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The outer box arrived in good condition as well. The internal packaging was also in good condition, so I could be very安心 (at ease). After turning on power, my impression is that it is very good for personal hobby use. (80W version) I am using Makita 18V Battery (BL1860B). A value close to the set output voltage appears on the tester, and thanks to that I can see that the automotive voltmeter also has reasonably good accuracy. If you can prepare Makita 18V Battery, you can use it anywhere, so it should be handy. A little disappointing is Banggood's delivery system. I wish it were a bit faster. I inevitably compare it with AliExpress. For domestic Japan, it was Sagawa Express... I give this part 5 stars.
All according to the product description. Reliable measurement and I hope the power is as promised. Fast shipping!