Reply to OP I got this charger and was skeptical when first opened it. Turns out that it works fine. It has spring loaded tray that is adjustable for different battery widths. It was a little tricky at first, inserting the battery into the tray with the adjustable contact pins, but after a couple of attempts at inserting the battery carefully, I got the techniqe down OK. I have charged 2 standard batteries so far and they charged fully, with the charging time being about the same as charging the battery with the plug in on board charger. I paid 7$ for mine (AmazonO) ( saw this morning that they are selling it for 1$!!) well worth the money in my opinion.