NOCO Genius GEN5X1: 1-Bank, 5A Onboard Battery Charger - 5A Per Bank, 12V Waterproof Marine Charger with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries

Bought this for an onboard maintainer in a diesel pickup. Mounted it on the ledge above the brake fluid reservoir with 3 M heavy duty outdoor velcro. Close to the battery and rock solid. This velcro has adhesive that rivals super glue. Be sure you have it where you want it the first time. ( ask me how I know). Ran the wiring in semi rigid loom and connected the ring terminals to the battery bar. Plenty of wire included ( 6 feet each for power and battery wires) . Connected the power cord to a waterproof external receptacle mounted under the vehicle's bumper. Works great, fully automatic. Returns to your last setting for battery type. No need to open the hood and select battery type each time you plug it in. For the quality, it's a bargain. Short trips or long periods of storage in a diesel are hard on batteries and they're expensive. This maintainer is cheap insurance. I plug it in about once a week and it takes about 2 hours to top off the batteries. It balances the parallel batteries perfectly, both at 12.7 volts when finished.

Incredible charger, well worth the money. I've used it on AGMs and acid batteries and works great. I had 2 AGM batteries that had zero voltage and the charger is able to push a charge to the batteries long enough to trigger the charger to get them back to full capacity. Quality is great, it's compatible with every automotive battery on the market and helped bring back numerous batteries instead of me having to go buy new ones. Well worth it.

This is exactly what I was looking for for my Harley Davidson to charge. It keeps the battery up excellent. Very easy to use great value for the money you won’t be buying as many batteries that’s for sure. Indicator lights tell you when it’s charged straightforward easy to use.

I puchased this to keep the expensive type 31 batterys from sulfating on my John Deere backhoe. So far it has performed admirally. I like the fact that it has the capability to charge a totally dead battery if needed, which most other charger / maintainers won't do. I selected Noco over the brand I used to buy after seeing a comparative product review on the "Project Farm" YouTube channel.

I installed this on our class a diesel pusher. This is hardwired to the chassis batteries, two lead acid group 31’s. This multi stage charger is perfect. Floats both chassis batteries at 13.58 vdc with minimal power draw. Robust and waterproof with temperature compensation. Also works on AGM and Li batteries. I mounted it in the outside battery bay compartment as a permanent installation. Should save on electricity use, as our old Heart Freedom Combi inverter used roughly 3a 24/7 charging the house and chassis batteries. I converted the house to a 310 ah Li mini with its own Li profile charger, so the inverter charge circuit is now happily turned off. No more constant inverter hum… Don’t be tempted by inferior cheaper battery maintainers, trust me I tried and sent back two other brands because they didn’t work as advertised. Like not even close. This NoCo charger works exactly as advertised, however NoCo does not specify what their charge voltage profiles are. I also have a ten year old NoCo Genius 750ma battery maintainer for my motorcycles and atvs. Still going strong and the batteries last years longer with proper storage charging. Let’s face it, batteries have become very expensive. These chargers literally pay for themselves in short order. NoCo is the brand you want to purchase for the longest battery life because their charge profiles are optimal.

Used it for a 3 week period while I was out of town. Worked well as car started immediately upon my return.

I have a 2006 Corvette that I converted to a lithium-ion battery from Braille. When I did this, I wanted to make sure I had a compatible battery tender to make sure the Braille battery would stay nice and healthy during prolonged periods the car is not used. The C6 Corvette is known for battery run-down issues, and I knew this problem would be exacerbated with a lower reserve capacity battery, but I wanted the weight and space savings. I originally had a quick disconnect system in the car, the inconvenience of this became clear whenever I needed quick access to the car, so I decided to install an on-board battery tender. The NoCo unit is very small, and lends itself to being installed in a multitude of locations. The weatherproofing helps a lot, especially if you mount under the hood. I decided to mount inside the rear compartment nearest the battery. This may be an issue for Corvettes with a full-size battery back there, but for me, since the Braille battery was already a smaller footprint, it made fitting everything inside the compartment easy. Long story short, the unit works perfectly. The Braille battery in my car is still healthy and the car hasn't really moved since it's not my primary car. If you're looking for a small tender that can look after a multitude of different batteries (lead acid, AGM, litihum ion), this is the one you want, ESPECIALLY if you're concerned about space and want to mount it on the vehicle in question. NoCo has many other options for garage tenders as well if you aren't interested in mounting on-vehicle, and in my opinion they're the best when it comes to jump starters and tenders. They have many products to choose from, and I highly recommend this unit, as well as anything else made by NoCo. I have one of their jump boxes and the power and footprint are very impressive. I've started equipping all my vehicles and my family with their products.

Excellent unit for cars that's not driven often. Well built and easy to install in your car. I put mine in the trunk.

I have this installed in my slide in truck camper. It is maintaining and charging its battery when connected to shore power. SO far I have to say, I like this unit. I had an older NOCO that was great, and still is... but it is rated much lower (2.5 AMP as I recall) and did not do Lithium. I decided to up my game and use this in its place and keep the older unit as a spare. The Gen5X1 is a great unit. Its small size and higher AMP rating along with its smart settings and maintainer capabilities make it a real winner in my books. It works great, it easy to use and is very solid. All NOCO devices have excellent connectors and cables as well as a decent quality feel and function. So far after about 1 year-ish I am impressed. RV, Camper, Marine, you name it... this is a handy little unit with some power and versatility.

Is a solid product and it’s waterproof.

Tremendous charger. It’s next level though slightly more expensive. Worth it in my opinion. Just know that this unit has no alligator clips and only battery terminal eyelets and is a single continuous cord from the charger block to the eyelets. This is more suitable for permanent mounting than a temporary charge.

I got this to replace my old battery charger which cannot charge Lithium battery. This one works wonderfully! 30 mins is enough to fully charge my Lithium motorcycle battery. A super fast charger that is able to charge all kind of 12V battery, all you need is just push a button to change the mode. This is my 2nd Noco product after my jumpstarter and I can say Noco never disappoint.

Works great as my auto start worked all winter after installing this under my hood. I first bought a 2 amp version and it did nothing against the canadian winters and my auto start would not work in a morning as the 2 amp charger was not even trying to keep my battery alive in the -30c winters. I upgraded to this 5 amp version and never looked back as I have it so when I plug in my block heater it also power up this charger. Every morning now when I hit my auto start button on my keys the truck fires right up and my battery light is green every morning. We'll worth it's money so far as I now don't need to boost my truck like I use to have to with the 2 amp charger