good mention on batteries. they aint cheap, and do not last all that long depending on which tool you are using and how you are using that tool.
i have 8 ryobi 40v batteries. so its no issue. the 6Ah big dog is heavy, but it works well in the push mower which is relatively light. and of course the 6Ah lasts the longest. have 2 x 6Ah, 3 x 4Ah and 3 x 2.6Ah. the 4Ah is the best balance between weight and performance imo. i use the 2.6's and the 4's in the string trimmer.
i have 8 ryobi 40v batteries. so its no issue. the 6Ah big dog is heavy, but it works well in the push mower which is relatively light. and of course the 6Ah lasts the longest. have 2 x 6Ah, 3 x 4Ah and 3 x 2.6Ah. the 4Ah is the best balance between weight and performance imo. i use the 2.6's and the 4's in the string trimmer.