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TowerTop 3/15/25 Amp Car Battery Charger, 12V Fully Automatic Smart Battery Maintainer with Engine Start, Auto Desulfator, Battery Repair, for All Lead-Acid and LiFePO4 Batteries

  • Based on 5,970 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Jul 22
Order within 3 hours and 35 minutes
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Color: 25A Pro


Features

  • Quick Charger: Up to 25A quick charger, 4-Level adjustable current 3A/15A/25A/AUTO can meet your different needs. This 12V smart car battery charger, with 85% high efficiency (industry average: 75%), ideal for STD, AGM, Gel, Wet, MF, EFB, Calcium, Deep Cycle, LiFePO4 batteries
  • Fully-automatic Charging: Auto-identify and charging, auto-stop at 100% charging, auto-start in 30 seconds while you forget to press start, auto-restart to trickle maintain when the battery voltage drops. This battery charger can remember your previous settings, with no worry about AC power failure when connecting for a long time
  • 8-Stage Charging Program: Intelligent 8-Stage Charging include: Desulfation, Soft Start, Bulk Charge, Absorption, Analysis, Recondition, Float, and Pulse Maintenance. MCU controller monitor the whole charging progress, add charging precision, optimize battery power, and extend battery life
  • Engine Start and Winter Mode: Engine start delivers 100A current helps activating your car battery to start your vehicle in 100 seconds. Winter Mode, +0.2v on the basis of the original charging voltage, better boosts your battery activity and charges more thoroughly in low-temperature situations
  • Battery Repair: Advanced Recondition mode uses slow pulse reconditioner technology to detect battery sulfation and acid stratification to restore lost battery performance, help to repair old/idle batteries and extend battery life. If your battery cannot be charged, you can try "Recondition" mode to repair your battery, pls note: It can not repair a totally dead battery
  • Multi Safety Protection & ETL Certification: This battery charger offer multi protection against Spark,Reverse Polarity,Over Charge/Discharge,Over Voltage,Over Current,Overload,Overheat,Current Backflow,Short Circuit. Reliable cooling systems improve working performance. ETL certification makes it safe to use

Brand: TowerTop


Color: 25A Pro


Product Dimensions: 5.83"D x 8.58"W x 6.1"H


Item Weight: 5 Pounds


Output Voltage: 12 Volts


Manufacturer: ‎TowerTop


Brand: ‎TowerTop


Item Weight: ‎4.96 pounds


Product Dimensions: ‎5.83 x 8.58 x 6.1 inches


Item model number: ‎BC-025-US13


Manufacturer Part Number: ‎BC-025-US13


Amperage: ‎100 Amps


Voltage: ‎12 Volts


Date First Available: October 31, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jul 22

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

Learn more about financing & leasing here.

Top Amazon Reviews


  • From Dead to Ready overnight
Color: 25A
This battery charger saved me from having to buy another battery for my Jaguar. This charger is so easy to use. I placed the clips on the battery terminals and then plugged in the charger. It immediately read the battery and told me the wattage of the battery. The numbers are bright and easy to read and the cord length is long enough where you don’t have a problem with connection. Since I already knew the battery was dead I just took the battery out of the car and brought it in the house to charge over night. Since it was an AMG battery I set the charger to that and then checked my other settings and it started charging. The best part about this charger is that when the battery was fully charged it turned off. I didn’t have to worry about any problems with my car battery. It functioned just as it should all night. The next day I got up and it had turned itself off. I disconnected the battery and then place it back into my Jaguar and it started right up. This battery was registering 1.7V when I plugged it up and this charger had me ready to go the next morning. It saved me from having to take the battery and leaving it at the shop for them to charge overnight and then have to go and pick it up. Now I can do it myself. I have more than one car so sometimes my car sits up for a while and the battery drains from my insurance snap shots.Now problem solved and I am one happy camper. ... show more
Reviewed in the United States on May 30, 2025 by Ombre glitter Ombre glitter

  • I Love This Battery Charger! It Like A Personal Battery Mechanic.
Color: 25A
This is the best purchase I've made in years. Thank you to the manufacturer. Great low price. So simple my wife can hook it up, and she admittedly knows nothing about charging a battery. Here's why a snagged this. My wife left the door ajar in her SUV and ran the battery down to nothing. I jumped it with my car but figured her battery needed some TLC. Hers is a 2023, mine is a 2017. So mine was closer to death than hers. The charger came overnight. I connected the red cable and the black cable to her battery... directly to the battery and plugged it in. I didn't disconnect anything, it was still in the vehicle. The charger display lit up. Wow! I didn't even hit Start yet. And it started diagnosing the battery on its own. Magic! I was shocked. It went through all 8 stages and desulfationed and then deep charged it. It took about 5 hours. It sat on 99% for quiet awhile, then 100% and shut itself off. Voila! I took the cables off and moved it to my 2017 battery. Same thing happened, it just went to work. I left it overnight and in the morning, 100%. I'm telling you, whoever designed this was at genius level. There were no side effects with electronics, loss of radio stations, or anything. I'm impressed. I would buy this again in a heartbeat. It makes you want to tell all of your friends and put it on their batteries just so they can experience the magic too. And it's pretty compact compared to the old battery chargers. Get one! Highly recommended! ... show more
Reviewed in the United States on May 10, 2025 by Clifton R Johnson

  • Saved me, it works great!!
Color: 25A
II am lucky enough to own a 71 Monte Carlo with 23,000 actual thousand miles and only drive it to auto shows and competitions. Since I stored on a car lift and occasionally crank it up, I tend to go through batteries in a couple years because it does not get enough use to keep it charged, even with a trickle charger. I purchased this unit when I brought the car down to crank a few weeks ago, and the battery attempted it one time and failed. I needed an intelligent charger to try to renovate this battery before I go to the battery store again and buy another one. To my amazement this unit did the job with ease! I could smell the sulfuric acid as it was pulsing and restoring the cells, and then it charge the battery completely as I left it overnight. When I checked on it the next morning, the car fired up as if it had been driven on a regular basis! I'm totally happy with this units and recommended for anyone that has occasional need for good charger. My only hope that it is built to last, which remains to be seen. But in any event, it is certainly cheaper than replacing a battery, and it's worth investing, in my opinion. I hope this helps you… ... show more
Reviewed in the United States on May 12, 2025 by Docmedia

  • 100 amp car start mode may not be true
Color: 25A
Very lightweight small profile. Has a readout to show how many amps are being pulled and used on charging. It’s “100 amp car start” does NOT have the same power as my beat up 20 year old Schumacher charger with its 50amp start. I do like the fact it has different battery type modes, and the smart features. It sure does click A LOT in different modes, and I hope relays or whatever used inside do not wear out or short. It’s a $100 charger. It needs to last ... show more
Reviewed in the United States on February 23, 2025 by jeffrey lay

  • update - they reached out after 1 star review....cant get in touch with seller for warranty
Color: 25A
UPDATE - after posting the 1 star review they reached out to me and had me send a video of the defective unit. once they reviewed it, they sent a new unit. i bought 3 compeletely different units from this manufacturer initially and the other two are still working fine. hopefully, i just got a bad one and this replacement will be just fine. seemed good at first but at about 2 months it started shutting on and off randomly. now at 4 months it wont come on at all. i am ok with a product being defective - it happens. the problem is i have been trying to get in touch with the manufacturer to take advantage of the 18 month warranty....no such luck. reach out every way i can find and they have not responded. so not only did the product fail, so far so has contacting the seller for a replacement. might change the review it they contact me and make it right. ... show more
Reviewed in the United States on May 20, 2025 by Amazon Customer

  • I like it
Color: 25A
This is a good little charger. I like the way the smart charge works. Basically connect it, hit start, and walk away. It starts out at higher amps and slowly reduces the amps to fully charge the battery. I haven't tried the reconditioning function yet, but I do like the way the 8 stage standard sequence works. I like to take care of my tools, and didn't want to keep this in the cardboard box it came in. I did some looking around and found that the Worx WA1551 MAKERX Carry Bag was a nearly perfect fit, so I snapped one up. Pairs very well with this charger and even has a little padding for protection. Should keep this little charger happy and looking good for a long while. ... show more
Reviewed in the United States on May 25, 2025 by ZBeard

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