Last summer, I bought an EGO blower and I love it. About 3 months after I bought it the battery charger told me the battery was defective. Just after spring time I bought a new battery and with not even one whole charge, the charger told me the battery (brand new) was defective. So I returned the battery and got another one. Charger after less than 5 minutes charging said battery number 3 was also defective. My guess it is the charger, because there is no way a company would have that bad of quality control on batteries and still be in business. Again I love the output and feel of the leave blower, I just would be able to have a battery charger that will charge my batteries.