I'm a bit leary of Sshumakers, thei'r quality hasn't een very good tha last few years. Especially since they stopped manufacture at the Hoopston plant. They supply our chargers, seems that we warrantee out as many as we sell, they just up and stop putting out the proper voltage.
I recently got a Battery Tender + (well, it's a "Blue Point" from the Snap-On dealer), I'm pleased with it so far, although it hasn't got my Optima fully charged yet. I suspect a problem with the battery itself, though, as it got very deeply discharged.
