CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power
(89 reviews)
Price: $177.49
In Stock
CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power
Item # CTEK56353
Retail:$199.95
Our Price: $177.49
You Save: $22.46
In Stock
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CTEK Power Inc Battery Charger - CTEK56353
- Car/Truck/SUV
- Motorcycle
- Trailer
- Lawn Mower
- Jet Ski
- 12V
- Battery Charger
- CTEK Power Inc
- Wall Outlet to Vehicle Battery
- Charges/Maintains
- 150 Ah
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:
- Reliable, maintenance-free, 8-step system constantly monitors and maintains 12V battery charge
- Won't overcharge or undercharge like common trickle chargers
- Switches automatically to pulse-maintenance phase when full charge has been reached
- Reduces risk of overheating, sulfation and premature battery failure
- Makes use of an internal power supply during battery changes to preserve your vehicle settings
- Restores the power capacity of stratified batteries w/ special Reconditioning Mode
- Easy-to-use, quick-disconnect system
- Includes 2 battery-cable attachment systems w/ Comfort Connect end plugs - charger plugs right in
- Eyelet-terminal cable permanently attaches to battery terminals
- Clamp-terminal cable temporarily clamps to battery terminals
- Includes 2 battery-cable attachment systems w/ Comfort Connect end plugs - charger plugs right in
- Safe, versatile design
- Approved for indoor and outdoor use
- Prevents reverse-polarity mistakes
- Convenient accessories (sold separately) provide additional security and convenience
- Know your battery's charge level at a glance w/ optional LED-indicator battery cable
- Reduce the hassle of charging multiple vehicles w/ additional battery-hookup cables
Specs:
- Application: most starter and deep-cycle, 12V, lead-acid batteries - including wet, MF, AGM and most gel batteries
- Charges batteries w/ capacities from 14 Ah - 150 Ah
- Maintains batteries w/ capacities up to 225 Ah
- Charge cycle: 8-step, fully automatic charger w/ pulse maintenance and Reconditioning Mode
- Dimensions: 8-1/2" long x 3-1/2" wide x 1-7/8" tall
- Includes:
- 12V Battery charger (w/ 5' battery-connection cable and 6' power cord attached)
- 1 Set of 16" battery cables w/ battery-terminal clips
- 1 Set of 16" battery cables w/ M10 (10.5-mm) eyelet terminals
- Owner's manual
- Protective case
- 5-Year warranty
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.
CTEK MULTI US 7002 Charging Process
Superior and safe, this eight-step process (plus Supply Mode) uses switch-mode, pulse-maintenance technology.
- Desulfation stage is the initial charging phase. This stage uses electronic pulses to desulfate batteries by converting lead sulfate crystals back to usable sulfuric acid.
- Soft-start stage tests the battery to see whether it can be charged. If the battery is unable to hold the initial charge, the unit goes into Error Mode, alerting you that your battery must be replaced.
- Bulk stage is the main charging phase. This stage accounts for 80 percent of the charging process and uses a constant charge level.
- Absorption stage completes the charge (to virtually 100 percent) using diminishing current to prevent battery damage.
- Analysis stage kicks in if the pre-set maximum time needed for absorption is exceeded. The unit measures the battery voltage and stops the charging process, automatically lighting an error indicator if the battery is faulty.
- Recond mode is used to recondition a battery that has been severely discharged. After the battery has been charged in Normal Mode and analysis has been completed, the charger reconditions the battery w/ a constant current of 1.5A and a maximum voltage of 15.7V for up to 4 hours.
- Float-maintenance stage maintains a constant voltage of 13.6V during the first 10 days.
- Pulse-maintenance stage begins after the 10 days of float maintenance. This long-term stage maintains the battery at the optimum charge level of 95 to 100 percent by recognizing any drop in voltage and sending a corresponding pulse of current to keep the battery properly charged. Pulse maintenance can be continued for months at a time.
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!
Protects the User
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.
Protects the Battery
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.
Protects the Vehicle and Its Electronics
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:
- Model: 56-353 (MULTI US 7002)
- Input voltage: 100 VAC - 120 VAC, 50 Hz - 60 Hz
- Output power is reduced at lower input voltage; a perfect charge will still be achieved
- Maximum current demand 2.0A rms (at full charging current)
- Charging current: 7A max
- Back current drain: less than 3 mAh per month
- Charging voltage: 15.7V
- Nominal charging voltage: 12V
- Ripple wave: less than 2 percent variance (max 150 mV rms, max 0.3A)
- Battery cable fuse: 15A
- Ambient temperature: -4 degrees F to +122 degrees F
- Automatic reduction of power at increased ambient temperature
- Cooling: natural convection
- Do not cover the charger
56-353 CTEK MULTI US 7002 12V 8-Step, Pulse-Maintenance, Universal, Lead-Acid Battery Charger
Installation Details
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Customer Reviews
CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power - CTEK56353
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.by: OttoPilot07/27/2023
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.
by: AHC07/23/2019
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.
by: Brad 05/17/2023
Easy to set up and get charging!
by: Jdp12/10/2019
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.
by: Scott02/28/2018
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
by: Richard 06/29/2023
Best charger technology for serious battery maintenance and long life!
by: BP Travel04/07/2015
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.
by: Boz VH05/09/2019
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.
by: Joseph01/20/2020
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.
by: Dennis corso -09/25/2018
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.
by: Todd06/07/2011
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.
by: Greg 03/29/2021
Works well & the display provides a good status of progress being made in charging. I used on my RV with 3 12V batteries
by: Linda 10/10/2019
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.
by: Gary E.09/11/2020
After destroying several batteries with other brands, I only use CTEK .
by: Robert12/05/2018
I have had great luck with Ctek chargers.
E-trailer is always a great vendor tobpurchase from.
by: Scott01/26/2018
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 !!!
by: Clayton B09/16/2020
Been using this charger for a year now, and it has worked like a charm. money well spent
by: MaryBeth09/10/2020
This little device has been a game changer.....easy to install, easy to use - recommend!
by: Rod T08/21/2020
Great charger at a great price. Delivery was as scheduled complimenting the great service.
by: Michael05/17/2022
Great charger...works perfectly
by: Michael 08/27/2021
Product is as advertised and customer service/delivery is great. I would recommend this company to anyone
by: Casian07/26/2018
Good product
by: Robert S.08/03/2019
Have not had the chance to use it but I like the advance technology. Better than the rest.
by: Tom12/26/2014
Excellent product but Made In China. r>
25
89
Show More Reviews
See what our Experts say about this CTEK Power Inc Battery Charger
- Will Towing Vehicle Provide Charge To Trailer Battery Through Trailer ConnectorThe battery on the trailer will not charge if it is attached to the 12V power wire from the towing vehicle. It will provide a small amount of current that helps maintain the current charge of the trailer battery. I recommend using a battery charger like the CTEK MULTI US 7002 12-Volt Universal Battery Charger, part # CTEK56353. This charger features pulse maintenance and will not overcharge the battery like many of the common chargers do.
view full answer... - Can a Trailer Battery be Charged with a 7-Way Trailer ConnectorThe 12 volt power circuit of your 7-way would not be able to charge a dead trailer battery, but it can put a light maintenance charge on it so that it stays topped off while you are travelling. The circuit is most likely protected by a 40 amp fuse, but that does not mean that it can provide 40 amps of charging power to your battery. That just means that if something tried to draw more than 40 amps the fuse would pop. For a charger that you could use to charge your battery when it is parked...
view full answer...
- Mounting Hole Dimensions and Locations for CTEK MULTI US 7002 12V Battery Charger The CTEK MULTI US 7002 12-Volt Universal Battery Charger # CTEK56353 features two mounting holes placed at opposite corners of the charger. The distance between the two holes on center is right at 7-1/2 inches and the holes themselves are pretty small, with just a 0.157 inch diameter. This is a really nice battery charger that features an 8-step system that constantly monitors and maintains the 12V battery charge. It is easy to use with its quick-disconnect system and the charger itself...
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- Long Term Battery Charger and Maintenance for a 2015 Mitsubishi Lancer Evolution XYou can keep certain battery chargers connected to a vehicle battery all the time such as CTEK charger # CTEK56353 which would be ideal for your 2015 Mitsubishi Lance Evolution. This charger is not a trickle charger (trickle chargers can overcharge a battery). This CTEK charger will maintain and recondition the battery and only charge it up again if it needs it. All while staying connected to the vehicle battery. For what you want to do this is the perfect charger. I have linked a video...
view full answer... - Can the Recondition Mode of a CTEK Battery Charger Used IndefinitelyWhen you select the recondition setting for the CTEK MULTI US 3300 12-Volt Universal Battery Charger # CTEK56353 it will stay in that setting for as long as needed and then it will move onto the regular charging phases of the charger. It sounds like your battery is still in pretty good shape so it wouldn't stay in the recondition setting very long. You cannot manually keep this charger in recondition mode.
view full answer... - Battery Charger Recommendation for Battery Banks that are In Series to Produce 12 VoltsSince your batteries are wired in series and have an output of 12 volts a standard 12 volt battery charger like the CTEK # CTEK56353 would work well. You'd attach the clamps of this charger to the battery outputs so that it applies 12 volts to the in-series 12 volt setup. I confirmed that this would work well with my contact at CTEK.
view full answer... - Can a 12 Volt Battery Charger Be Used To Charge 6 Volt Batteries In Series? Yes, you will be able to use a CTEK MULTI US 7002 12-Volt Universal Battery Charger # CTEK56353 to charge your 6 volt batteries. Since you have batteries wired in series and parallel giving you 12 volts of power you can use a 12 volt charger.
view full answer... - Is it Safe to Charge Battery That Gets Very Hot When Connected to ChargerIt is not good for a battery that is being charged to get very very hot. An increase in temperature is normal but extreme heat could indicate the battery is old enough that it cannot take a charge anymore, or that it is low on water (if it is a lead-acid type) or that the charger is simply pushing too much power into the battery. A very hot battery can pose safety hazards since it can contain explosive gases so do not continue to charge a battery that is very hot. The heat means that the...
view full answer... - Diagram for Connecting 12 Volt Charger to Two 6-Volt ChargersIf you check out the diagram I attached that shows how to attach a 12 volt battery to two 6 volt batteries wired in series you'll see how a charger would also attach. If you substitute the 12 volt battery in the diagram for your charger like the CTEK part # CTEK56353 that would be how to charge it.
view full answer...
- Recommended Battery Charger for Chevy Silverado and Ford EscapeFor your application I really like the CTEK MULTI US 12-Volt Universal Battery Charger # CTEK56353. This is an easy to use charger with 2 battery-cable attachment systems (eyelet and clamp-terminal) that will simply plug into a standard household AC outlet. The great thing about this particular charger is its multi-stage system. This includes the Desulfation, Bulk, and Absorption stages which all work towards charging the vehicle battery up to full power and the Pulse-maintenance stage...
view full answer... - Why Wouldn't Camper Trailer Interior Lighting Work When Not Connected to Campground Power SourceSounds like there are some wiring connections not made. To power your 120 volt style interior lights from a battery you will need to have the wiring ran from the battery to the inverter and then to the lighting. You'll have to go over the wiring of the lighting to see if it is also ran to a battery or inverter. The brake lights of the trailer are on a totally different circuit.
view full answer...
- Do Trailer Batteries and Car Batteries Have Different TerminalsAuxiliary batteries, which are often used for trailers, and automotive batteries are both 12 volt batteries but there are many different types of 12 volt batteries and they are different in a number of regards, including amp hour ratings. In regards to their connections, they will both have positive and negative terminals, though I would not be able to tell you with any type of certainty that your much older battery charger is capable of working with modern batteries. I very strongly recommend...
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- Battery Chargers to Maintain Battery on 2007 Arctic Cat ATV with WinchIf your Arctic Cat 350 ATV has a snow plow with powered winch lift and you are having trouble with having enough power to both operate the plow and start the ATV from the one battery I suggest you consider keeping the ATV on a maintenance charger like the CTEK MULTI US 7002 12-Volt Universal Battery Charger with Pulse Maintenance # CTEK56353. This AC-powered charger will keep your ATV battery topped off but won't undercharge or overcharge since it automatically switches to pulse-maintenance...
view full answer... - Troubleshooting Inside Lights and Fridge Not Operating on Horse TrailerThere are a few possibilities as to what is going on and it all depends on what kind of setup you have on your horse trailer. The first question is what is powering all of the lights and your fridge? If it is a battery or generator is that unit still supplying power elsewhere? If it is then you will want to inspect the wiring from your power source to your lights and fridge. If not then the battery or generator either needs to be recharged or needs more fuel. It's also possible that all...
view full answer... - Can CTEK Battery Charger # CTEK56353 Maintain RV Batteries for 6 Months While in StorageYes, you can use CTEK battery charger # CTEK56353 to provide long-term maintenance of the RV batteries. This charger will not over charge the batteries and it will recondition them so they will be like new when you get the RV out of storage!
view full answer... - Battery Charger for Four 12-Volt Batteries in ParallelYes, when wiring 12 volt batteries in parallel you will connect the positive posts to one another and the negative posts, with the negative terminal on the last battery being grounded, as you see in the accompanying photo. Keep in mind you definitely will want a battery charger for your four batteries to maximize their usage, the CTEK MULTI US 7002 12-Volt Universal Battery Charger with Pulse Maintenance and Backup Power # CTEK56353 I have added a link below to a video review of this...
view full answer...
- Battery Maintainer Recommendation for Breakaway Battery for TrailerMaintaining the battery with the charger part # CTEK56353 would be a great option to allow you to not have to keep replacing batteries. This will keep the battery topped off and in good shape.
view full answer... - Can RV Battery be Left Connected When Connected to RV PowerYes you can keep your 12 volt batteries connected when you connect the trailer to a shore power connection. The battery though would not charge from this connection.
view full answer... - Powering Fans in a Horse Trailer Without Leaving Trailer Connected to the TruckTo power the fans on your horse trailer when the trailer is disconnected from your truck, you will need to add a battery to the trailer. I recommend using a battery box and mounting the battery on the frame of the trailer so you can easily ground the battery to the frame. Once you have the battery installed, you will want to run the wire for the 12 volt circuit on the trailer side connector to the positive battery terminal. Next, connect the power wires from the fans to the battery. I...
view full answer... - Troubleshooting Husky Brute Electric Jack That Will Not Raise But Will Lower Under PowerIf an electric trailer jack will lower under power but not raise up under power then the cause could be related to the power supply feeding the jack, or it could indicate that the jack is overloaded or damaged. A power jack can deliver its rated lifting capacity only when it has sufficient power input from (usually) the dedicated trailer-mounted battery. The 12V power feed on a vehicle 7-way may not be able to deliver the current required by the jack motor. It takes much more power for...
view full answer... - Charging Two 6 Volt Batteries and One 12 Volt Battery with a CTEK Battery ChargerIf your 6 volt batteries are connected to the single 12 volt battery the same way that they are attached to each other then you essentially have a 24 volt system. You would need to separate the two 12 volt systems and then charge them independently of each other (one at a time). Charging each battery one at a time will actually take the least amount of time. If your charger can do both 6 volt and 12 volt batteries make sure you have it set to the proper mode. If your system ultimately...
view full answer... - Will CTEK Battery Charger Analyze Battery Its Connected to Without Being Plugged inYou'd want to have the quick disconnect clip disconnected between the charger and the terminals on the charger if it's not in use. The CTEK chargers aren't designed to be left totally installed on a battery without being plugged in. Essentially the charger is analyzing the battery and while not drawing a considerable amount from the battery it is draining it very slightly. Instead of leaving the whole thing installed instead just leave the terminal connectors installed and remove the charger...
view full answer... - CTEK Battery Charger for Re-Charging Two 12V Trailer BatteriesWhile you can wire two batteries' outputs in parallel when you're using them, when charging batteries it is always best to do each one individually. Shore-power chargers like the CTEK # CTEK56353 are the only way to fully re-charge a depleted battery. The +12V power circuit in your 7-way trailer wiring can deliver a worthwhile maintenance-level charge to the fully-charged batteries on your trailer to keep them topped off but that circuit simply doesn't have the current required to re-charge...
view full answer... - Maximum Power Consumption for CTEK MULTI US 7002 12-Volt Universal Battery Charger CTEK56353The CTEK MULTI US 7002 12-Volt Universal Battery Charger # CTEK56353 will draw a maximum power input of 2-amps during charging according to my contact there. I own one of these CTEK chargers and for several years it has worked reliably to maintain my lawn mower and motorcycle batteries. The CTEK's output is sufficient to charge batteries from 14 to 150 Amp Hours (Ah) and it can maintain batteries up to a 225 Ah rating. Typical charging times are shown on the linked image.
view full answer...
Do you have a question about this Battery Charger?
Info for this part was:
Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Michael H
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Jameson C
Expert Research:
John H
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Adam R
Expert Research:
Jeffrey L
Video Edited:
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Updated by:
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Updated by:
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Mike N.
4/3/2016
Still works great, no issues.