12 Volt Battery Charger 12V 24V 12A Automotive Smart Car Deep Cycle Battery Chargers Maintainer Intelligent Pulse Repair for Boat Marine Truck Lawn Mower with Terminal Clean Brush

Works as described. Very useful during cold winter days when not driving for several days.

Easy to understand operation. Automatic mode takes the guess work out of connecting it to your car battery. I like the display showing what my voltage and amperage is as it is charging.Works very well

Not really happy with this when my battery was completely dead. It did not register. The battery was even there. I had to pull it by connecting a 9 V battery to it to make it thing through the battery there before I could get it to work to charge my battery For my automobile

This is my second one (have the original for years & still being used !Although people have had problems with:A) Display (unplug when not being used and never push on the actual screenB) Fan (many complain of fan). I have same problem & since replaced both units with a “60 x 60 x 25 mm double ball bearing fan.You shouldn’t have to do this but even years later the company has not made that change.Either way this “el cheapo” charger continues to work both for charging as well as trickle charging.No speed demon but like the energizer it just keeps working !

I purchased this charger to charge both the 12 volt and 24 volt systems in my new boat. When hooked up to either the 12 or 24 volt system it automatically detects and displays which system it's hooked up to. It also tells the charge status of the batteries. It also then tells the amperage it is charging at which eventually goes down as the battery is being charged. When the battery is fully charged, the charger automatically goes into a maintainer mode but at that point I go ahead and unplug it, just so I don't wear out the fan, because the instructions say the fan must always be running when charging. A lot of products I've owned over the years the first thing that goes bad is the fan so I'm just trying to save the fan. The charger description said that the charger also repaired batteries, which I found out to be soooo true. My riding lawn mower battery had basically gone bad and I had to charge it every time I used it and the next day it would be dead again. I decided to try this new charger on that battery and sure enough, it seems to have rejuvenated it because it now holds a charge for several weeks. This charger actually paid for itself right away because now I don't have to purchase a new lawnmower battery this Spring which would cost more than the charger cost. The short cables don't bother me a bit either, I just put the charger on a milk crate allowing me to see all the lights so I can tell what it's doing. This product is so inexpensive I don't know how long it will last but all I have to say is I'm extremely happy with it right now.

Charges 12 or 24 volts. Has recovered several batteries. Has an auto or manual switch. Displays amps during charging, which makes it easy to tell if the battery is dead (if its still at several amps a day later, or below 12.6v, it's dead).Case is pretty open and the fan makes noise. Inside my marine environment boat it hasn't rusted or failed yet. I wouldn't leave this outside in rain or dew.

When I would connect this to an undercharged battery, with it set to automatic charge, after about 1.5 hours, it would show my battery charged to about 64% of it's capacity. When I switched it to manual charge, it would show that capacity at about 40%. It did that on several undercharged batteries.So I tried it on the batteries in my vehicles that I knew were working properly and properly charged. Again, it gave two different readings when on automatic and manual charge with that variation being pretty large instead of just a few percentage points.The instructions are poorly written and only cover very bare basics. It does not cover what the readings mean.

Works great