After I Buy Schumacher SC-200A Speedcharge 2/4 Amp Charger/MaintainerI purchased this unit two months ago, and I have used it twice since then. The first time, I used it to charge my Lincoln, which had a defective battery. I didn't think the problem was with the one and a half year-old battery, but it was. It took all night to charge it, and the battery seemed OK for a few days, but went dead again. I then replaced it.
The second time, I used it to charge my van. I inadvertently left the key in the accessory mode, and, when I discovered it, the battery was as dead, and I mean DEAD. It was as if there were no battery hooked-up at all. To my surprise, the unit charged my van in only a few hours. I expected it to take longer.
I, especially, like the added features: Auto Start (doesn't supply current to the battery clips until a battery is properly connected); offers three connector options; no problem if you mistakenly reverse battery connections; automatically detects and corrects a sulfated battery; and does not need to be monitored - can be left connected practically forever. It automatically switches over to Maintain Mode.
All-in-all, this is a great little unit, and, because of the reasonable price, should be in everyone's garage waiting for that unexpected moment.
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