CTEK’s powerful new revolutionary CS ONE is a smart, versatile and easy-to-use battery charger.

CTEK’s new APTO™ (Adaptive Charging) technology does all the thinking so you don’t have to. In a world with so many different battery chemistries and charging requirements, the CS ONE is perfect for every need. CS ONE automatically detects the battery’s chemistry, works out its size and then delivers the perfect, customised charging programme, from 2 to 8 amps.

CTEK’s free-to-download App gives users even greater control of the versatile CS ONE charger through their smartphone. Using Bluetooth connectivity, the App unlocks additional great features such as RECON (to restore and recondition lead-acid batteries), WAKE UP (to revive seemingly dead lithium and lead-acid batteries) and 12V SUPPLY (to support the battery during service work and retain contact power during replacement or removal).

Engineered for complete safety and peace of mind, CS ONE comes with black, polarity-free and spark-free clamps and automatically works out which terminal is positive and which is negative (the clamps can even safely come into contact with each other).

Although boats, motorhomes and cars can have up to five different battery chemistries, the CS ONE is compatible with them all. There are no buttons to push or modes to select, simply connect those clamps to any 12v lead-acid or lithium (LiFePO4) battery and let it go to work. CS ONE’s easy-to-follow countdown LEDs give a visual indication about the time remaining for the battery to be fully charged and even when the flat battery can be restarted. It will also say if the battery cannot be charged due to damage.

It comes with a five-year warranty and is available now through Lusty and Blundell’s Albany, Whangarei and Tauranga showrooms and from their nationwide network of marine dealers.

L&B tech road show

Lusty & Blundell has undertaken a comprehensive winter road show, highlighting the latest advances and innovations in marine technologies.

The tour, which will initially target technical dealers and marine electricians, will showcase ground-breaking products such as the award-winning CTEK CS Free portable battery charger, Vesper Marine’s innovative Cortex VHF/monitoring/control system, lithium batteries, electric outboards and trolling motors, and the latest range of Raymarine marine electronics.

The road show will also feature new marine camera technology from FLIR and the latest updates to Raymarine’s innovative LightHouse operating system.

The informative road show will initially be held in Lusty & Blundell’s three branches at Albany, Whangarei and Tauranga.


CTEK’s new CS FREE portable battery charger can recharge a flat battery in just 15 minutes, even when nowhere near a power outlet.

A ‘must-have’ for boaties and vehicle owners, CS FREE uses a plug-in detachable DC clamp cable to connect to the battery connection points. CTEK’s Adaptive Boost technology then automatically works out the quickest and safest way to power up the battery so that, in just 15 minutes, it will have enough power to restart the engine.

Unlike most ‘boosters’, CS FREE is sensitive to the state of the battery and supplies just enough charge to get the boat or vehicle going, avoiding damage to the battery and the electronics. When fully charged the internal battery will remain ready to use for up to a year. CS FREE can be charged up and powered using solar power or a 12v battery and can also be used for maintenance charging.

Featuring an LED display that shows time left until the battery is fully charged, CS FREE works with all types of 12v lead-acid and lithium batteries. It has USB-C and USB-A outlets to charge laptops, smartphones and tablets.

Supplied in a tough, durable case, it comes with a two-year warranty.