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This powerful, all-weather eight-step charger uses a patented, pulse-maintenance system to charge, maintain and help recondition 12V batteries. Backup power supply allows you to change vehicle batteries without losing complicated program settings.
Features:
Specs:
This CTEK charger comes w/ two battery cables: one w/ clamp terminals and one w/ eyelet terminals. The 16" eyelet-terminal cable can be left attached to the battery, and the clamp-terminal cable is great for temporary connections.
Whenever you want to charge the battery, just plug CTEK's patented Comfort Connect attachment terminal into the receiving end on either of the provided battery cables.
Superior and safe, this eight-step process (plus Supply Mode) uses switch-mode, pulse-maintenance technology.
Supply mode - available only on this CTEK model - provides backup power to your vehicle while the battery is being changed. No more tiresome system resetting after battery changes.
A goof-proof design distinguishes CTEK's new-generation chargers from the competition - you don't have to be a mechanical guru to keep your battery working at top efficiency. CTEK's patented charging system monitors your battery, providing exactly the charge it needs during each unique charging stage!
Your personal safety is paramount, and CTEK's spark-free, short-circuit-proof design incorporates a feature that prevents reverse polarity, keeping you safe. You simply cannot make a polarity mistake: The charger will not operate if it is attached incorrectly. In addition, the red alarm light on the charger alerts you if there is a reverse-polarity problem.
CTEK's patented, switch-mode, pulse-maintenance charging system is scientifically engineered to safely charge your battery by employing the most up-to-date technology. Using carefully monitored, low-grid voltage, CTEK's patented process differs from competitors' chargers in its ability to provide the precise final voltage that your battery needs to maintain optimum charge level. This sophisticated, interactive device will never overcharge or undercharge your battery. You may leave it attached to the battery for months, making it perfect for seasonal vehicle storage.
Won't cause overcharging or overheating. These together can cause gassing and excessive acid concentration that shortens the life of the battery by corroding the lead plates. When overcharged, the battery cells become dried out. Electrolytes "boil dry," generating excessive heat that can cause a fire.
Won't cause undercharging or sulfation. Undercharging can be just as damaging to your battery as overcharging because chronic undercharging leads to sulfation. Sulfation occurs when the lead and lead dioxide of the battery's plates react w/ sulfuric battery acid to produce lead sulfate. This in turn is converted back to lead, lead oxide and sulfuric acid. A small, unavoidable amount of sulfation and gassing naturally takes place as a result of the chemical processes occurring in lead-acid batteries. However, extensive undercharging causes extra lead sulfate to accumulate on the lead plates of the battery. Because the crystalline form of the sulfate cannot hold an electrical charge, excessive sulfation greatly diminishes the charging ability of the battery, eventually rendering it unusable.
Provides desulfation w/ a patented process. Desulfation is the reversal of sulfation damage. The CTEK charger's unique process not only prevents the undercharging that produces excess sulfation, it also includes a desulfating step that can often "revive" a lightly sulfated battery. It accomplishes this w/ carefully monitored electronic pulses of energy that help to break down the lead sulfate crystals, allowing the battery to accept charge once again.
Ensures consistent charging w/ low ripple-wave percentage rate. Ripple-wave percentage is the quantity of disturbances exhibited in current and voltage. Even minor variations in household current can cause undercharging or overcharging, but CTEK's low-ripple design regulates the incoming current before passing it on to your battery. This process can cause the charger to be a little slower than linear chargers but results in a healthier, more productive, longer-lasting battery.
The charger is also safe for your vehicle. Its sophisticated circuitry is designed to be compatible w/ today's sensitive electronics and audio equipment. You can confidently charge your battery while it is still in the vehicle: no more hefting heavy batteries! CTEK's low ripple rate eliminates the danger of damaging electronic devices connected to the battery, and it prolongs the battery's service life. If you must replace your battery, the Supply Mode provides backup power to your vehicle's systems when you remove or replace the battery, sparing you the hassle of resetting your controls.
Indicator lights on the face of the charger light up to show the current charging stage.
Additional Specs:
Average Customer Rating: 4.9 out of 5 stars (89 Customer Reviews)
This powerful, all-weather eight-step charger uses a patented, pulse-maintenance system to charge, maintain and help recondition 12V batteries. Backup power supply allows you to change vehicle batteries without losing complicated program settings.etrailer's price was on the market and delivery was quick.
The 7002 is easy to use and powerful enough to use with large capacity AGMs while having enough controls to be suitable for standard, wet batteries.
I installed the included ring terminals on the battery, so I can simply click to connect whenever I'll not be using my car for a while or if the battery gets low for any reason.
This charger is a good investment in lengthening battery life.
This charger has worked flawlessly on a set of 4 golf cart batteries paired in series for a 12 volt system used on my RV. It is easy to operate and durable. Instructions are easy to understand. The easy clip exchange between battery clips vs. screw down rings makes it easy to switch over to other batteries, such as for my boat, for a quick charge.
Easy to set up and get charging!
Without a doubt the best charger I have ever owned. I use this charger on all three of my vehicles. Plus my motorcycle and garden tractor.
Note:
Just wish there was an accessory that allowed me to charge both batteries on my diesel truck at the same time.
We have used the C-Tek chargers for many years for vehicle prototype development, and it is the only brand and model that we use.
Our normal supplier did not have this item in stock.
I searched online for someone who could supply our needs as we were behind on a project.
Etrailer had this item in stock. They offered great customer service and fast shipping. We ordered 4 chargers.
We will start using Etrailer.com in the future for the C-Tek and other items.
Scott
2/28/2019
Great
Best charger technology for serious battery maintenance and long life!
Excellent product does as advertised. I read a comment from one of the eTrailer experts that this battery charger can provide 12VDC as a power supply. Hooked it up and it does exactly what I need - providing shore power a few lights and fans in my cargo (motorcycle) trailer.
Great chargers. Seems like the plastic used in the proprietary connectors could be better quality. Otherwise doing a great job keeping batteries in good shape.
I purchased this same unit about 10 years ago and have had good experience with it. It is still in good working order so when I developed the need for an additional unit I opted for the same mfg.
My only concern is ordering from an authorized distributor in order to maintain the mfg warranty.
Ordering from etrailer web site was a little confusing at the point of placing the order and I wasn’t sure if the order was actually submitted until I received a confirmation later that day.
Delivery time was out the door same day. I would order from this distributor again in the future.
I purchased a C Tek battery charger and it is much more advanced than the
Battery Tenders that I have used for years. While the Battery Tenders do a
good job of keeping a battery up, the C Tek can in some cases restore a battery
that is sulphated. I like it as it is also a power supply if you want to change
your battery and not loose the settings in your car.
This is my second purchase for etrailer. The service has been excellent each time, and the quality of the products is also excellent.
The CTEK battery charger is easy to use. I have used it on Optima batteries, which don't charge as well on conventional chargers. It works great. Just hook it up, and it stops when it is finished.
Works well & the display provides a good status of progress being made in charging. I used on my RV with 3 12V batteries
Like that it has connections to charge various types of batteries. First use was a camper battery and it charged quickly. etrailer has always provided good service also.
After destroying several batteries with other brands, I only use CTEK .
I have had great luck with Ctek chargers.
E-trailer is always a great vendor tobpurchase from.
Excellent product - replaced a CTEK 3300. I will likely replace 3 more CTEK 3300 with the CTEK 7002. Great service by Shaun on the phone who enabled shipping overnight when I really needed it. Very courteous and professional. Thank You !!!
Been using this charger for a year now, and it has worked like a charm. money well spent
This little device has been a game changer.....easy to install, easy to use - recommend!
Great charger at a great price. Delivery was as scheduled complimenting the great service.
Great charger...works perfectly
Product is as advertised and customer service/delivery is great. I would recommend this company to anyone
Good product
Excellent product but Made In China. r>
Works well
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Mike N.
4/3/2016
Still works great, no issues.