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

Easy to install. Works great and so much easier that taking out boat batteries to charge every time.

Work well for onboard chargers in my boat. Don’t take up much room. Were easy to mount. Very pleased.

I used these for cars that sit in storage during winter. Compared to the battery tender plus it seems better built and charges faster. Appreciate the agm mode and the on off button. I would just leave it plugged in with the battery tender but this one one can actually turn it off without unplugging. Got it on sale and think it’s a great upgrade

NOCO is my go to. Have this mounted in a dual battery 2500 diesel. Works great. You may need to purchase post extenders if you have a side post battery like me.

I have other of their charges and they work great. One thing i wish is the leads were a little longer or it was possible to add extensions like their other chargers. When i installed i wasnt able to mount it where i planned as the leads weren’t long enough. When i plugged it in the first time it only went to standby. I had to select the type of battery for it to start. At first i was pissed as i thought i would have to climb on the boat and do this every time. I actually left a 3 star review. After charging the battery going on the lake and then plugging the batteries up the charger came right back on to the same setting and charged without making the selection again. So im changing to 5 stars as im really happy they set this charger up this way as i was planning to purchase and install another charger so i didnt have to go into engine bay to turn on every time.

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.

So far so good. I installed it, had to use velcro to stick it to one of the batteries. It only showed 1 bar, but this morning they were(2) green. Fired up! We'll see what happens when the temperature drops into the teens?

Keeps my boat ready to go fishing at any time just plug it up and forget it

Funciona muy bien y es exactamente lo que pedí

Equipamento cumpri o informado, fácil de usar, uso na moto Ducati e Jet-ski See-doo equipamentos que requer um carregador diferenciado para não correr risco de danificar alguma eletrônica

Excellent charger, for your boat very efficient, waterproof and safely maintains your marine batteries. E specially for maintaining dual battery set ups. Very happy with my purchase. Highly recommend.

Excellent product that allowed me to resurrect 2 12v boat batteries that discharged below their minimum voltage. Installed on boat and now used as a charger and maintainer

Fitted this in my boat, (as it has 2 batteries). It's an extremely high quality product that keeps the batteries in tip top shape via the mains. I'll be hooking it up to a solar panel next, so I'll update here when I know the results.