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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 battery charger in its class, delivering 25A for Lead-Acid and LiFePO4 batteries. Built for Indian workshops, fleet operators, and serious enthusiasts, it handles India's voltage fluctuations, monsoon humidity, and extreme heat. Compatible with every battery type found in Indian cars, trucks, and SUVs — a true all-in-one automotive charger.
Features & Benefits
- 25A Fast Charging: Cuts turnaround time dramatically in high-volume Indian service centres.
- Dual Chemistry Support: One 12v battery and charger solution covering 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 — covers every Indian climatic zone.
- IP44 Weather Resistance: Dust and splash-proof for humid, monsoon-prone Indian garages.
- Surge & Spark Protection: Reverse-polarity and short-circuit safe — essential for diesel fleet maintenance 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 vs Generic Alternatives
| Feature | CTEK Pro 25S | Generic Alternatives |
|---|---|---|
| Authenticity | Genuine, original product | High duplicate risk |
| Chemistry Support | Lead-Acid + LiFePO4 | Usually one type only |
| Voltage Safety | Built for Indian grid fluctuations | Often no protection |
| Warranty | 2-year manufacturer warranty | No reliable warranty |
| After-Sales | Naredi India support team | No local support |
Understanding the Technology
The CTEK Pro 25S uses an 8-stage adaptive charging algorithm that monitors battery state-of-charge and adjusts current dynamically — preventing overcharge, sulphation, and cell damage. This constant-current/constant-voltage (CC/CV) methodology is what separates a professional car battery charger from a basic trickle charger. The dedicated LiFePO4 programme ensures lithium batteries receive the precise charge profile they require, extending cycle life significantly.
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
Is this compatible with Indian cars like Maruti, Mahindra, and Tata?Yes — the CTEK Pro 25S supports 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 is rated for 220–240V AC input with built-in surge and spark protection designed for Indian grid conditions.
How do I claim warranty or raise a return?Contact WhatsApp / Phone: +91 93112 11157 or email 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.
- Battery Jump Starter: Why the OzCharge RM 1000 Supercapacitor Unit Is the Smartest Buy for Indian Car Owners
- 12V Battery Charge Time Calculator: How Long to Fully Charge Your Car Battery in India (And Never Overcharge Again)
- Battery Charge Time Calculator: How the CTEK Indicator Panel Tells You Exactly When Your Car Battery Is Full