I have the B&D 40/20/10/2 also and really like it it was the best $50 I spent when I got it on closeout when Walmart stopped selling them. I use it to charge and maintain my 2 6v GC batteries. Getting back to top charging I suspect the B&D does not fully charge the batteries when it says ful, because when I disconnect the B&D and float at 13.6V with my old Magnatech constant charger for a couple of days I can dry camp for several more days without generator usage. Has anyone else noticed this with the B&D or any other "smart charger"?
