This is the best 4 amp charger/servicer I can find on the market with alligator clip and loop connection. I currently have an old minivan at home that I don't use often, but when I need to use it I know the battery is probably dead so I have to start the car. Unfortunately, I couldn't find a connector cable anywhere in my garage, which prompted me to do some research and found that there is such a thing as a charger/server. I'm a regular member of Costco and they have an item with the exact same specs that sells for $49. Then I found another unit from Harbor Freight that sells for $38 and ended up with this unit being the cheapest (I stuck with the $22 4AMP with Digital Readings I installed this morning, and so far it is easy to use and works well.
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