Is a replacement battery for my Worx Lawn Mower in use, has fitted almost exactly, only 3 mm higher than the original battery, only the holder had to correct something. Despite having the same technical data but can not keep up with the performance of the original, which can be seen on the working and charging time. If normal 1 hour shop and then as long mowing, but provides only 50% of this power had the original battery even after the first mowing season! Only in the 2nd year it was getting worse so I changed the battery in front of the 3rd season, I'm curious how long it works. The original replacement battery costs but also 3 times as much!