Search  for anything...
NOCO

NOCO Genius GEN5X2: 2-Bank, 10A Onboard Battery Charger - 5A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries

  • Based on 6,122 reviews
Condition: New
Checking for the best price...
$129.99 Why this price?
Save $9.95 was $139.94

Buy Now, Pay Later

As low as $21.67 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 8
Order within 17 hours and 49 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 10A (5A per Bank)


Features

  • MEET THE GEN5X2 37% smaller and 43% more powerful than the GENM2. Its our most compact and advanced onboard charger yetengineered for peak performance in the harshest marine environments.
  • MULTIPLE BANKS A two-bank onboard battery charger rated at 10 amps total - 5 amps per bank. Independently charge 12V batteries in marine, boat, starter, and deep-cycle systems.
  • CHARGING MODES Selectable modes for each bank: 12V, 12V AGM, 12V Lithium, and 12V Repair Mode. Independently charge and maintain all types of lead-acid and lithium-ion batteries with precision.
  • ENJOY PRECISION CHARGING An integrated thermal sensor adjusts charging based on ambient temperature, preventing overcharging in heat and undercharging in cold for optimal battery performance.
  • CHARGE DEAD BATTERIES Charge batteries from as low as 1 volt, or use Force Mode to manually begin charging batteries down to zero volts to recover deeply discharged or neglected batteries.
  • REDEFINED MOUNTING A simplified mounting system allows for fast, secure installation in any orientation - even upside down - with an integrated anti-vibration backing to isolate shock and noise.
  • DESIGNED FOR WATER A fully-sealed onboard charger rated IP68 for waterproof protection. Survives brutal life cycle testing, including thousands of hours underwater in the harshest marine conditions.
  • WHATS IN THE BOX GEN5X2 10A 2-bank onboard charger with 72-inch DC cables and 3/8-inch eyelets, 72-inch AC cable (Type-B), and two mounting screws. Backed by a 3-year warranty and engineered in the USA.

Description

The NOCO GEN5X2 is a fully-sealed, waterproof onboard battery charger rated at 10 amps total—5 amps per bank—designed for 12-volt lead-acid and lithium-ion batteries, including flooded, AGM, gel, and LiFePO₄ chemistries. It’s 37% smaller and delivers 43% more power than the previous-generation GENM2, making it our most compact and advanced charger yet. Each bank operates independently, allowing you to precisely charge and maintain two batteries simultaneously, even if they differ in type or condition. Selectable charging modes—12V, AGM, Lithium, and Repair Mode—offer tailored charging for battery health and longevity, while an integrated thermal sensor automatically adjusts charging in hot and cold climates to prevent overcharging or undercharging. For severely discharged batteries, Force Mode lets you manually begin charging from zero volts, a critical advantage for recovering deeply neglected batteries that other chargers can’t detect. Engineered for the harshest marine environments, the GEN5X2 features an IP68 rating and has endured brutal life cycle testing, including thousands of hours underwater. Installation is fast and secure in any orientation—even upside down—thanks to a redesigned mounting system with an integrated anti-vibration backing that isolates shock and noise. The GEN5X2 comes with 72-inch DC cables with 3/8-inch eyelets, a 72-inch Type-B AC cable, two mounting screws, and a user guide. It’s backed by a 3-year warranty, engineered in the USA, and certified to UL1236, ISO 8846, and 33 CFR 183.410 for safety, ignition protection, and marine compliance.

Brand: NOCO


Color: Black


Product Dimensions: 7.2"D x 9.15"W x 5.39"H


Item Weight: 4.2 Pounds


Output Voltage: 12 Volts


Output Voltage: 12 Volts


Input Voltage: 240 Volts


Battery Charge Time: 1 Hours


Current Rating: 10 Amps


Amperage: 5


Compatible Devices: 12-volt lead-acid and lithium-ion batteries (flooded, AGM, gel, LiFePO₄)


Connector Type Used on Cable: 12-volt battery connector


Number of Ports: 2


Item Dimensions D x W x H: 7.2"D x 9.15"W x 5.39"H


Item Weight: 4.2 Pounds


Specification Met: CEC, FCC, UL


Color: Black


Brand: NOCO


Mfr Part Number: GEN5X2


Global Trade Identification Number: 58


UPC: 046221190458


Manufacturer: NOCO


Model Number: GEN5X2


Item Type Name: NOCO Genius GEN5X2, 2-Bank, 10A (5A/Bank) Smart Marine Battery Charger, 12V Waterproof Onboard Boat Charger, Battery Maintainer and Desulfator for AGM, Lithium (LiFePO4) and Deep-Cycle Batteries


Warranty Description: 3-Year Limited


Built-In Media: (2) Black Truss-Head Screws, GEN5X2 10A 2-Bank Smart Waterproof Onboard Marine Battery Charger and Battery Maintainer (120-240VAC), Onboard Marine Battery Charger User Guide


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 8

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Excellent Charger – Easy Install & Great Battery Maintenance
Size: 10A (5A per Bank)
Review Image by Rick M
Review Image by Rick M
I installed the NOCO GEN5X2 onboard charger in the engine compartment of my boat, and it has been a fantastic upgrade. Installation was very straightforward. The unit is compact and rugged, and it mounted cleanly in the engine bay without getting in the way of anything. Wiring was simple and well-labeled, so the whole process went smoothly even working around other components. One of the standout features is the LED indicators. I really like being able to quickly check the status of each battery individually at a glance. Whether it’s charging, fully charged, or in maintenance mode, the lights make it easy to know exactly what’s going on without any guesswork. Another huge benefit is how well it maintains the batteries during long periods when the boat isn’t in use. During the off-season, it keeps everything topped off and conditioned, which helps extend the overall life of the batteries. That peace of mind alone makes it worth it. Overall, this charger is reliable, easy to install, and does exactly what it’s supposed to do. If you’re looking for a solid onboard charger that performs well and gives you clear status feedback, this is a great choice. ... show more
Reviewed in the United States on April 13, 2026 by Rick M
    • Great boat charger
Size: 10A (5A per Bank)
This is a great charger from a great company but pay attention if you’re hardwiring it! Do not cut the wire before the rubber on the charging leads. That is a temperature sensor that is wired in with (2) 26 AWG wires. The charger won’t work without that. I did make that mistake and was able to splice it back in and shorten the wire as I’d like. Now it’s portable but it’s designed to be mounted and will charge all battery types without fuss. Super easy to use as well. ... show more
Reviewed in the United States on March 17, 2026 by Cody The Outdoorsman
    • Good charger, could use longer leads
Size: 10A (5A per Bank)
Super good battery tender. I mounted it in my 1997 F350 7.3 and it keeps the dual batteries charged perfectly. Finding a good place to mount it was rough cause of the length of the leads. Another foot of cable and it would have reach both batteries with no issue but I managed to get it on, it's just a little tough. The lights on it are easy to see and labels easy to understand. It functions how it should and makes long storage easy for the batteries. ... show more
Reviewed in the United States on March 9, 2026 by Travis A.
    • Charger two batteries at the same time.
Size: 10A (5A per Bank)
Works well for my two lithium batteries on my boat. I've even brought a couple of other batteries back to life before installing on boat .Grateful product.
Reviewed in the United States on April 2, 2026 by Mark Hurtubise
    • Noty
Size: 10A (5A per Bank)
Easy installation. Works great.
Reviewed in the United States on April 2, 2026 by James Lawson
    • Potential Issue w/ 1 Bank Failing For Some but Great Warranty
Size: 10A (5A per Bank)
First off, this is my 6th NOCO product and all have been awesome. Great chargers, boosters, etc. Quality and performance has been superb! This GEN 5X2 forced me to have to use their customer service, warranty, etc. which has also been stellar. These GEN 5X2 dual bank chargers seem to have a common issue with one of the banks failing. One bank, mine was the second bank that failed, blinks between the charge bar and the standby lights. No matter the battery, the fuse, the connection, etc. A way to test it is to use a multi-meter to test for continuity between the positive and/or negative battery lead on that bank with the a/c power cord prongs - all disconnected, unplugged, no power, etc. The good bank will have some continuity like 36-37ohms. The bad bank will have nothing, pure open circuit. If it happens within the return with Amazon then use that. Otherwise, if its under the 3yr warranty then use no.co site to contact customer service for a warranty claim. Mine was after the 30 day return window. Initially buying it we only had one battery on our boat, knowing we were getting a second house battery. A couple months later we installed a second house battery on our boat and connecting the second charger bank, it immediately started the dreaded blink between the first charge indicator and the standby light, so that bank never worked. Not sure it is an immediate fail for others but was for ours. NOCO customer service was quick and easy. I reached out late at night with their request a call option on their website. The next day got a couple calls because I didn't have my phone near me, an email with troubleshooting steps, and next steps for a warranty claim. They'll let you ship it in and wait for a return after receiving and testing the failed unit. Or, they'll let you buy a replacement from their website - which was cheaper than here on Amazon - and refund the purchase once they've receive the return faulty unit and test it to verify the unit is faulty. I chose this option for a quicker replacement. 4 stars mainly for the unit failing but definitely love their products and am now a fan of their customer service. I'll follow up with review if the replacement unit fails and drop stars. If all is well, I think 4 is sufficient for an otherwise great product and company but consideration for this mishap. ... show more
Reviewed in the United States on June 1, 2024 by hollandbr2
    • Great upgrade for a boat
Size: 10A (5A per Bank)
So far this has been working great, I installed it on my pontoon boat for my trolling motor batteries. I went fishing yesterday trolled around the lake for 5 hours in high winds, and used my spot lock several times when I returned home and plugged this charger in one of my batteries had 1 bar and the other had 2 showing, when I woke up this morning my batteries were full and the charger was just maintaining the charge. It was a very nice addition to my boat, and makes charging my batteries easy, by just plugging in one cord and letting the charger do the work. It works great with my lithium batteries. ... show more
Reviewed in the United States on April 17, 2026 by Shannon Beevers
    • 12 v just keeps blinking Doesn't go to charge like other bank
Size: 10A (5A per Bank)
The media could not be loaded. One bank stopped working Called product support They were very rude and said they couldn't help because it was past warranty date I expected it to last longer than it did
Reviewed in the United States on April 14, 2026 by Janet

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...