NOCO GENIUS2X4: 8A 4-Bank Smart Battery Charger (2A/Bank) - 6V/12V Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium

Bought this to maintain my batteries for the boat through winter, worked perfectly! Nice compact charger, I mounted it to my garage wall above the work bench, terminal clips are moderate to heavy duty and constructed well. NOCO makes good quality products at a decent price point which is affordable.

What a great product. We use this for our "not so often used vehicles" in our garage. We had the issue of our vehicles not being ready to drive when we wanted to take them out for a weekend spin or up to a local car show due to drained batteries. This eliminates the issue by maintaining a full charge. The multiple ports are awesome and the extension cables make routing a breeze. The size and compact design make it look great and a nice addition to our garage. I also use it for our other lawn, atv and other batteries. Simply connect and it's intelligent system detects the battery type, size and charging needs. Shuts off automatically and will turn back on if it detects a voltage drop. Love this thing!

Full disclosure, we use other Noco chargers onboard our school buses at our kid's school. They are very robust and keep the dual 12V commercial batteries fresh when the buses are not in use. I got this one for my motorcycle fleet(?) at home. Yes, the charger is more expensive than several similar. It's worth it. I've used Battery Tenders, and many others over the years. The Noco is best.The leads for the battery are not the standard SAE version. Noco uses a heavier duty connection that clicks into place. The alligator clips are designed to be removed if you need to permanently install a lead on your vehicle's battery inside your car. The unit comes with clear instructions. If you are upgrading for an existing SAE configuration, get the Noco-SAE adapter ($16 at this time). Just search in Amazon "NOCO GC009 X-Connect SAE Adapter Accessory Genius Smart Battery Chargers" .

Charger works very well charging my batteries for my hydraulics on my car

Easy to hook up 4 batteries. Has brought one of my older batteries that I thought needed replacing back to life. Great for keeping your batteries charged!!

Ordered this charger on prime day and finally installed it 4 days ago and everything seemed to be working well. However 2 days later port 3 is now flashing that the unit is under temperature and cannot operate. Emailed support and they say that it sounds like the unit is faulty to send it to them under warranty replacement. Kinda a little miffed that after 3 days my brand new unit needs to be replaced but at least support was fast to respond. Hopefully they are as fast to send me a replacement unit and not the 4 to 6 weeks they quoted. This unit comes with a 3 year warranty so hopefully this will not be a repeated occurance. Unfortunately because I delayed setting it up I am outside of Amazon's return/replace window. I have another charger by this company and have not had an issue with it so hopefully it's just bad luck, but only time will tell. I was impressed with the overall build of this unit and the accessories included with it but apparently something under the hood is less than optimal.Update 1: Reached out to NOCO support and they're responce was quick and efficient with an RMA claim paper. Just have to pay for shipping, which was 30 dollars to ship to the factory in AZ. So far my prime day purchase has not been the stellar deal it was supposed to be. I would have hoped that the company would have provided some means of shipment to them for a discounted rate but no dice. More updates to come.Update 2/11/23 new unit has performed as advertised and shows no signs of quitting. Despite initial unit failing new unit has been great and does a great job of keeping my motorcycle batteries up to speed.

I was saving to use when I install my solar system in my rv, couldn't because of hurricane Milton, but after the hurrican, my rv engine battery was dead, I open the box with this charger and plugged in and found 1 out of 4 charging positions not working, have to send back glad they have a 3 year warranty

Great product. Was a loyal Battery Tender customer for 30 years until recent purchases kept delivering 4 Bank Chargers with defective Bank #3.Went through 4 purchases and returns before I gave up and bought this NOCO.I LIKE IT BETTER NOW. And it’s less expensive.