Description
CTEK CS FREE® — Adaptive Booster & Portable Battery Charger
The CTEK CS FREE® is an advanced all-in-one power solution designed to get you back on the road—anywhere, anytime. Combining intelligent Adaptive Boost technology with a portable charger and maintainer, it safely powers up flat 12V batteries without the need for jump cables or external power. Whether you’re at home, on the move, or completely off-grid, the CS FREE® ensures your battery and your essential devices stay fully charged and ready to go.
With its innovative Adaptive Boost feature, the CS FREE® automatically analyzes your battery’s condition and delivers the optimal power needed to revive it safely—without risking damage to your vehicle’s electronics. Perfect for cars, motorcycles, boats, and recreational vehicles, it supports all 12V lead-acid and lithium (LiFePO₄) batteries.
When you’re off-grid, connect the CS FREE® to a solar panel or service battery using optional CTEK accessories to maintain power wherever you are. Equipped with both USB-C and USB-A ports, it also functions as a high-capacity power bank, letting you charge laptops, smartphones, and tablets on the go.
Built with a sleek, durable design and intuitive LED display, the CS FREE® offers effortless operation—simply connect it and let the system handle the rest. A countdown indicator shows both the time remaining to start your vehicle and how long until a full charge is achieved.
Engineered for safety, performance, and convenience, the CS FREE® is your reliable companion for every journey.
Key Features:
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All-in-One Functionality: Adaptive Booster, battery charger, maintainer, and portable power bank.
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Jump Cable Alternative: Safely powers up flat batteries in minutes without damaging vehicle electronics.
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Flexible Charging Options: Recharge via wall outlet, solar panel, vehicle 12V socket, or separate service battery.
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Universal Battery Support: Compatible with 12V lead-acid and lithium (LiFePO₄) batteries.
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Smart Display: Simple LED indicators with countdown to start and full charge.
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Device Charging: Dual USB-C and USB-A outputs for charging laptops, phones, and tablets.
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Durable Design: Compact, robust housing with IP54 protection for outdoor use.
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Peace of Mind Warranty: Backed by a 2-year limited warranty.
Technical Specifications:
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Input: USB-C, 5–25 VDC, 3A (max 60W)
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Output: 12 V, 20 A (max 240W)
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Battery Compatibility: 12V lead-acid (WET, MF, Ca/Ca, AGM, EFB, GEL) and LiFePO₄
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Battery Capacity: 10–130 Ah
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Protection Rating: IP54
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Dimensions: 9.7 × 3.9 × 3.1 in | Weight: 3.1 lbs
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Internal Battery: 66 Wh Li-ion polymer, 300-cycle lifespan
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Operating Temperature: –20°C to +50°C (–4°F to +122°F)
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Included: USB-C power adapter and charging cables
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Warranty: 2 years
Ideal For:
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Car and motorcycle owners
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RV and boat users
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Off-grid enthusiasts and adventurers
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Emergency preparedness kits
Stay powered wherever you are — with CTEK CS FREE®, you’re never stranded.
