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CTEK (56-158) MULTI US 3300 12 Volt Fully Automatic 4 Step Battery Charger

4.5 4.5 out of 5 stars 1,227 ratings

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Brand CTEK
Color Silver
Item Weight 1.1 Pounds
Input Voltage 12 Volts

About this item

  • CTEK 12V Multi US 3300 Battery Charger P/N 56-158
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CTEK (56-158) MULTI US 3300 12 Volt Fully Automatic 4 Step Battery Charger
CTEK (56-158) MULTI US 3300 12 Volt Fully Automatic 4 Step Battery Charger
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PriceCurrently unavailable.$291.00$176.74-13% $69.95
List:$80.67
-20% $99.95
List:$124.95
-22% $69.95
List:$89.95
Delivery
Get it as soon as Tuesday, Mar 26
Get it Mar 29 - Apr 2
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Easy to use
4.6
4.8
4.4
4.6
Value for money
4.3
4.4
4.3
4.4
Safety Features
5.0
4.8
4.4
Easy to install
4.6
4.3
4.7
Sold By
LGA PARTS PERFORMANCE
GM Parts Authority
R/A Hoerr Incorporated
Amazon.com
Amazon.com
input voltage
12 volts
2 volts
120 volts
120 volts
weight
1.1 pounds
1.75 pounds
1.39 pounds
3.99 pounds
1.59 pounds

Product Description

The CTEK MULTI US 3300 is a versatile battery charger in a compact format that makes it convenient and easy to charge and maintain all household vehicles. The special cold mode means that you can charge during the extreme winter months without problem. It is perfect for everyday vehicles as wells as vintage vehicles, RV's, boats, motorcycles, ATV's, lawnmowers and tractors. This charger specifically developed for different needs, vehicles and batteries.

It is a fully automatic (connect and forget) 4 step charger. Once switched to the preferred mode, the charger takes its own readings and then begins to charge the battery. Once the battery is charged, it will automatically switch to its maintenance phase. The patented pulse charging process is arguably the most caring mode for a battery connected for a long time.

Unused batteries lose their power and their life is shortened through sulphation. It is more difficult to charge sulfated batteries. The US 3300 has a patented method for reconditioning sulfated batteries. The charger analyzes the state of the battery and , if possible, recovers the battery and its power.

All CTEK chargers are designed to consider the safety of the user. They are spark free, making the connection much easier and safer. They are also protected from reverse polarity connections and short circuit proof protecting the sensitive electronic systems in vehicles today. If the battery is connected backwards the charger will show a red light and not charge until it is properly connected to the battery.

The Multi US 3300 battery charger has a 5 year Limited warranty

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please Click here [PDF ]

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CTEK (56-158) MULTI US 3300 12 Volt Fully Automatic 4 Step Battery Charger


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What's in the box

  • 1 CHARGER, CLAMPS, EYELETS
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    1,227 global ratings

    Customers say

    Customers like the performance, charging, battery life, ease of use, and quality of the battery charger. For example, they mention that it works very well, it charges really well, and it maintains a trickle charge. That said, they say it's easy to understand and use, with well written instructions.

    AI-generated from the text of customer reviews

    302 customers mention271 positive31 negative

    Customers like the performance of the battery charger. They say it works very well at keeping the battery at the optimal charge, is easy to install, and effective. Customers also say it performs with no fuss and cycles to charge and maintain batteries for a variety of vehicles. They mention that the charging part seems to work well, and it works great to set it and forget.

    "...It's simple to set up and operate* Frankly, it works great!..." Read more

    "...not changing to fully charged state, but at least the charging part seems to work well...." Read more

    "...It worked perfectly! I didn't hard-wire it, I just used the included battery clamps. Car was stored in a heated garage, and hooked up to this...." Read more

    "...first time user: the cigarette lighter adapter (sold separately) works great, but the first time I tried to use it, it wouldn't insert into the..." Read more

    211 customers mention207 positive4 negative

    Customers are satisfied with the charging capabilities of the battery charger. They mention that it is an intelligent charger, it fully charges the battery and then goes into maintenance mode. Some appreciate that it slowly recharges the cells.

    "...This charger has several different modes, too. I just left it on the normal car mode. I wasn't sure if it needed the winter mode or not...." Read more

    "Surely it is an intelligent charger. And which can stay safely connected indefinitely to keeping up a needy and charging battery...." Read more

    "...unit does get warm at first, but then goes into the mode and slowly recharges the cells...." Read more

    "...These are the best Battery chargers in the WORLD!!!" Read more

    182 customers mention147 positive35 negative

    Customers like the battery life of the tablet computer. They say it keeps a battery fully charged and de-sulfides it. They also appreciate that it monitors and doesn't over charge the battery. Customers also say the performance has been amazing and the battery is always topped up.

    "...Well, at least according to the device, the battery is fully charged...." Read more

    "...This charger helped me revive a drained battery overnight...." Read more

    "...Original writeup> Very nice unit. Very well designed. Very healthy for batteries...." Read more

    "...They will keep a battery fully charged, but, more importantly, will de-sulfide a battery that you might have given up for dead...." Read more

    154 customers mention144 positive10 negative

    Customers find the charger easy to use. They say it requires no complex setup, the instructions are well written, and the charger and cables are of high quality. Customers also appreciate the plug extension that makes hooking up the charger so easy. They mention that the charger keeps the battery charged and ready to start without any problems. Customers say the purchase was a no-brainer.

    "...It can be attached for long term storage* It's simple to set up and operate* Frankly, it works great!..." Read more

    "...Charge my batteries and keep them charged.. Simple request, simple enough task. Or is it?..." Read more

    "I love this charger, easy to use, set and forget type of product...." Read more

    "...It requires no complex setup and even automatically detects when it has been connected with reverse polarity...." Read more

    145 customers mention126 positive19 negative

    Customers like the quality of the charger. For example, they mention it's well made, rugged, and idiot proof. Some say that it holds more charge and lasts longer than other chargers. Overall, customers are satisfied with the product's quality and functionality.

    "...it was specifically rated to charge AGM batteries and the durability reviews were good...." Read more

    "...It is beautifully constructed out of high quality materials, and works brilliantly to charge and maintain batteries for a variety of transportation..." Read more

    "...Overall, this product is fantastic, I have nothing but priase for this product. Try it and you will be pleased." Read more

    "The CTEK 56-158 is small, well-built and virtually identical to the Porsche charger...." Read more

    82 customers mention82 positive0 negative

    Customers are satisfied with the value of the charger. They mention that it's a nice less expensive choice for healthy trickle charging, and it saves them a lot of money. Customers also say that it is a great environment and money saver.

    "...This one is a nice less expensive choice as a CTEK for "healthy trickle charging maintenance", but the lack of extra features would lead me..." Read more

    "...regularly, seem to last longer so this charger is a great environment and money saver!..." Read more

    "...This is an inexpensive, fool proof charger that will save your $140 Miata AGM battery. Get one!" Read more

    "...At any rate, it's a nice little "smart-charger" and a good value for the price...." Read more

    58 customers mention54 positive4 negative

    Customers are satisfied with the size of the charger. They say it is compact, takes up very little space, and has a carrying case that is plenty big. Some say the product is bigger in real life than the photo makes it appear, and that it is easy to put in a bin or pocket in the car when not in use. The carrying case also holds the various components for easy storage. Overall, customers are happy with the product's size and functionality.

    "...The charger is so conveniently small that I just placed it under some gaps in my engine bay and routed an orange extension cable through a gap under..." Read more

    "...costs more than some of the dumb battery chargers, but this one takes up less space, comes with valuable accessories, and provides enough current to..." Read more

    "The CTEK 56-158 is small, well-built and virtually identical to the Porsche charger...." Read more

    "...The 3300 was just the ticket ... compact size and full featured with the ability to charge lead-acid and AGM batteries...." Read more

    27 customers mention13 positive14 negative

    Customers are mixed about the temperature of the charger. Some mention that the unit is tidy, never gets warm, and the charger body does not generate much heat. They say it's perfect for winter use as car sits idle. However, others say that it gets very hot and always remains warm to the touch.

    "...am confident to leave it plugged in when not in use and the charger is not overheated because it does not have to go through all the steps..." Read more

    "...Everything shut off and the unit did not turn back on, it was excessively hot! At that point i feared that the unit had fried and that was that...." Read more

    "...The unit is tidy, never gets warm, and is easy to put in a bin or pocket in the car when not in use...." Read more

    "...both Optima and regular lead and marine batteries. It works well but it runs HOT! Really HOT. HOT enough to where..." Read more

    Cables too short
    4 Stars
    Cables too short
    Excellent charger, great quality. But I found the battery connect cable to be too short for my 981 Cayman. Once connected to the positive port, the negative cable was not long enough to reach any ground ports. I had to adapt extensions to connect to a grounding port, and then to exit the cable thru the brake fluid reservoir checking hole on the maintenance cover. Because I did not want to cut a hole in the plastic cover or pinch it thru sides of the plastic cover.
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    Top reviews from the United States

    Reviewed in the United States on April 28, 2014
    4 people found this helpful
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    Reviewed in the United States on July 13, 2019
    Reviewed in the United States on April 15, 2019
    3 people found this helpful
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    Reviewed in the United States on January 28, 2018
    40 people found this helpful
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    Top reviews from other countries

    neekamv8
    5.0 out of 5 stars Don't leave home without one?
    Reviewed in Canada on October 29, 2019
    Ricardo R.
    5.0 out of 5 stars Muy buen servicio.
    Reviewed in Mexico on October 8, 2019
    Brent & Misty
    5.0 out of 5 stars Top quality battery tender
    Reviewed in Canada on November 7, 2021
    Alexandro Gómez Z.
    5.0 out of 5 stars Excelente
    Reviewed in Mexico on June 6, 2019
    Amazonian
    5.0 out of 5 stars Works on a majority of 12v batteries. Lead-acid, AGM etc
    Reviewed in Canada on August 17, 2018
    One person found this helpful
    Report