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CTEK
CTEK CS ONE 12V Smart Battery Charger with App Control - Professional Adaptive Charging
India's first adaptive 12V smart charger with smartphone app. Auto-detects battery type — no modes to select.
voltage
12V
current
10A
battery range
All 12V batteries
battery types
Auto-detect: WET, AGM, EFB, GEL, LiFePO4
connectivity
Bluetooth
app
CTEK App (iOS + Android)
steps
Adaptive automatic
warranty
5 years
₹29,900
+ 18% GST
Total incl. GST: ₹35,282
Free shipping across India
14-day returns
Authorized Distributor
Official dealer since 2014
100% Genuine
Sourced directly from CTEK
Replacement Warranty
Defective unit replaced, not repaired
Direct Support
About This Product
Why the CTEK CS ONE 12V?
Every other CTEK charger requires you to select the battery type — press MODE once for AGM, twice for Li, and so on. The CS ONE eliminates this entirely. It uses Bluetooth and the CTEK app to automatically detect your battery type, vehicle, and optimal charging profile. You never have to guess whether your car has AGM or EFB. Open the app, pair the charger, and it handles everything. For users who want zero complexity — especially those who are not technically minded — the CS ONE is the most future-proof CTEK charger available in India.
How It Works
The 4-step process explained
1
Auto Detection
Bluetooth connection to the CTEK app detects battery type, vehicle profile, and current condition automatically.
2
Adaptive Algorithm
Builds a custom charging profile for the specific battery — not a fixed 8-step program but a continuously adapting one.
3
App Monitoring
Real-time status, charge progress, and battery health visible on your smartphone.
4
Maintenance
Pulse maintenance mode automatically activated when charging is complete.
How To Use
Step-by-step instructions
Download the CTEK app on iOS or Android.
Connect the CS ONE to your battery (red to positive, black to negative).
Open the app — it automatically pairs and detects your battery type.
Tap Start — the charger handles everything from here.
Monitor progress on your phone from anywhere in the house.
Compatibility
Works with these vehicles
Compatible vehicles — common examples. If your vehicle is not listed, ask Arjun below — it almost certainly still works.
Any modern 12V car
Auto-detects battery type
Adaptive
Hyundai Creta / Tucson
AGM auto-detected
Adaptive
Tata Nexon EV (12V aux battery)
Auxiliary battery maintenance
Adaptive
MG ZS EV (12V aux battery)
Aux battery maintenance
Adaptive
All bikes with 12V battery
Auto-adapts to battery size
Adaptive
Don't see your vehicle? Ask Arjun — tell him your make, model and year for a direct answer.
Not suitable for: 24V trucks — use MXT series. 6V vintage cars — use XC 0.8.
How It Compares
vs other options
vs MXS 5.0: The MXS 5.0 requires you to manually select AGM mode. The CS ONE auto-detects and handles it. The CS ONE is also 10A versus 5A — faster. The ₹16,000 premium over the MXS 5.0 is for the app control and auto-detection convenience. vs NXT 5: The NXT 5 is also adaptive but without Bluetooth — the CS ONE adds smartphone connectivity.
FAQ
Common questions
How is a CTEK charger different from a cheap charger?
A basic charger pushes current until you disconnect it, which can overcharge and damage the battery. CTEK chargers use a multi-step algorithm — they assess battery condition, desulfate if needed, charge at the optimal rate, and switch to maintenance mode automatically. Safe to leave connected indefinitely.
Can I charge an AGM battery with a standard charger?
No — AGM batteries require a specific voltage ceiling and charging profile. A standard charger will overcharge an AGM battery and destroy it. All CTEK chargers with an AGM mode are safe for AGM batteries.
How often should I charge my car battery?
If you drive daily, your alternator keeps the battery charged. But if the car sits unused for more than 2 weeks, connect a charger. In Indian summers, charge and test every 3 months — heat is the primary cause of early battery death.
Is it safe to leave a CTEK charger connected for months?
Yes. CTEK chargers automatically switch to pulse maintenance mode once charging is complete. They deliver tiny pulses to keep the battery at 100% without overcharging. Many customers leave them connected for the entire monsoon/winter storage period.
Is naredi.in an authorized dealer?
Yes. naredi.in is the authorized distributor in India for CTEK, Rislone, OzCharge, Autool and Foxwell. Products are sourced directly from the brands — not grey market imports. Warranty is handled by naredi.in directly in India.
What is the return policy?
14-day returns from the date of delivery, hassle-free. Contact naredi.in via WhatsApp at +91 93112 11157 to initiate a return.
How long does shipping take?
Free shipping across India. Metro cities typically 2-3 days, other cities 3-5 days. Tracking is provided once dispatched.
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Ask Arjun
Not sure if this is right for your vehicle?
Tell Arjun your vehicle and situation — he'll give you a straight answer, not generic advice.
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Hi! I'm Arjun — naredi.in's automotive advisor. You're looking at the CTEK CS ONE 12V Smart Battery Charger with App Control - Professional Adaptive Charging. What's your vehicle or question?