If you're planning to get that to get into the ryobi 18v system, the supplied battery is hopeless on the drills etc, it will turn OK but just stops when the going gets hard. The charger is super slow and the weed whacker uses annoying cartridges and isnt a bump feed.

But still a good deal for line trimmer. Standard Ryobi line trimmer with no battery is $147.

I bought that one and a drill kit with two batteries. I just use the battery till it goes flat then swap for the other one from the drill.

Line feed is annoying but still heaps faster than lugging power lead around section.