Bests & Worsts Reviews from Amazon

I bought this charger/maintainer as a cheap way to charge and maintain a car/truck battery that I seldom use. On the decription page on Amazon, there is a table that clearly shows that a 12v 550 to 1000 cold crank amps car/truck battery will take 24 1/2 to 46 1/4 hours to charge. Sounds good to me. I get the battery charger maintainer today. Hook it up as shown in the intructions, everything seems to be working great. I read the instructions further and discover that same table in the booklet, only QUITE different in some respects. The instuction manual table now says that such batteries should only be MAINTAINED by this charger. In fact it says almost all batteries in the table should not be charged with this device except the motorcycle and garden tractor, etc batteries. Reading further the instruction manual says, and I quote: "The Schumacher SEM-1562A is a battery maintaniner, and maintains both 6 and 12 volt batteires, keeping them at full charge. It can charge small batteries and maintain both small and large batteries. If you are maintaining a fully charged large battery, you will be properly utilizing the battery charger. However, if you use the battery charger to charge a large battery, such as a marine deep cycle battery, that was not fully charged, you may lose some of the battery's capacity. This would cause the large battery to be unable to hold a charge and become useless. Therefore, we do not recommend charging a large battery with this unit." Quite different than the description on Amazon, and apparently so different that it could easily lead consumers to buy this product and DAMAGE their expensive battery. I'm contacting Amazon shortly for a full refund.