Battery TenderPlus 4 Bank Multibank Charger - 5 AMP (1.25 AMPs Per Bank) - Smart 12V Multi Battery Charger and Maintainer for Standard, AGM, and Lithium LiFePO4-022-0148-DL-WH

Wow this thing is unbelievable I have three motorcycles in a car and it keeps all of my batteries fully charged

I needed this to maintain a bunch of batteries although I have a few Battery Tenders already. I use them because experience shows me they work and Deltran always stood behind their product when one went south on me while under warranty. This year I took home the 3 boat batteries which were added to the two waverunner batteries and the motorcycle and the summer car. This unit took care of the boat and the summer car and they work great as long as you buy the available entension lines so you can get them all out of your way and into the corners of the garage where you won't trip over everything. One plug for 4 independent units is nice. Easily worth the price if you need to regularly maintain 4 batteries and don't appreciate turning the ignition on next season and only getting silence or that weird clicking sound. This is particularly painful on a boat when you're "ready to go". Jump starting is not an option and what a hassle on the water - rutting around inside the bilge area. Just turn it on and leave it alone. The internal programming takes care of all the rest.TRUE STORY:I used my firt Battery Tender on my 1999 Porsche since new and only this year replaced the battery while having service performed and told it wasn't properly holding the charge - after 13 years. That made me a believer for life. Never have I had a battery last me anywhere close to that - not even half that. New Porsche batteries are $200 +/- installed. I will say that I did check cell fluid level annually and topped off with distilld H2O since it was a non-sealed battery from Germay (Varta?). That is all.Yes it will pay for itself, and eliminate frustration and save money if you use it religiously and I got religion a ways back.Thanks Deltran!!!

This four gang charge is more expensive than buying four separate chargers, so I balked at first. but it is better than having a tangle of outlets adapters, extension cords, etc. It did clean up the look of that area of my shop, and (with extension cables) made it more convenient to keep two dirt bikes and two street bikes charged and ready. As most every other reviewer says, you need the extension cables. They are standard SAE to SAE extension cables. I bought a 4-pack of 12 footers and that length works great for me. I do have a corner of my shop dedicated to motor toys, and park my bikes close to each other, so this works, with plenty of wiggle room. For my setup, I wouldn't need anything longer than that.Right now, the unit sits on the seat of one of the dirt bikes. Might make a shelf for it one day above or below the outlet.

Benn using this over the winter for three 4wheelers. it has been working well and has made my peace of mind better knowing i don't have to buy a new battery again when it gets cold outside.

I could see two or $300 for a 10 bank but a four bank come on. Good function so far just think it’s a little overpriced

I bought this for our camp. Since we don't live there I pull the boat and jet skis out of the water when we are not there. And since they would sit for long periods of time I was constantly replacing batteries. I have had to buy a battery since buying the battery tender. Very easy to use and install and was made out of quality materials. Slowly charges then batteries but most times will have them back to fill charge withi a night. Unlike typical battery chargers this thing weighs practically nothing and is easy to move around. Definitely worth the value!

It's mounted in a cargo trailer and charging two motorcycles, a riding lawnmower and spare 12V battery.

Very satisfied with the product overall. The unit isn’t as heavy as I thought so it was very easy to mount on the wall. I think the product description could have been more clear as far as pictures/description that the product comes with the SAE connectors. In the photos, it looks like it is only the alligator clamps so I did purchase additional extensions. The SAE connectors that come with the product are only 4.5ft long, so if you are charging multiple things you may need to buy the extensions anyway.