This product is working as advertised since I bought it a month ago, keeping my classic car batteries charged.

I keep my batteries on a slow charge if not going to be used for two weeks.

I also own a solid one charge system - that has a 10 year warranty, because the manufacturer knows these are crap - it is cheaper and much better to buy two individual solid state units.

They are 2 amps per channel so not a very fast charging rate but it isn't meant to be fast.

Looks like it puts out about 14.5Vdc when charging, at least the one side I am using at this time to a 12.5Vdc motorcycle battery.

Some other tricks out there for starting charging on batteries that have a low Voltage that might stop the BT might be good, like allowing bypassing of the low Voltage warning/stop if desired

this is great, charges 4 batteries, easy to hook up.

so you just can omit using the offending charging bank and go on using the others from my experience if anyone has found different I am all ears

Comes with accessories for easy charging

Keeps them fully charged at the proper charge, and let's me have piece of mind.

Even with limited sunlight they provide better charge results than the "Battery Tender"

Nice dual charge feature to keep our ATV batteries during the winter months.

Tender works fine with the extensions although batteries need to have some decent charge on them for the tender to work.

This battery tender is perfect for my needs and does an excellent job charging and maintaining the voltage level in my batteries.

The single reason I give it two stars instead of five (so far it works exactly as you would expect and the batteries charge more quickly than when using the single unit) is something I partially blame myself for not catching in the photograph of the unit.

Keeps my mower and ATV charged ready to go.

Love this tender; keeps my motorcycle and truck batteries well charged over the winter months at the same time

The LED on the front side show whether the battery is fully charged or not.

Attaching this charger and slowly charging and de-sulfating these batteries has gotten them to the point where they 'appear' to be as effective and hold a charge as well as ever.

If you plan on having the batteries on the shelf when charging, this is perfect

When the battery is 80% charged the green LED blinks, and when the battery is fully charged and is in the "maintenance" mode, the green LED burns steady

It will set unattended for 4 months so having the smart charging is a must.

The charging and maintaining performance of this specific battery tender is great

I've read that Battery Tender has the best charging algorithm built into their charges.

The advisory lights are clear to understand while charging or tending, and stay green as they sleep.

Love the 2 bank system, can keep both my jet skis charged up at the same time

I've been riding for well over 20 yrs and the Deltran Battery Tender is one of the greatest products you can buy for your cycle!!In the early years, I was playing with trickle chargers and/or starting the bike once or twice a month over the winter months, only to always seem to be pushing the bike down the alley come spring, trying to pop the clutch to get her started because the battery didn't make it through the winter with a decent charge

I use this 2-back to keep the batteries for my boat charged over the winter as well as summer.

My Airstream travel trailer has two batteries that I need to maintain a good charge on when the trailer is not in use.

...this is a slow trickle charge to extend the life of your batteries and maintain them when you're not using them.

When the battery is 80% charged the green LED blinks, and when the battery is fully charged and is in the "maintenance" mode, the green LED burns steady

This will keep my batteries in good charge during the 5 month winter storage

It has the 'three stage' micro-processor controlled charging program that works independently for each of the two batteries

Keeps classic car charged, 2 jet skis and my John Deere all ready to go at any time

Came with everything needed, works as it should.

I have been using this charger on my boat batteries for several months now and it works exactly as they say it would.