Football gamesIt's a little difficult for me to rate this product, I only used it on cold winter nights as the battery I got from AAA wouldn't work on such mornings. Of course, my Acura is 16 years old, it's not too surprising that the basic battery specs for it when it was new don't work now. I eventually just got the best battery I could find, an XSPower, and that solved things. I have no idea if this charger works well as a long-term "trickle charger" for a season or three. I don't know if it works for an old, drained battery, the one from AAA was less than a year old, it was just too weak for an old car. I'm trying to decide whether to use the replaced battery with a solar panel, or emergency back-up. I do know when my fairly new car battery wasn't lasting during this COVID time when I was only using the car once or twice a week, this charger worked well to revive and prevent it from dying. Maybe that's faint praise, but it's the reason I bought this and the only use I had for it.I like the fact that I could wire the leads to my car's battery terminals, and connect to the charger with a small plug.And it is charging my battery the way that it is supposed to.However, the LEDs are confusing, especially the "work error" light, which glows full time--in spite of the fact that the charger seems to working perfectly.And there is no mention of a "work error" light in the product manual.Before you spend the money on a new battery, buy this. I wish I had. This maintainer will not only FULLY charge all your 12V batteries but will also REPAIR your batteries so that they work better than ever. Loaned it to a friend before he changed out his Jeeps batteries, charged about 12 hours per battery and he's back on the road. Saved him almost $200.Good tool. Quickly & Safely charges the battery on my riding mower. Easy to use and seems to be well made. I recommend.It works as it should. It charge and keep my motorcycle battery around 13v. The led design is kind of confusing, but you can heard the fan is going on and off. Pretty good 2 in 1 charger/Maintainer for the value, wish the display tell you more about the LED flashing pattern means.Doesn't always work I know the battery of my motorcycles good but it won't detect the battery my other maintainer detect it fineworks great and so far no issues