CTEK CS-FREE, 12V, Portable Battery Charger, Smart Maintainer & Adaptive Booster Technology, UK Plug

TEK CS FREE – 12V Portable Battery Charger, Smart Maintainer & Adaptive Booster (UK Plug)

The CTEK CS FREE is an innovative all-in-one 12V battery solution that combines an adaptive booster, smart charger, maintainer, and power bank in one ultra-portable unit. Designed for both on-grid and off-grid use, the CS FREE gives you the freedom to revive dead batteries, maintain battery health, and charge personal devices wherever you are—without the need for jump leads or mains power.

Key Features

• ✅ Adaptive Boost Technology
  A smart alternative to jump-starting—revives a flat battery safely and quickly without damaging your battery or vehicle electronics.
• ✅ All-Purpose Battery Charger & Maintainer
  Charges and maintains any 12V lead-acid or lithium battery (LiFePO₄) using mains power, solar panels, or a 12V service battery.
• ✅ Off-Grid Capable
  Use solar panels or a separate leisure battery for completely portable charging and maintenance in remote areas—no mains required.
• ✅ High-Tech Power Bank
  Equipped with USB-C and USB-A ports for charging smartphones, tablets, laptops, cameras, and more on the go.
• ✅ Fully Automatic
  Intelligent electronics detect battery condition and apply the correct charge safely—no user settings needed.
• ✅ Safe for Vehicle Electronics
  Spark-free, short-circuit proof, and reverse polarity protected. Safe for modern cars with complex ECU systems.

Specifications

• Battery Types Supported:
  • 12V Lead-Acid (WET, MF, AGM, GEL, EFB)
  • 12V Lithium (LiFePO₄)
• Battery Capacity: 10–130Ah (charging) | Up to 180Ah (maintenance)
• Charging Current: Up to 5A
• Boost Output: Adaptive Boost – automatically controlled, not fixed voltage
• Input Options:
  • Mains power (via included UK plug)
  • 12V DC (from leisure battery)
  • Solar panel (via optional solar kit)
• USB Outputs:
  • USB-A and USB-C (for devices like phones, tablets, cameras)
• Operating Temperature: -20°C to +50°C
• Display: LED charge level and status indicators
• IP Rating: IP54 (dust and splash resistant)
• Dimensions: Approx. 248 x 98 x 78 mm
• Weight: Approx. 1.4 kg

Frequently Asked Questions (FAQ)

Q: What is Adaptive Boost, and how is it different from jump-starting?
A: Adaptive Boost safely analyzes your battery and delivers a controlled charge to gently revive a flat battery, unlike traditional jump-starts that can damage sensitive electronics.

Q: Can I use the CS FREE when there’s no mains power?
A: Yes! The CS FREE supports solar charging and 12V leisure batteries, making it perfect for off-grid adventures and emergency use.

Q: Is it suitable for lithium batteries?
A: Yes, it supports 12V lithium (LiFePO₄) as well as all standard lead-acid battery types.

Q: How long does Adaptive Boost take to power a dead battery?
A: Typically within 15 minutes, but timing depends on the battery’s condition and size.

Q: Can it charge my phone or laptop?
A: Absolutely. It functions as a USB power bank, with USB-A and USB-C outputs for device charging.

• All-in-one Solution: Power up flat batteries and keep your vehicle batteries in peak condition.
• Adaptive Booster: Say goodbye to jump cables and jump starter packs. CS FREE powers up your flat battery quickly and is completely safe for your battery and vehicle electronics.
• Charge and Maintain: Whether you're connected to mains power, or going off-grid, CS FREE keeps your 12V lead-acid or lithium (LiFePO4) battery in peak condition.
• Off-grid Charging: Utilize solar energy or a separate leisure battery to power the CS FREE, enabling you to charge vehicle batteries while far away from the power grid.
• Hi-Tech Power Bank: No power? No problem. Charge up your laptops, smartphones, tablets and cameras whenever they need it with USB-A and USB-C ports.