ProMariner Gen 3 ProSport 20 Amp 12/24 Volt 2 Bank Waterproof Marine Battery Charger 43020 - Perfect for Boats, Yachts & Marine Vehicles - Fast Charging & Corrosion Protection

Ok...I didn’t go back and review what others have said however, it seems like I remember some saying the batteries weren’t being charged fully. I had NOT had this problem but, my batteries are only a few months old. I use them for trolling and only for my 45lbs thrust trolling motor. I troll for Kokanee and trout. I start at sun up and many times have had to go until almost sundown to get my limits. About 4 hours into the day the first battery would be too low to use and I would switch over to the other battery. I have yet to drain both batteries to a level which would be too low to continue (not even close). So it charges both batteries extremely well in my opinion. As far as connecting the minder to the batteries I must say it shouldn’t take an education- it was simple and easy. I sure in more confined and intricate uses it would make the task a little more thought provoking but the actual connection was simple positive to positive and negative to negative. I did not connect my running battery to the minder and therefore making it extremely easier. Though after reading the directions, it didn’t seem difficult. But for my application I would have needed a 3 bank system and the one I bought was a two bank system. I have had this product now for approximately 3 months and have had to fully recharge my batteries at least a dozen times and so far it has worked flawlessly! I would highly recommend this product.Misleading product description (okay, actually it's dead wrong), but seems to be a pretty good charger otherwise.Ignore the product description that Amazon provides, I'm not sure where they got that. If you check the company's web site, no where do they say this is a three battery charger.This is for charging 2 x 12 volt batteries, period. It can handle the batteries separately or as a 24 volt bank. Not banks of more batteries, which is where I disagree with the company's description of this product. The manual emphasizes several times: "One bank cable connects to no more than one battery". To me one battery is not a "bank". A bank is multiple batteries.http://promariner.com/wp-content/uploads/2013/05/ProSport-Gen-3-Manual.pdfAlso, when you're using this to charge a 24 volt bank, it's basically a 10 Amp charger. However, it can vary that it the batteries are in different states of charge, i.e. it can put out 15 Amps to one battery and 5 to the other, if that's what the batteries need. If you're using it to charge two separate 12 batteries, you can think of it as a 2 x 10 Amp charger that can shift unused current around to where it will do the most good.Anyway, enough with the negative stuff. I think the Amazon needs to change the description and I think the company needs to be more clear about how it describes this product.In every other way, this appears to be a well made, well thought out product with some nice features. So, despite the issues around the product description, I'm giving it four stars. I'll come back after I've used it for a while and update.Update: 2015-05-30:Been using it for over a month, seems to work well. Charge batteries, use batteries, charge them again, they still work! I've been through about five charge/discharge cycles, a couple of them fairly deep.Style: 20a 12/24v 2 BankVerified PurchaseBuyers beware. The description for this battery charger is misleading, and implies that this charger is both a 12 volt and a 24 Volt battery charger. That's not true. This is a dual 12 volt battery charger. It can only be used to charge a 24V battery bank by connecting the 2 separate outputs across each 12 volt battery that is connected in series. It is incapable of charging two individual 24 volt batteries or two separate 24 volt battery banks. Buying 2 lesser priced 12 volt battery chargers can accomplish the same thing this will do and actually provide more versatility. The manufacturer is giving false advertising and this battery charger is over priced for what it's capable of doing. I sent it back and had to pay a restocking fee.I like this make and model... very easy to use and most importantly, it charges perfect Jose M Volio Ch. Costa Rica.I bought it to function as a 24 volt charger. This is a 12 volt charger, description is misleading.When we bought our Crownline 215ss last year, offered as a factory option, though not installed on our boat, was an on-board battery charger. The way we use the boat, I don't run the engine a whole lot before stopping and putting the key on 'accessory' to listen to the radio and float around, so it doesn't give the alternator a lot of time to charge the batteries. I decided that since it is layed up in storage for five months of the year, and my storage facility accommodates chargers, that I would install it myself.It was actually very easy to install, having some mechanical know-how. The most stressful part was drilling holes in my brand new boat ?. I also installed a Marinco charging inlet so I could just plug in the charger from outside the boat.The instructions were well done and explained everything well. The boat has a two battery system so I got the Prosport 20 model. The charger itself feels like a quality product. So far, it does a nice job of keeping the batteries charged inbetween uses, and the indicators on the front are clear and easy to understand. Nice product!This is the third ProSport 20 duel- I have bought and owned in one of my 7 boats in my life time. Works flawless from new out of the box, includes System Check for any human and or Mechanical error on any power cable regarding all Batts, we had a wiring issue last night(Wiring schematic was shown from real and when turned around and mounted it was backwards to the way it should have been wired) and it alerted us to it before we hit the open water, other wise we may have experienced a failure off shore, or worse a fire. This Device can literally save your life and that of your family and friends with that feature, and after it happened we made the changes to get everything wired correctly according to the wiring schematics of all electrical components and were rewarded with a Green check mark that all circuits and battery wiring was correctly installed and that charging and maintenance will begin.After this happened yesterday, I got an email from Amazon asking for a review of this last one I just bought and installed, and I usually don't have the time to do a proper review, but I felt it necessary and relevant this time fore sure! As my wife and I reflected on the possible outcome of that undetected and what might have happened to her or one of our own kids, I had to write this.Hope it helps someone.Kind RegardsBigRegCurrently have this set up tending batteries out of the boat for the winter. Noticed it went though a recoup cycle when first connected. My other trickle charger is not sufficient for deep cycle batteries that need at least 10amp to charge properly. It took 2 days to condition the batteries and now it’s in maintenance mode. No complaints yet and looking forward to getting installed in the boat in the spring. Can already tell it’s a well constructed unit. Cables have a nice heavy insulation on them that is not brittle and stiff. This should do the trick for many years to come. Will update if I find anything different when installed in the boat.Used one of these as a replacement in a marine diesel installation. Its been in service over two years continuously with no issues. This is a true balanced charger with an individual pair of leads for each 12VDC battery so if you have two batteries in series for 24VDC there will be 4 leads from the charger (2 for each battery) rather than just 2 leads across the pair of batteries..Great product! I have hooked this up to my Vanagon to maintain the primary and auxiliary batteries and have no complaints with it's form/function. I can count on this unit to maintain my batteries to their highest capacity and ensure they are always looked after (when plugged in to the main power of course).Only slight downside is that the cables aren't long enough. I placed my unit in a cupboard under the kitchen area and could not run the cables to either of the battery banks without extending them. Aside from this minor gripe, I still give the unit 5 stars.I bought this after having one installed in my boat. It worked so well with it that I ended up wanting the same for my RV. It powers 2 batteries which are different sizes (group 24 and group 27). My existing RV charger is a maintainer instead of a rapid smart charger, and it can take 20-40hrs to charge to full. This is exactly what I needed to have to ensure long life of my batteries and perfect charge every time with no pain of remembering to put them on the old charger which could overcharge my batteries.