CTEK SmartPass 120S – 12V Dual Battery Manager, AGM & Lead-Acid

Product Description

The CTEK SmartPass 120S is a professional-grade automatic charger and dual battery manager designed for 12V AGM and lead-acid systems — one of the most capable automotive chargers available for Indian SUVs, campervans, and commercial fleets. It intelligently distributes up to 120A between starter and service batteries using your alternator, solar panels, or the CTEK D250SA. Built to withstand everything from Rajasthan's desert heat to Himalayan winters.

Features & Benefits

• 120A Output: Handles large battery banks in heavy-duty Indian commercial builds without overloading.
• Priority Charging Logic: Starter battery charges first; surplus flows automatically to the service battery — zero manual switching.
• Multi-Chemistry Support: Works across all common types of charger scenarios — lead-acid, AGM, EFB, and GEL batteries.
• Wide Voltage Range (10.5–23V DC): Tolerates India's frequent voltage fluctuations, protecting your batteries and the unit.
• Temperature Resilience (–20°C to +50°C): Performs reliably across India's extreme climate zones year-round.
• Overcharge & Discharge Protection: Built-in safeguards extend battery life — excellent value for money over time.
• CTEK D250SA Compatible: Pairs seamlessly to build a complete solar and lithium battery charger system for overlanding rigs.

Detailed Specifications

How To Use

1. Mount the unit in a ventilated spot near your battery compartment.
2. Connect input terminals to your alternator or DC source (10.5–23V).
3. Wire output terminals to starter and service batteries respectively.
4. Power on — fully automatic charging begins immediately.

What's Included in the Box

• CTEK SmartPass 120S Unit
• Mounting hardware
• User manual

Comparison: CTEK SmartPass 120S – 12V Dual Battery Manager, AGM & Lead-Acid vs Generic Alternatives

Understanding the Technology

The SmartPass 120S uses DC-to-DC power distribution with priority-based charge routing — a significant upgrade over simple isolator relays common in Indian fleet builds. Unlike basic 12V battery chargers, it monitors both battery banks simultaneously and adjusts current flow dynamically. This makes it ideal for dual-battery setups in Indian overlanding vehicles where alternator output and solar input must be managed together. The result is longer battery life and fewer roadside breakdowns on remote Indian highways.

Warranty & Support in India

• Warranty: 2-year manufacturer warranty against 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 common Indian SUVs like Fortuner, Thar, or Scorpio?

Yes — it works with any 12V lead-acid or AGM battery system, making it suitable for most Indian SUVs and commercial vehicles.

Will it get damaged by India's voltage fluctuations?

No — the wide 10.5–23V input range and built-in protection handle unstable power conditions safely.

How do I claim warranty in India?

Contact our team via WhatsApp / Phone: +91 93112 11157 or hello@naredi.in with your order details.

Is Cash on Delivery available?

Yes — COD is available with free delivery to all pin codes across India.