Pro 25S is designed for 220–240V AC — the standard Indian mains voltage — and includes built-in surge protection for India's variable grid.
Is this automotive charger compatible with both car and two-wheeler batteries?It supports Lead-Acid batteries from 40Ah and LiFePO4 from 30Ah, covering most Indian cars, SUVs, and commercial vehicles.
How do I claim warranty in India?Contact our team via WhatsApp / Phone: +91 93112 11157 or hello@naredi.in, Monday–Saturday, 9 AM–6 PM IST.
Is Cash on Delivery available?Yes, COD is available with free delivery to all pin codes across India.
Complete Your Kit
Everything you need for complete vehicle care
- Test before you charge: Battery Testers →
- Diagnose the root cause: OBD Diagnostic Tools →
- Emergency backup: Jump Starters →
- Keep fluids healthy: Performance Additives →
Further Reading
Our guides will help you get the most out of this product.
- Your Car Battery Can Silently Drain Your Home Inverter Too — Here Is the One Tool Every Indian Car Owner Needs
- The Only Car Jump Starter That Never Dies on You: OzCharge RescueMate 750 Reviewed for Indian Conditions
- Battery Jump Starter: Why the OzCharge RM 1000 Supercapacitor Unit Is the Smartest Buy for Indian Car Owners