Glad to find this battery is still available for my 909 cordless power tool set which is very useful. It should be noted that although the original battery was (incorrectly) labelled as a 20V version and this one is labelled (correctly) as 18V, they are both identical. The original 20V labeling was just a marketing gimmick. I haven't had a chance to use it yet and my only concern is that this was probably manufactured some time ago causing the battery to significantly self discharged over time, so I'm hoping that hasn't affected it's useful life or capacity. Time will tell.