In stock CTEK MUS4.3 TEST&CHARGE Sea Tech 12V Battery Charger Test & Charge Battery Tester 1 Year Warranty

The latest model purchased in 2023 (sale item) The final sale of the sale item with scratches on the exterior package! Few only. [With 1 year warranty]
Time sale started! Hurry up.

Estimated delivery time is 2-3 weeks after stock is sold out.

CTEK latest charger!! Japanese instruction manual and 1 year warranty included.
Introducing the latest charger from CTEK, known as the smartest charger ever, the charger with the brain.
CTEK is a high-performance, high-performance battery charger that has sold over 2.5 million units worldwide.
For Ferrari, Porsche, Aston Martin, Bentley, Harley Davidson, Mercedes, Maserati, Lamborghini, Lexus, Yamaha, etc.
The same product is supplied by OEM and is recommended for use as a battery charging and maintenance tool.

The MUS 4.3 Test & Charge integrates an advanced microprocessor-controlled battery charger with battery and alternator testing capabilities to provide the ultimate in battery testing, charging and maintenance capabilities. While in charge mode, this unit performs great with batteries from 1.2Ah to 110Ah. It solves a wide range of battery problems and features, including a patented automatic sulfate desorption program. The charger has a special regeneration function that revives and restores the discharged multilayer battery.

The patented float/pulse maintenance makes it ideal for long term maintenance. RECOND and SNOWFLAKE modes work individually or simultaneously with both 0.8A and 4.3A programs, offering great flexibility to the user. Test Mode has three easy-to-use programs to test battery voltage, starting power and alternator performance, giving you a complete picture of the health of your battery and vehicle charging system. MUS 4.3 Test & Charge is easy and safe to use and protects vehicle electronics, spark free, reverse polarity protection and short circuit protection.

This is a next-generation charger and maintainer that enables full-fledged Ctek 8-step charging from motorcycles to automobile batteries.
Another major feature is that the current charging step status can be displayed in detail with eight LEDs. Compared to the conventional US3300's 4-step charging, it has 8-step charging, which not only greatly improves charging accuracy, but also has a reconditioning mode (15.8v/1.5A) that activates damaged batteries.

Part No. 40-206
Input voltage 100VAC
Charge voltage 14.4/14.7/15.8V
Charge current Max 4.3A
Type of charger 8 steps, fully automatic charging cycle, 3 voltage test programs
Type of battery 12V lead-acid batteries (Wet, MF, AGM, GEL)
Battery Capacity 1.2-110 Ah, up to 160 Ah for maintenance
Insulation IP65 (splash and dust proof)

Maximizing Vehicle Battery Performance Swedish company CTEK AB invented the latest smart car charger for consumers almost 20 years ago. CTEK chargers use unique and patented technology to ensure batteries are charged easily, safely and optimally maintained. CTEK chargers can also monitor battery health and take appropriate action to maximize battery capacity and life.

Battery-related issues are the number one reason for US auto breakdown assistance callouts. Regular use of a CTEK charger will keep your battery in optimum condition and save you the cost, inconvenience and frustration of unplanned battery failure. For less than the price of a new battery, CTEK battery chargers are a worthwhile investment for your car, truck, boat, motorcycle, ATV, lawn and garden equipment, and more. Learn more about CTEK battery management products on our official website.


Reliable in all conditions, the Swedish-designed CTEK Smart Charger is extremely rugged and weather resistant. Most chargers have an operating temperature range of +122 degrees Fahrenheit and best stay between -4 degrees Fahrenheit and 1 degree Fahrenheit. There are also CTEK "Polar" chargers with features such as special cables that work in very cold conditions and unique charging parameters.

CTEK battery chargers are shockproof, weatherproof, dustproof and fully approved for year-round outdoor use (IP44-IP65). So no matter where you park your CTEK battery charger will always be ready to go.

prolong battery life
Regular use of the CTEK battery charger has been proven to extend vehicle battery life by up to 3x.

Vehicle batteries are optimally charged and maintained through a series of charging stages (4, 6, 8 steps, depending on unit) to improve battery performance and extend battery life.

CTEK battery chargers are capable of desulphurizing, charging, reconditioning and maintaining all types of vehicle batteries including wet/flooded, calcium, gel, lithium (with CTEK lithium chargers) and the latest Start-Stop AGM and EFB technologies. increase. A patented float-and-pulsate maintenance strategy ensures that once fully charged, the battery is safely maintained at maximum capacity by the charger indefinitely, maximizing battery life.

Many CTEK battery chargers have a RECOND feature. This function, combined with the desulfurization function, can restore the capacity of many batteries that would otherwise not be able to accept charging. It can also rejuvenate heavily discharged batteries.


Trustworthy OS Supplier
CTEK manufactures battery chargers for the world's premium automakers including Audi, Bentley, BMW, Corvette, Ferrari, Jaguar, Koenigsegg, Lamborghini, Maserati, McLaren, Mercedes, Porsche and Rolls-Royce. These well-known and selective OE customers trust the superior quality, value and technical performance of CTEK chargers to sell them under their own brand.


Advantages of low ripple
CTEK battery chargers and maintainers produce very clean voltages and currents that are safe for batteries and vehicle electronics, regardless of how long the charger is connected.

Current ripple in excess of 5%, which is common in less advanced battery chargers, will cause the positive battery electrode to age, while high voltage ripple can harm sensitive and expensive vehicle electronics. . Why is the risk of using a "CTEK imitation" charger an issue?


Safe for vehicles and users
The CTEK battery charger's advanced electronics ensure that it is extremely safe to use. Chargers, for example, feature spark and reverse polarity protection. If the clamps are accidentally reversed or touched, the charger will detect the error, stop working, and display an error light to indicate the fault. All CTEK charger safety features are developed to protect you, your battery, and your vehicle.