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TT TOPDON

Trickle Charger Car Battery Charger Automotive, TOPDON T4000 4A/1A for 6V/12V for Lead-Acid/Lithium ion Batteries, Auto Smart Battery Maintainer Desulfator with Temperature Compensation,AGM,Deep Cycle

    • Based on 645 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, May 18
Order within 9 hours and 32 minutes
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Features

  • 6V/12V Car Battery Charger: Our TOPDON TORNADO 4A battery charger maintainer is compatible with all 6V and 12V lead-acid batteries, (flooded, AGM, gel, deep cycle batteries)and 12V lithium batteries. This charger can be used for cars, trucks, SUVs, PWCs, motorcycles, scooters, ATVs, lawnmowers, RVs, boats, and other devices in your home. With maximum 4A current, it supports battery capacity range: 10-150Ah. no overcharge, automatic protections.
  • All-in-One Charger: TOPDON Smart Car Battery Charger maintainer is not only a battery charger, but also an advanced battery maintainer, trickle charger, and battery desulfator! This battery charger can automatically detect battery sulfation and acid stratification and use pulse repair function restore lost battery performance for stronger engine starts and extended battery life.
  • Smart 9-Step Smart Charing: Revolutionary 9 charging steps for faster speed and better maintenance than other standard chargers. Other car battery charger is to increase the current to make the battery fully charged more quickly, but this will also cause damage to the battery.The 10-step charging technology of this battery desulfator charger has been improved, and the battery repair function has been strengthened. Help repair and maintain the battery, extend its life, with zero overcharges.
  • Safe Above Everything: Premium copper clamps are built with user safety in mind through spark-free operation and reverse polarity protection. TOPDON battery charger built in circuit protection guards against reverse polarity, sparks, overcharging, over-current, open-circuits, short-circuits and overheating. Avoid any dangerous situation.IP65-rated ABS shell housing seal the internals from dust, dirt, water; 6ft power cable / 8ft battery cables allow the extended reach.
  • Easy to Use: TOPDON TORNADO4000 trickle charger adopts a sturdy,light and compact design, the weigh only 1.20 lb, it's easy for you to carry and use anywhere. Is your head spinning about how to use the car battery charger ? No worries, the Topdon TORNADO4000 is the savior! Detailed instructions will guide you easy to use TORNADO4000 trickle charger, even grandma can easy to use it without barriers.
  • Works In Extreme Climate: The TOPDON TORNADO battery charger automatically detects the outside temperature, and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.can charge your car in an extreme temperature environment: 14F - 107F (-10C - 40C).Simply connect and let this advanced car battery charger automatically monitor, charge and maintain your battery.
  • Hassle-Free Warranty: TOPDON T4000 car battery charger, Smart Battery Clamps, Eyelets, User Manual. TOPDON would like to provide with hassle-free warranty plan: 3 years quality assurance, 30-day free refund, and lifetime free technical support. We also offer you an extended warranty planTopdon Care+, which includes 12 months free replacement, lifetime hotline technical support. TOPDON offers customer support on "Facebook" during weekdays. Search TOPDON Official and contact us via message.

Brand: TT TOPDON


Color: Black-4.0Amp Car Battery Charger


Product Dimensions: 2.92"D x 8.09"W x 1.83"H


Item Weight: 1.2 Pounds


Output Voltage: 12 Volts


Manufacturer: ‎TT TOPDON


Brand: ‎TT TOPDON


Model: ‎TORNADO4000 4.0Amp Car Battery Charger


Item Weight: ‎1.2 pounds


Product Dimensions: ‎2.92 x 8.09 x 1.83 inches


Item model number: ‎T4000


Manufacturer Part Number: ‎TORNADO4000 4.0Amp Car Battery Charger


Date First Available: June 25, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Worked on car, garden tractor, LiFePO4 battery.
It is very simple to use, and worked well on everything I used it on. Those included a car battery removed from a car (I didn't have a battery in any of our cars which needed charging or reconditions) which was half dead, having been removed from a car a couple of years earlier. I didn't do the amount of experimenting to figure out whether it improved the battery, but it did charge it properly, and it did seem to go through its desulfation cycle just fine. Last fall, I had a garden tractor which hadn't been used since the relative it came from died a couple of years ago, maybe well before that, not sure. The battery was drained to a point where I'm surprised this figured out it was a 12V battery. It charged it up well enough to use the tractor to mulch and blow all the lawn leaves into the woods. Again, not sure if the desulfation cycle did anything constructive, but it probably did, because I thought the battery would need a jump even after charging and desulfating a couple of times, and it didn't. Last but not least, I used it to charge a half-charged LiFePO4 50Ah battery I bought to use like a larger power station than I already had. I'm not sure whether I clicked the mode button to get it to Lithium, or it self detected, but either way in a couple of seconds the Lithium mode light was on and it did apply the correct charging voltage at each stage of charging. It is bigger/heavier than my very old Sears 3A computerized automatic charger, but it's still compact and light for a battery charger, sort of like an oversized laptop power supply brick. The plug, cables, clips and everything are of perfectly fine quality, more than sufficient for a 4A battery charger. Happy with the purchase. I'd been tempted to get the 8A version, but wanted the versatility to charge smaller batteries at 4A without having to drop down to just trickle charging. This also means you can run it off a pretty small power station (like my 300Wh one, or smaller), if you are on the road without access to an outlet. Campers and RVers should have a charger like this, to be able to charge the vehicle battery off the house batteries/inverter, even if their system for doing that goes bad. Likewise, a little inverter, even powered by the cigarette lighter 12V outlet can turn this into a poor man's DC-DC charger to manually charge the house batteries while the vehicle is on. A bigger charger might blow the 10A fuse on those, especially if you're running a laptop off the same 12V outlet. This gives you a better shot, but don't forget to carry spare 10A fuses anytime you rely upon the lighter 12V outlet. ... show more
Reviewed in the United States on February 21, 2023 by NikonF7
    • Tornado 4000
Worked fine for about a year. Only comes on, but doesn't try to charge Edit: upping stars to 4 from 2. Topdon responded to my review, gave me a refund and is sending a new unit. They follow up well on issues with their product. I will immediately start using it and will give an update after a she to see if it performs better than the last. ... show more
Reviewed in the United States on July 25, 2023 by Dsgnce
    • Things to Know Before you Buy This
The product is a great charger but it does not fix the problem with the battery. I still had to buy a new battery.
Reviewed in the United States on September 6, 2023 by Reggie
    • Voila !
Used it on 3 different batteries - works like a champ.
Reviewed in the United States on September 5, 2023 by CLAW
    • Does what it is supposed to!
Are use this as a maintainer so the batteries on my boats, side-by-side’s, and other things that have batteries survive the winter. It works very well and I know that I’m gonna have a charged battery when I need it.
Reviewed in the United States on August 10, 2023 by James D. Copper
    • Garbage
This item is trash. It wouldn't charge my boat battery I had disconnected for the winter. It wouldn't maintain a charge on my motorcycle battery. The only reason this is getting a one star is because you can't leave anything less. Napa sells one for the same price that actually works. A huge thumbs down. I would not recommend. ... show more
Reviewed in the United States on April 13, 2023 by Johnathon
    • Great charger and battery repair device!!
I rarely do reviews, but the Topdon Tornado and BT 110 are a great little battery charger and charging analyzer in my humble opinion. I have a 2019 Duracell 12 volt battery in my riding mower. Two weeks before I bought the BT 100 I had charged the battery with the Topdon Tornado 4000 but it still seemed to crank the mower rather sluggishly. I tested the battery with the BT 100 and it told me that the battery was only 50% charged and 45% healthy. I used the repair fuction on the Tornado 4000 and after 5 hrs. it reported fully charged and repaired. I attached the BT 100 and it reported 100% charged and 100% healthy. I checked the charging and cranking with it and it reported good on both. I used the mower for an hour a couple of days later and it reported 100% healthy and charged on the battery. Using both of the Topdons saved me from having to buy a new battery and I'm convinced they both do what they claim. I'll be checking both of my mower batteries and car batteries regularly now to make sure they are in top notch condition. ... show more
Reviewed in the United States on January 4, 2023 by John R Hyde
    • It’s a well built charger
It’s a nice looking unit but I wonder about the longevity of the one and only button you push to do everything the charger is capable of. It is like all smart chargers, if it can’t read voltage it won’t charge the battery. It will charge a weak battery. I’m still unsure about the repair feature, I’ll have to test more batteries. I’m actually going to start looking for “dumb chargers” aka old school chargers at local flea markets. ... show more
Reviewed in the United States on February 23, 2023 by Average Joe2020

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