Hoping some of your electric technical wizards can help me out here.

I'm now on my 3rd Shumacher charger with microprocessor, maintainer mode, etc. These things are just not lasting for me! I don't think I'm using them hard at all. I don't leave these on constantly or anything. Are the newer models just not made to last? I'm getting tired of buying new chargers every other year or so!

My current model SE50 which has 3 charge rates. When I plug in the charger is does the initial light flash like it should then when I select any charge rate it clicks, the "charging" light comes on for about 5 seconds but you can NOT hear the "hum" like it does when it is truly charging. Then you hear the same click and it all shuts off. I cut and reattached the alligator clips already. I've tried every setting. It did this once before last year and then worked again as normal several times.

Is there anything simple I can might try to get this charger to work? Anything I can test that is simple?

Pretty frustrated. As far as I'm concerned the advanced tech in these chargers pales in comparison to the reliability of the simple one I bought 20+ years ago that is still going strong!