Battery Tender 2-Bank Battery Charger

I bought this charger back about 3 months ago, and it worked perfectly. But, something happened, and the 1st side stopped, but the 2nd side kept working fine. I reached out to the manufacturer, and they were very helpful, and sent me a replacement unit. The customer service was excellent. They were in contact with me almost daily, asking for pictures, and wanting to know all they could to determine what went wrong. We worked together and I hope they got constant updates from me, as well, and now I have a brand new, replacement unit thanks to their service and dedication. I highly recommend them for their product, and for replacing one that must have had some sort of defect. It's great to know that they warranty their product and how good they were working with me to get me back up and with a new charger that I will be able to use to keep my batteries charged. Kudos to their staff and all they did.

Not much to add to the great reviews so far. This thing is great. I have 2 batteries in my boat and 2 in my diesel truck. I installed the plug-in leads on the boat batteries for easy, semi-permanent, solid connecting installation. The clip leads I'll keep here at the house for the truck since that's a short term need. It's easy, light, compact and does the job well. Just plug it in and go and I don't have to worry about weekly trips up to the boat to switch a big clunky battery charger from battery to battery. When I need to top off the truck batteries (it helps keep them healthy) I'll plug it in here and not have to worry about disconnecting the 1 battery I'm going to charge so the other won't leach off it. I can charge both evenly and not put undo draw on the stronger of the 2. I just wish I would have gotten this thing a long time ago!!! Update 10-7-2019 In 3 months this Tender will be 10 years old!! It hasn't missed a lick and for the last 6-8 years this has been kept on my boat constantly on when it's not in the water. It's connected via the plug in pigtails to 2 Optima's. Optima isn't what Optima used to be (only buy Odyssey anymore which are well worth the price) so this tender has kept them healthy. I pull it off and put it on my truck (2 batteries also) every now and then although with Odyssey Extreme's in it now, it hasn't been necessary. I'd consider mounting this Tender in the boat more permanently for more convenience. FYI, I just noticed the price is exactly what it was in 2010 when I bought mine. I'd have expected them to go up, and still, they'd be more than well worth it!!! 5 Stars isn't enough.

I'm pretty loyal to the Deltran brand and this one doesn't disappoint. I was worried that the cords might not be long enough for my application (boat batteries installed 5' apart), but it worked nicely. The only thing that was both a surprise and a disappointment was that the ring terminal option is very small in diameter. Like maybe a 1/4" post diameter max. Unlike their previous choices for alligator clips vs. ring terminals, this doesn't include separate pig-tails for each. Rather, the ring terminal is screwed into the alligator clip and to choose that option you simply remove the alligator clip from its ring terminal mate. In the past they provided separate pig-tails and I find their current design far more limiting due to the small diameter of the ring terminal. Nevertheless, working with the alligator clips works for me (but honestly, I would have preferred to install these pig-tails on the battery's tandem screw posts). Whatever. One thing that they don't tell you is what happens when you unplug it. Well, the device comes up defaulting to lithium (hmmm, strange). The boat has the most basic standard flooded batteries. When you unplug the device it "chooses" the last setting you used so that means you don't have to constantly tell it what battery technology you're using. It would have been a really annoying oversight had they not programmed the charger to do this. Not a fatal flaw but an inconvenience nevertheless. So - NON ISSUE - thanks Deltran for anticipating this. Also, the unit is huge and rather heavy compared to their other products. It's mountable, but for me it's too big to mount in the compartment that would have made the most sense. Long way of saying I'm happy with this and would definitely recommend to friends and family - but with warnings about the size and ring terminal limitations.

This item was delivered and thrown into 2-3” deep puddle of water in the pouring rain outside my fence , all on security video , luckily it was raining otherwise, somebody might’ve stole it ! So as it laid in the puddle for many many hours, the box has soaked up the water and his product sat underwater for hours. I let it dry out for a couple of days after pouring all the water out of it. And I plugged it in and to my surprise it worked And it is still working weeks later I was going to return it, but it takes too long to get a refund so I’m gonna take the chance since it works and hopefully it stays working so the product is awesome since it runs after being underwate , so I give the product 5 STARS !!! The delivery guy and Amazon I would give only 1 STAR , because the driver didn’t want to get wet so he threw the package in the puddle not even in my yard over my fence outside my yard about a foot from the sidewalk and if it would’ve got stolen they would’ve told me it was delivered And there’s nothing they can do about it unless I make police report Which would be false because it was not stolen on my property because Amazon did not put it inside of my property. Amazon is really getting bad. They used to be good. This is happened many of times in the last year or so. maybe Jeff Bezos should stop taking all the money and pay his Drivers better so they do better !

This little unit is perfect for my needs. I am stationed overseas and use it to keep the dual batteries in my diesel F350 charged. For the price and convenience, can’t beat it!

Used to keep two motorcycle batteries charged between rides. PRO Works well and fast to keep motorcycle batteries fully charged Cables to battery are long enough to connect to 2 motorcycles parked from to back Cables are medium to high quality Fit of cable connectors is firm and good Unit base looks high quality Green LEDs lights are easy to see and signal charge state and issues (Yellow LED) Unit housing is black plastic and has feet that could be used to mount unit to a wall or table for permanent fixed use Comes with all the accessory cables you should need for use Box and packing is well made for safe damage free shipment CON Power cable from main unit to AC plug in seems short to me for many Garage outlets. Works but not great. LED lights can only be seen from the front of the main unit. Side and top views cannot see charge information Cost is about the same as two single units that may have more flexibility in placement and use Instruction are printed so small of print forget trying to read it with normal eyes. Even with reading glasses. Either go on line to view it or do what I did, take a photo of the pages of the instructions and view them on a larger PC or Tablet screen

Excellent tender

Easy to use, so far it works perfect connected using a quick connector. I made a test to confirm what happens if power on the outlet fails... and it keeps battery configuration, so no issue if power goes off and back due an outage.

Excelente producto para mantener la batería de mis motocicletas cargadas. Lo mejor es que con su carga inteligente se puede dejar conectado durante todo el tiempo que se desee.

Iam a snowmobilier and it's awesome to have the unit charge 2 machines at once.unit is light weight and at night when we are up north at -30 nice to know machines will start in the trailer since they do not have pull starts...really handy to have plug ends on batteries all the time. Cheers James

Se supone que o es lo suficientemente poderoso para cargar una bateria de carro desde cero, sinceramente no he comprobado eso, pero es algo a considerar cuando se obtiene. yo la consegui para mantener la bateria de un auto y la de una moto y lo hace perfectamente bien. A pesar de haber dejado de usar el carro mes y medio no tuvo nigun problema de encendido cuando lo volvimos a usar. Es muy versatil para tu cochera y si lo recomiendo.

good product at good price

Overview I use this to keep the batteries in top shape on a pair of motorcycles. I have the quick connect harnesses on the batteries…no hassle with access and alligator clips. I no longer remove the batteries in our beautiful Ottawa winters…and have never had an issue even with the bikes sitting in storage for the entire winter. The cost of one lost battery is more than the cost of this tender…with the optional quick connect harnesses. Pros • Fool proof • No more lost batteries Cons • They should include the quick connect harnesses. I’m sure the vast majority of people do/will use them. Recommendation – Would buy it again and would highly recommend. <---Click below if you found this review helpful--->