I've seen some mediocre reviews but I'm very pleased. Still long battery life. Remember to charge it fully and only plug it back in when it runs out of power. L-ion batteries are a whole different beast. Don't leave it on all the time. Many of my previous nickel cadmium dust collectors had to be charged constantly as they got older and then only worked for a few minutes before they ran out of power. So far so good with this new one!