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

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.

This works very well for me. It was an easy installation and has done everything I've asked it to do

I have had several of these units over the years, and have no issues with them. I've had the two bank mounted on a boat, a single Bank mounted on a car that's in storage, a dual bank that I use on a utility cart. No issues with any of them. For my latest project I use this for a spray rig. I have a deep cycle battery inside of a battery box, and have the single Bank unit mounted on the outside to charge my deep cycle battery.

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.

I have a 12-volt lithium battery for my truck camper setup, and I needed a way to charge it. I purchased MY 1st NOCO more than 3 years ago for my Jeep and it has worked flawlessly so of course NOCO was my 1st choice for my truck. The NOCO is inexpensive keeps my battery at full capacity with just a few hours of charge. It is super durable it stays in the dusty bed of my truck and has never missed a beat. It is super simple to use just connect the battery leads plug it in and look for the light that tells you it's charging!

This battery maintenance charger is an essential part of keeping your expensive car or truck battery alive and well. Your battery life will increase by 1-2 years especially if your driving habits are lots of starts and short trips of less than 10 miles (which barely recharges the battery between starts). At the end of the day, plug it in to an extension cord for the next days use. One thing which may be very important is the charging amps capability of the charger. 1-2 Amps will be sufficient for a motorcycle, ATV or small tractor battery, but a 5-10 amp charger/maintainer is my preference for a car or truck with higher cranking amperage output.

Unit appears to be well made. I used it twice and it seems to be fine. These kinds of products are very difficult to review, especially immediately after purchase. I hope it is good for my new Lithium battery. Again, it seems to be well made and is functioning as expected. The option for use with different types of batteries is nice. It stays on the "type" selected until changed - this is the best aspect thus far.

I purchased this device to hopefully remedy a parasitic drain on a vehicle that sits most of the time and I only use on the weekend as I have a company vehicle to use during the week. I kept getting in and finding that the battery was too low to even turn the engine over. After some blog reading, watched a couple Youtube videos and then diagnosed a parasitic drain on my system. In one of the blogs the author mentioned that this company's device could not only trickle charge my system while it sits all week to make sure the battery stays at an optimal level, it has the ability to condition the system to remove a type of crystal that forms inside the battery and ends up killing its performance. Armed with that, I came over to Amazon, found NOCO products and did some more research before settling on this particular one. I was skeptical, I have used trickle chargers in the past, how could this thing be different? The first thing I did was use it to charge the battery back to optimal levels. Next I used the conditioning function as I found out that when a battery discharges too many times, it causes a crystal to forms on the plates and this crystal absolutely kills the performance of a battery. I then reconnected the battery, permanently mounted this unit to my wheel well sheet metal and hooked it up. I fished the plug out through the gaps near my lights and have it so it is easy to plug in when I need to but not in a place where it will get ruined while driving. Kind of like using heaters for diesel engines in cold weather. I have had it on my vehicle for several months now and I am SUPER happy with it. With any luck I will be able to figure out what exactly is causing the abnormal parasitic drain but in the mean time, this little guy is worth EVERY penny I paid for it. I even used it to restore the life of an older deep cycle marine battery I had that seemed to be on its last legs. I just disconnected it from my car battery and hooked up the bad battery, charged it, then immediately ran the conditioning cycle. I ended up running that cycle twice as the first time helped but it still didn't hold over an 11 volt charge. Now its resting voltage is 12.7 volts and I cannot be happier. So it has paid for itself and then some by me not having to buy another marine battery. Hope my long winded review helps.