This is the battery to own. Rather than buying several lower amp hour batteries, you can own a couple of these and keep your Greenworks tools running longer between charges. It might be more investment upfront but it also means fewer charges in between and longer running times.
The battery charges quickly. I have used it twice in conjunction with my 5ah battery in my greenworks 60 volt lawnmower. I have the model that switches over to a second battery automatically so i can mow uninterrupted, what a teriffic machine and the batteries work great. I am very happy with it.
I purchased a Greenworks pole chain saw. It is fantastic. The motor is strong enough to cut off the branches of the oak (hard wood) trees in my yard. I would recommend this product. It is a little a wkward to handle because all the weight is on the end of the pole. The weak spot though is the battery. It only lasted for about 8 cutting sessions (about 2 months). Then, all of a sudden it would not take a charge. In reading other reviews, it seems to be a recurring problem. In spite of that I still recommend this product.
The battery works as expected. When paired with a second battery of the same amo hours and voltage, I get over an hour of tough mowing time on my 60V self-propelled mower.