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NOCO

NOCO GENIUSPRO25: 25A 6V/12V/24V Professional Smart Battery Charger – Maintainer, Desulfator & Power Supply with Overcharge Protection & Thermal Compensation – for Lead-Acid & Lithium Batteries

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Mar 12
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Features

  • MEET THE GENIUSPRO25 A more powerful evolution of the G15000, delivering next-level performance and charging speed. Built for professionals, it redefines whats possible in a world-class smart battery charger.
  • DO MORE WITH GENIUS A multi-voltage charger - 6V (25A), 12V (25A), and 24V (12.5A) - for lead-acid (AGM, Gel, SLA, VRLA) and lithium (LiFePO4) batteries, including AGM, maintenance-free, deep-cycle, and marine batteries.
  • ENGINEERED FOR PROS Designed for professionals who demand peak performance, with ultra-flexible silicone cables rated to -40oC and tough nylon-braided shielding for maximum durability and abrasion resistance.
  • PROGRESSIVE POWER SUPPLY A dual-voltage power supply - 12V (25A) and 24V (12.5A) - provides clean, consistent power with no ripple, noise, or voltage spikes during ECU flashing, reprogramming, and diagnostic testing.
  • ENJOY PRECISION CHARGING An integrated thermal sensor dynamically adjusts the charge based on ambient temperature, preventing overcharging in hot weather and undercharging in cold, ensuring optimal battery performance.
  • CHARGE DEAD BATTERIES Charge batteries from as low as 1 volt, or use Force Mode to manually charge completely dead batteries down to zero volts. Perfect for recovering deeply discharged or neglected batteries.
  • RESTORE YOUR BATTERY Precision pulse charging reverses sulfation and acid stratification to improve performance and extend battery life. Advanced repair modes support 6V, 12V, and 24V batteries for deeper restoration.
  • WHAT'S IN THE BOX Includes a 25A charger, (4) 6-foot AC cables, 5-foot DC cable with clamps and integrated eyelets, 10-foot extension cable, EVA case, and a 3-year warranty. Proudly designed in the USA.

Description

The GENIUSPRO25 sets a new benchmark for professional-grade battery chargers, delivering unmatched power, performance, and versatility as a more advanced evolution of the G15000. Designed for professionals, it’s a multi-voltage charger capable of 6V (25A), 12V (25A), and 24V (12.5A) charging for lead-acid (AGM, gel, SLA, VRLA) and lithium-ion (LiFePO4) batteries, including flooded, maintenance-free, deep-cycle, and marine batteries. It is compatible with a vast array of vehicles, such as cars, motorcycles, dirt bikes, scooters, mopeds, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, jet skis, snowmobiles, golf carts, classic cars, and more. Automotive brands include BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, Audi, Ford, Chevrolet, Corvette, Cadillac, Prius, Toyota, Subaru, and Nissan, as well as powersport brands like Harley-Davidson, Honda, Yamaha, Kawasaki, Ducati, Indian, KTM, Husqvarna, Vespa, Polaris, and Seadoo, along with lawn and garden vehicles such as John Deere, Kubota, and Toro. Built for demanding applications, it features ultra-flexible silicone cabling rated to -40ºC and protective nylon-braided shielding for superior durability. The GENIUSPRO25 also functions as a dual-voltage power supply—12V (25A) and 24V (12.5A)—delivering ripple-free power for ECU flashing, reprogramming, and diagnostic testing. With an integrated thermal sensor, it prevents overcharging in hot climates and undercharging in cold ones, while precision pulse charging restores battery health by reversing sulfation and acid stratification, improving performance and longevity. It can charge batteries as low as 1 volt or use Force Mode to manually charge completely dead batteries down to zero volts. Advanced repair modes for 6V, 12V, and 24V batteries ensure deeper restoration and reliability. The package includes a 25A professional charger, four 6-foot AC cables (US, UK, EU, and AU), a 5-foot DC cable with clamps and integrated eyelets, a 10-foot extension cable, a durable EVA case, and a three-year warranty. Proudly designed in the USA, the GENIUSPRO25 offers ultimate performance, reliability, and versatility for the professional on the go.

Brand: NOCO


Color: Black


Product Dimensions: 10.3"D x 15.8"W x 8.9"H


Item Weight: 8 Pounds


Output Voltage: 12 Volts


Manufacturer: ‎NOCO


Brand: ‎NOCO


Model: ‎GENIUSPRO25


Item Weight: ‎7.98 pounds


Product Dimensions: ‎14.65 x 8.74 x 6.74 inches


Item model number: ‎GENIUSPRO25


Exterior: ‎Brushed


Manufacturer Part Number: ‎GENIUSPRO25


Special Features: ‎6V, 12V, and 24V Professional Battery Charger For Cars, Automotive, Boats, Marine, Deep-Cycle, and More, Battery Maintainer, Trickle Charger, Power Supply, and Battery Desulfator, Force Mode For Manual Battery Charging, IP44 Ingress Protection, Spark-Proof and Reverse Polarity Protection, Temperature Compensation For Accurate Recharging


Amperage: ‎25 Amps


Date First Available: December 8, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 12

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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Top Amazon Reviews

    • Compact, powerful, and pro-grade charger for serious use
The NOCO Genius PRO 25 is an impressive all-in-one battery charger, maintainer, and desulfator. It hits a sweet spot for the at-home mechanic or anyone who works on vehicles regularly. It offers 25 amps of charging power, which is more than enough to recharge or maintain standard 12V batteries quickly and safely. While still compact, it’s built with professional-level durability and performance in mind. I’ve used it to bring deeply discharged batteries back to life, and the repair mode worked well on a few that wouldn’t take a charge from cheaper units. It also functions as a smart battery maintainer, so you can leave it connected without worrying about overcharging. Yes, it’s a bit pricey, but that’s expected for a unit with this level of control, precision, and build quality. It may be overkill for someone just looking to boost their battery once in a while, but if you’re serious about taking care of your vehicle’s electrical system, this is a tool you’ll keep for years. Q&A: Q: Is the Genius PRO 25 suitable for everyday car owners or just pros? A: It’s great for serious DIYers and pros. Casual users may find it more than they need, but it’s easy to use and very effective. Q: Can this charger bring a dead battery back to life? A: Yes, it includes battery repair/desulfation modes and can restore deeply discharged or sulfated batteries that cheaper chargers can’t handle. Q: Does it work for AGM, lithium, and deep-cycle batteries? A: Absolutely. It supports AGM, flooded, gel, and lithium (LiFePO4) batteries, making it extremely versatile ... show more
Reviewed in the United States on July 16, 2025 by Putty 802
    • Definitely a Professional Charger. Top Notch
This is a beast of a charger, and definitely deserves the “Pro” in its name. All Noco chargers are of high-quality. However, this unit has extremely nice armored cables and even comes with a 10 foot eight gauge R word extension. I used a Victron Smart Subt tj pull 95 amp hours out of my 100 amp hour battery and it never fell below 12.1b. No mone then meticulously tracked this charger’s logic. I was very impressed with the findings. This is a little on the expensive side if you do not get even at full price when you receive it. You will understand what you spend your money on because it is so robust. but when you do receive it, it will be apparent what you spend your money on due to the quality professional grade hardware’s lastly, with a 5 amp mode and the included 10 foot extension cord for the clamps you can melt us on your wall and charge anything in your house with it. Well worth the money. ... show more
Reviewed in the United States on May 28, 2025 by Robert
    • The Perfect Charger
The Perfect Charger. This charger will supply a continuous 25a if your battery can take it, unlike the others that say 40 amp boost but then charge at a max of 6 amps. The Genius Pro will charge about whatever you put it on and probably the safest charger out there as well. Those who give negative reviews saying short battery life has no idea what their buying, it has no battery… it’s a charger not a car jumper ... show more
Reviewed in the United States on April 9, 2025 by brian
    • Dissatisfied
Quit charging after 1 year I replaced several good batteries thinking it was functional
Reviewed in the United States on March 28, 2023 by phil irwin
    • Designed well, works well
Rather expensive, but very functional and easy to use. I got it as a battery tender for my Jeep Wrangler Rubicon and its stupid little auxiliary battery that causes problems.
Reviewed in the United States on May 29, 2025 by Stephen
    • Charges a battery
The container comes with an assortment of European power cords. What a waste! This is not a travel kit, it goes into a shop or garage and stays there, in one country. The power cord could be a couple feet longer. The extension cord on the low power side is well made. However, it should have a lock function or be more difficult to disconnect / pull out. The rather fancy soft transport case should have been made to be able to leave the power cords attached! I am very disappointed that an internal fan was required too cool the unit. This is a point of failure, especially when the unit is used on the go, occasionally dropped or handled somewhat rough like normal in a shop. It should be ok if mounted to a wall or kart, but oily dust will eventually clog the darn fan, requiring cleaning. The fan is noisy, but that should not present an issue in a garage or shop. I do like the post clamps. They grip and stay. ... show more
Reviewed in the United States on December 2, 2022 by Amazon Customer
    • Semi maintainer
Works exactly as I needed it to. I use it for long term storage for a Peterbilt with 4 semi batteries and it keeps them all charged and ready to turn on after a long time sitting.
Reviewed in the United States on November 7, 2025 by Francisco Valencia
    • Awesome tool that any mechanic should have
I bought this to have a bigger version of the NOCO genius 5 that I already had. I use these to repair batteries. I was extremely skeptical about "repairing" batteries but it does work. I had a powersports battery that would only hold 3v. So you could charge it and it would be 12v but overnight it would drop to 3v. It took about 7 repair cycles, but that battery now holds 12.7v overnight. Not all batteries can be repaired. Also, this is good for maintenance. If you have batteries that sit for extended amounts of time, running the repair on them helps keep them in top shape. ... show more
Reviewed in the United States on February 21, 2024 by Amazon Customer

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