CTEK CS One – 12V Charger for AGM, EFB, GEL & Lithium Batteries

Product Description

The CTEK CS One is a premium automatic charger and 12V battery charger engineered in Sweden for Indian car owners, workshops, and fleet managers. It safely charges AGM, EFB, GEL, and Lithium batteries in vehicles like Maruti, Tata, Mahindra, Honda, and Royal Enfield, handling India's voltage fluctuations and monsoon storage demands with ease.

Features & Benefits

• Adaptive Charging: Auto-detects all battery chemistries — no manual switching, ideal for mixed workshop use.
• Universal Input (100–240V): Built for India's voltage fluctuations, protecting your 12v battery and charger investment reliably.
• Bluetooth App Control: Monitor your automotive charger live via the CTEK app on iOS or Android.
• 8-Step Desulphation: Revives deeply discharged batteries after long monsoon storage or extended parking.
• Spark-Proof Safety: Reverse polarity and short-circuit protection — safe in dimly lit Indian garages.
• Diesel & Start-Stop Ready: Supports def in diesel engine vehicles and modern EFB-based start-stop systems.
• Genuine Swedish Origin: Authorised CTEK product — not a grey-market duplicate common on unverified platforms.

Detailed Specifications

How To Use

1. Download the free CTEK app on your Android or iOS device.
2. Connect red clamp to positive terminal, black to negative.
3. Plug into any standard Indian 230V wall socket.
4. Select battery type in the app — charging begins automatically.

What's Included in the Box

• CTEK CS One Charger Unit
• Clamp Cable Set
• User Manual

Comparison: CTEK CS One – 12V Charger for AGM, EFB, GEL & Lithium Batteries vs Generic Alternatives

Understanding the Technology

The CTEK CS One uses adaptive pulse charging combined with an 8-step algorithm that manages desulphation, soft start, bulk charge, absorption, and maintenance phases automatically. This multi-stage approach maximises the lifespan of a 12v battery charger-compatible battery by preventing overcharging — a critical concern given India's extreme summer temperatures and erratic grid supply. Bluetooth telemetry allows real-time state-of-charge monitoring, a feature professional workshops and fleet managers increasingly rely on for predictive maintenance.

Warranty & Support in India

• Warranty: 1-year warranty against manufacturing defects
• Customer Support: Monday–Saturday, 9 AM–6 PM IST. WhatsApp / Phone: +91 93112 11157 · hello@naredi.in — support in English and Hindi
• 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 vehicles like Maruti Swift or Tata Nexon?

Yes — the CS One supports all common car battery charger types used in Indian vehicles, including AGM and EFB batteries found in modern start-stop models.

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

Absolutely — the universal 100–240V input handles voltage fluctuations common across Indian cities and towns without any additional stabiliser.

How do I raise a warranty claim?

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.