Battery Tender 022-0157-1 Waterproof 12 Volt Power Tender Plus Battery Charger

• Fully mountable
• Vibration resistant
• Steel casing for extra strength and works at 5 ampere
• Completely safe SC and RP protected
• 2 year warranty

I have many different vehicles and pieces of motorized equipment. Everything from a 50 ft long motor home with 4 engine starting batteries, to four Harley Davidson motorcycles. The common thread is that they all sit for extended periods of time, and they all have expensive batteries. I have tried all of the different battery maintainers I could find and I still keep coming back to Battery Tender. Aside from the terrific reliability, (not true for other maintainers), the best feature for me is the fact that all you do is plug the Battery Tender in and forget about it. Everything is automatic....this is important if the power fails. Other Battery Maintainers require that one push buttons to set certain parameters. The unfortunate side effect is that the charger will not work without the afore mentioned "button pushing" and your battery may be dead when you need it. Stick with Battery Tender!

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Battery Tender Plus 022-0157-1 received as described. It is a compact size in a heavy duty, weatherproof case which makes it great for outdoor applications such as charging batteries on a travel trailer. Very easy to use...just plug it in and walk away. Consider getting extra wiring harnesses for other charging applications. Harnesses make it easy to plug in and charge batteries without having to hook up bulky clamps and cables. Would recommend.

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This is a great product for protecting your batteries. I have used it for years on my TransAm, which I rarely drive, and my motorcycle. Motorcycle batteries usually last 4 6 years. My last one lasted 9 years. I have a friend who has a Z which he rarely drives; and during the time I had one battery on my TransAm he replaced his 3 times. After suggesting he get one of these 3 or 4 times with no success I finally bought him one myself.

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Amazon's dimension specs for this say that it is almost double the size that it is. The actual correct dimensions are 5.2" L x 5.0" W x 2.0" H. The weight appears to be correct. This error can make a BIG difference if you are planning out the space for it before it arrives.

As far as the product itself goes, nothing but positive things to say. I know several people who use these regularly as well for classic cars that sit in storage and they all rave about them as well. I have been using to charge a marine deep cycle battery that I use to power a power-box for my telescope and equipment. It has worked perfectly and does an excellent job charging and keeping a charge on this when not in use.

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I've used Deltran chargers before and they've always been a solid product. However, the discrepancies between their marketing literature and their instruction booklet, and the general way the instruction booklet is written, means that I can only give them a 4 star rating. Their website states, "any capacity lead acid battery." While the instruction booklet states "designed for six-cell. . . 1.2-200Ah," lead acid batteries. Not a big deal for most, but if you're looking for something to charge batteries in parallel (such as in a diesel truck or marine batteries), it would be good to know which info is correct. Which brings me to my next point. There's nothing in the official literature about using this particular charger to charge more than one battery at a time. I can only guess that if the voltage matches and the amps aren't exceeded, it should do just fine. Another issue is that the instructions only give the steps for hooking-up the alligator clips to the battery, however this unit doesn't come with the clips, just the quick-disconnect ring terminals. It would also be beneficial if they matched-up the marketing and instruction booklet technical specs to battery manufacturer specs. So, if the battery manufacturer recommends a max float charge of x, then state what the float charge of the charger is. This is a well built charger and deserves well written literature to go with it.