Expert Service 1-877-289-7664 [Hours]

Sonic Closeout Sale

CTEK MULTI US 3300

12V Smart De-Sulfating Battery Charger for Lead Acid Batteries

Out of Stock - Backorder
|

List price $74.99

You Save: $10.00 (13.34%)

$64.99

with warranty

+ FREE Shipping in US 48

Add an Extended Warranty

Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

Get FAST answers from customers ASK a Question See questions answers

Top Brand Trusted

CTEK supplies battery chargers to the most reputable Automotive and PowerSport manufacturers in the world and have encouraged customers to invest in these smart battery chargers to keep money in your wallet. These battery chargers are designed to regulate the amount of voltage in order to protect your electrical equipment while providing you with a significantly longer lasting battery.

12V Compact Battery Charger

The CTEK MULTI US 3300 is a compact multiuse battery charger that conveniently charges and maintains all household vehicles. The Multi US 3300 has a 4 step process to accurately read and communicate with your battery to avoid improper charging. This charger can be connected for months at a time making it ideal for motorcycles, lawn mowers, personal watercrafts and other vehicles up to 120Ah. The cold mode feature allows you to charge during extremely harsh winter conditions without any problems and is the most popular and versatile smarter charger within its class.

CTEK MULTI US 3300
  • 12V Smart Battery Charger
  • Output power is reduced at lower input voltage
  • Designed to charge 12V lead-acid batteries such as Wet, MF, Gel, (Absorbed Glass Mat (AGM) and Calcium from 12Ah to 75Ah (charging) and 12-120Ah (maintenance)
  • 1.3mA back current drain
  • 3.3A Max Charging Current
  • Four step fully automatic charging types with pulse maintenance modes; desulphation, bulk, absorption, and pulse charging
  • Special cold mode allows user to charge during cold winters days without problems
  • Compact design with mounting holes allows for permanent assembly
  • Charger may be connected for months making it ideal for motorcycles, cars, lawn mowers, jet skis and any other vehicle with batteries up to 120Ah
  • Includes two interchangeable connection leads, one with clamps, and one with eyelet terminals
  • 1-year Manufacturer's warranty

Battery Charger Specifications

Charger Type
This is the type of battery charger.
12V Charger
Included Accessories
These are the charging accessories that are included with the product
8.4mm Eyelet Adapter
Alligator Clamps

Warranty and Return Policy

Parts Warranty Duration
5 years
Labor Warranty Duration
5 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
80%
4 Star
20%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.6
Features
4.6
Design
4.8
Usability
5.0
Pat

Galena, md

Overall
Durability
Value
Features
Design
Usability
Good charger

June 15, 2012

Works well. Easy to use. Kept my Porsche battery charged all winter.

2 of 3 found this helpful

Was this review helpful to you?

Lg

Centralia, WA

Overall
Durability
Value
Features
Design
Usability
CTEK 3300 - Excellent Charger

October 24, 2013

The CTEK 3300 is used on a collectible car to maintain the battery and it works great. I've also used it on motorcycles, lawn tractors with good success. It is very easy to understand and use. I would recommend it for similar use.

2 of 4 found this helpful

Was this review helpful to you?

Clive

Naples, Florida

Overall
Durability
Value
Features
Design
Usability
CTEK Multi US 3300 Carger

September 6, 2012

The best charger available. I have two of these and leave them connected to classic cars for months at a time so the batteries are always ready to go.

1 of 2 found this helpful

Was this review helpful to you?

Black05

Coatesville,Pa.

Overall
Durability
Value
Features
Design
Usability
I like it

December 27, 2011

Plugged it in. Works as advertised. Don't think about it much. It just hangs there doing its job.

2 of 4 found this helpful

Was this review helpful to you?

Rolly

North Aurora, IL

Overall
Durability
Value
Features
Design
Usability
Excellent product!

September 16, 2011

Big things come in small packages for sure with this product! It's compact yet works like a charm. Extremely easy to use! Kept the battery in my Corvette Z06 maintained all Winter long while the car was in storage. Car started without hesitation in the Spring.

2 of 4 found this helpful

Was this review helpful to you?

Items we think you might want
56-263 thumbnail
CTEK CIG PLUG (56-263)

• Quick Comfort Connect Cigarette Lighter Plug Adapter
• For Truly Trouble-Free & Convenient Charging
• Battery is Charged Through the Vehicle’s 12-Volt Socket
• Universal Model that Fits Both 12mm and 21mm Sockets

Your Price $9.99

Browse 1 question and 3 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
This charger quickly and fully charges my 800 amp AGM kinetik battery, its great!
Daniel H on Jan 25, 2015
Read the reviews and willing to give a try
Jose V on Aug 25, 2014
Son wanted it for his birthday
Ryan W on Sep 2, 2014

Product Summary

Manufacturer

Model Number

56-158

UPC

086429189069

Weight

1.80lbs

Internal SKU

cte-3300

Internal Product ID

29046

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: CTEK MULTI US 3300