This is a great battery for any 60V greenworks blower or string trimmer the battery will work in current 25 and 21 inch mowers but compartment door dosent fully shut. I get a run time of over 50 mins high not using turbo on the blower and about an hour on the string trimmer.The battery is a bit heavy but with a shoulder strap it's not bad. I like how the battery is well constructed and has rubber grips that make pulling the battery from charger and tools much easier the led lights are easy to read. Bluerooth works well and so does over heat and over discharge warning symbol.This is a step up from the current HC battries and is more durable than my other commercial battery equipment from other competitors. I bought this with my own money.
Product works as advertised. I have 3 total batteries: one 60v 5.0ah & two 60v 4.0ah. I am able to cut my entire yard on turbo with the greenworks lawnmower, as well as trim edges with the string trimmer & blow all grass off the driveway & street with the blower.
Superb performance out of my string trimmer, since I made this purchase of the 4ah battery. With my 2ah battery, I had to recharge two times to do my trimming and edging. With the 4ah, I can do my entire yard with 80% charge remaining.