The CTEK Model US 3300 has been discontinued

This is a listing for the new MXS 5.0 12 volt automatic battery charger
with cigarette lighter adapter

Best online price. Fastest delivery.

We are a CTEK distributor and the #1 CTEK "Web Authorized Dealer" .
Buy with total confidence and FULL 5 YEAR WARRANTY.
Includes these standard extras:
  • Upgraded cables and connectors, one set of alligator clips, hard wire cord set, and CTEK storage bag. Please see our detailed photos below.
BONUS: CIGARETTE LIGHTER/POWER PORT ADAPTER INCLUDED


Charges all conventional and deep cycle lead acid batteries including: 

Optima, Gel, AGM, Odyssey, Maxima, Stinger, Kinetik, etc.

Call us 9-5 m-f PST: 9497221084 or 8774356911


The CTEK model US 0.8, MXS 5.0 and US 7002 are for sale at our other listings.


Your vehicles cigarette lighter/power port must work with the key turned off for the charger to charge with the cigarette/power port adapter.

Instead of burying you with a ton of facts, here is all you need to know about CTEK:



Recommended for charging all lead-acid batteries including Optima Red top and Yellow top

CTEK has only 3% ripple, Optima requires 5% or less ripple

The other brand has 10% ripple. NOT COMPATIBLE!


You can leave this charger hooked up for months without damage.
When you need your toy or vehicle the battery is fully charged and ready to go. What is that worth?
Just let our feedback speak for itself:  "Best seller for Ctek - great communication - fast shipping", "HIGHLY RECOMMEND FAST SHIPPING DONT GET ANY BETTER THAN THIS SELLER", "A++++ SUPER GOOD DEAL THANKS", "Blue Ribbon! Fast shipping. Product as represented.", "Super fast transaction! AAA+++er", "Solid seller, good communication, fast ship! As good as it gets! A-OK++, Go for it", "A very positive purchase experience. Would recommend highly", "Bought Sunday, arrived Wednesday in perfect shape. That's great service. Thanks".

Check out Woody's Store.