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NOCO Genius GEN5X3, 3-Bank, 15A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries

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$174.96

$ 68 .99 $68.99

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About this item

  • Meet the GEN5X3 - Similar to our GENM3, only better. It's 37% smaller and delivers 43% more power. It's one of the best performing onboard marine battery chargers we have ever made.
  • Multiple banks - A three-bank onboard battery charger rated a 15-amps - 5-amps per bank - for 12-volt batteries, including marine, boat, starter, and deep-cycle batteries.
  • Charging modes - Independently charge and control each battery bank with selectable charging modes - including 12V, 12V AGM, 12V Lithium, and 12V Repair Mode - for all types of lead-acid and lithium-ion batteries.
  • Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charge dead batteries - Charges batteries as low as 1-volt. Or use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Redefined mounting - A simplified mounting system allows for quick and easy installations in any direction - even up-side-down - with an integrated anti-vibration backing to isolate shock, vibration, and noise.
  • Designed for water - A fully-sealed and waterproof onboard battery charger with an ingress protection rating of IP68, but has survived brutal life cycle testing, including thousands of hours underwater.
  • What's in the box - GEN5X3 15-amp 3-bank waterproof onboard marine battery chargers (120-240VAC) with a 72-Inch DC cables with 3/8-inch eyelets and a 72-inch Type-B AC cable, (2) self-tapping mounting screws, user guide, and 3-year warranty.


Introducing the GEN5X3, our most rugged, compact, and powerful, onboard marine battery charger we have ever made. The GEN5X3 is designed to charge and maintain up to three (3) 12-volt lead-acid and lithium-ion batteries, including flooded, gel, AGM, and deep-cycle batteries. Each 12-volt battery bank provides up to 5-amps of pure charging power, plus doubles as a battery maintainer and battery desulfator. Included is a GEN5X3 15-Amp 3-Bank Waterproof Onboard Marine Battery Chargers (120-240VAC), Self-Tapping Mounting Screws, User Guide, 3-Year Warranty and certified to UL1236, ISO 8846, and 33 CFR 183.410.
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Shannon Butts
Reviewed in the United States on January 25, 2025
charging 3 batteries on small 17 foot boat . compact and works great. easy to install and display for charing is well lit.
Darryl
Reviewed in the United States on January 15, 2025
works great
Chuck Hensley
Reviewed in the United States on August 26, 2024
Works well. Had to run extra lines to my starting battery at the end of the boat. Be aware that NOCO recommends leaving the fuse at the charger when splicing line in. I added a second fuse at the battery to protect it. No issues so far with the charger. Also installed a NOCO waterproof plug that made it easy to plug the charger in, a must for pontoon owners.
Outdoorsman Extrodinare
Reviewed in the United States on June 25, 2024
Last year we purchased Li batteries for my trolling motor. Didn't know that you need a Li charger too. I had a portable one but it needed to be switched to charge both batteries. This eliminated all the swapping hooking up and unhook each time I wanted to go fishing. It also charges my starting lead acid battery too all with only one plug. Works great! It also maintains all three batteries automatically and remembers the last setting, so I don't have to get into the boat each time I charge. Great value for the price. Install depends on your boat and how easy or hard it is to run wires. I did have to lengthen the wires to the starting battery as it is in the very back of the boat. The charger also tells you if you switched the wire polarity. I did have to install a switch between the two Li batteries. As this doesn't charge a 24V system but will charge each battery separately. Just need to remember to switch it back to 24V when using the trolling motor and then back to 2x 12V when charging.
Tom Oak
Reviewed in Canada on May 13, 2024
I waited two seasons of charging before this review. I have multiple battery types and different requirements for charging and storing batteries charged and ready for use. This unit is literally plug and play, safe and incredibility reliable for keeping the batteries not only charged but conditioned while in storage over the winter. Highly recommend.
F. Phillips
Reviewed in the United States on March 27, 2024
I recently converted my boat to a 24-volt system, which of course, required adding a third battery. I've had good luck with my two-bank Noco charger that came stock in the boat for the past three years, so decided to move up to the three bank system.One great thing about the charger is that it fit the same footprint as my two-bank, so it bolted right in to where the old one was fit from the factory, no drilling of new holes required. I also like the fact that if I decide to upgrade to lithium at some point, I won't have to upgrade the charger again. The display is very easy to read and much clearer than the two bank that it replaced. At a glance, I can tell exactly where all of my batteries stand. I've only had it a couple of months, but it's performed very well in that time, and I expect it will continue to do so.
Edward Lucas
Reviewed in the United States on October 31, 2024
I did not like that. There was no notifications in the paperwork, as to the fact that you cannot extend the linkage wiring between the box unit and the battery. And trying to do this unit would not handshake with the battery, I was only talking about an 8 foot extension with number 14 gauge wire. However, after shortening it back to the norm, the unit charge the battery fine. This is an important factor because Location of the hard box is important to get to in order to make selections on the screen.
Eric
Reviewed in Canada on September 6, 2023
It installed easily in the boat. Smaller than last one. Lighter than last one. Hope it lasts as long
DW
Reviewed in Canada on September 21, 2022
Installed on boat. Had to cut and splice an extension into one cord to reach all batteries. I was expecting a connect simular to the 2x4 charger. The connectors on this one are hard wired.
Laszlo M Marozsan
Reviewed in Canada on August 2, 2022
Very easy to install and get going. Took only a few minutes.Only thing I would mention, and this is from my own personal experience in the first few days, is that I have one onboard battery exclusively running my refrigerator. It draws about 4.5-5.5 Amps.The charger maintains the battery, but I have gotten a fault twice now where the charger thinks the battery is no good because it is not keeping charge (especially when the fridge is drawing more than the charger is putting in). So it faults and shuts down that line for charging and my battery discharges. When I shut the fridge off and reset the charger, it will charge that battery back up to full and no issues.So I might need to return this unit for the 10x3 unit to ensure adequate charge is available to maintain the battery with the fridge going.But awesome product and easy to install and use. I would recommend these to everyone.
Justin H.
Reviewed in Canada on August 1, 2021
Easy to install and very clear directions. I have charged the 36v trolling motor battery bank a few times and its been quick and easy..cleary indicates battery level and doesnt get to hot. Definetly would recommend to a friend or buy again.Time will tell about durability but so far so good.
Customer
Reviewed in the United States on November 4, 2021
I purchased this 3 bank battery charger as a budget alternative for my bass boat. I have 3 12 volt batteries on board and 2 of the batteries are wired into a 24 volt trolling motor.First I’ll go over the install. If you know how to use a screwdriver and a wrench. You can install this product in your RV camper or boat. Everything is clear and simple to understand.Set up was a breeze after I got it installed. I simply selected my charging mode for my battery type. Confirmed it was on the proper voltage. And powered each bank up and away it went. It’s nice because even after you unplug it. It remembers your settings and defaults back to those settings for each bank.My first trip out with the new charger. We noticed an immediate improvement in battery life. We got an extra hour or so on our batteries on the first charge. We don’t run them dead. But I have a battery meter and I keep track of my usage and fishing times. It seems to have only gotten better as I have allowed the charger to maintain my batteries also. The batteries are on their second season and they’re functioning as if they were brand new.Durability seams very good. It gets tossed around a little in my boat and we have had zero issues with it. I haven’t yet tested out the waterproofing of the unit, thankfully. Because it is installed inside the dry area in my bass boat.Only reason I gave waterproofing a 3 star is because I cannot confirm or deny its quality or lack thereof.For a budget smart charger. These things are great. Buy with confidence!
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