Sorry I have taken so long to write a review, I have been using the trimmer for two days on and off, I have been using it with a 4ah battery, I found with the straight base I was getting cramp in my thumb, I was just rounding the front of 18mm mdf and cutting a slot to except 1/2'' ply on the under side I found myself putting it down every 2m to give my hand a rest, Then today I hung 13 half hour fire doors using the plunge base and trend jig, wow at this stage I was blown away the on off switch is light years above the old corded one where if I grabbed it the wrong way quickly I have turned it on in the past, the speed settings are great the light I feel is useless, I would recommend it over the corded one if it where only for the safety of the on off switch, I didn't use the dust extraction so I can't comment on it all the work on the MDF was done outdoors, and a mask for hanging the doors I also cant comment on the battery as I am still using the same 4ah, for now the corded one is in retirement.