Bests & Worsts Reviews from Amazon

I really wanted to leave a 5 star review for this item but unfortunately, I can't. After only a few uses of charging 4 new 18650 Panasonic batteries this unit began making a loud buzzing sound from the cooling fan. Apparently, the bearing is seizing up. I tried contacting Amazon customer service and of course because it is outside of the "return window" they will only put me in "contact with the manufacturer." Who knows how long this will take or even if I will ever receive satisfactory service. Amazon just informed me they don't have any way to contact the manufacturer for warranty service so they offered a return label and a partial refund. Then they told me that I cannot get a return label.. Now they say I can get a return label but they will deduct $7 from the price upon return. I am sorry I ever bought this piece of junk, it quit after 4 charges costing me about $2/charge. And the manufacturer only has a foreign exchange phone number outside of the United States. So if I want warranty service I will have to call China? Return ship to China? Wait for a replacement from China? I guess the $7 beating by Amazon is not so bad. I will take it. But next time I will look before I buy junk. I am unhappy. Pi $$ on this one. I learned my lesson. Clearly, the product should last longer than a few months.