CTEK

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

✓ Authorized CTEK Dealer for India

SKU: SKU :40-194

Rs. 53,900.00

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Since 2014

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Pan-India

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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. 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: Drastically cuts turnaround time 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

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 single chemistry
Voltage Safety	Handles Indian grid fluctuations	No surge protection
Warranty	2-year manufacturer warranty	No reliable warranty
Weather Rating	IP44 certified	No rated protection

Understanding the Technology

The CTEK Pro 25S uses adaptive multi-step charging logic — automatically adjusting current and voltage based on the battery's state of charge and internal resistance. This prevents overcharging, a critical concern given India's frequent power surges. The battery charger for 12v battery applications uses desulphation pulses in early charge stages to restore degraded lead plates, extending battery service life significantly in high-heat Indian conditions.

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