Some workmanship checking points for Home Charger/USB Wall Charger inspection:
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1-Metal pin surface is well plated,no indentations, scratch, front, distortion, defects, oxidation, US pin's specifications meet safety requirements.
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2-The surface shell and bottom case‘s ultrasonic welding must be stable any gaps ≤0.15mm, drop test performed without cracking at 6 feet.
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3-No scratches on shell, miscellaneous points, burrs, shrinkage, color is same as requirements, no obvious color differences throughout.
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4-USB is installed correctly, the surface is well plated, no skew, loose plastic flakes, distortation or oxidation.
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5-Pins with shell is well matched, no loose phenomenon
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6-Outside shell and bottom case ultrasonic welding is constant
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7-Shaking the charger does not emit any sounds of loose components.
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8-USB has no difficulty to pull in/out plug
Some testing for Home Charger/USB Wall Charger/Car Charger quality control:
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1-Basic function test- Output voltage/current test/Charging function
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2-Internal check against CDF/CE certificate, and check components quality
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3-Product endurance test(4H)
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4-Tape check on silk- screen/painting/electroplate
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5-Barcode Readability check- on product/package/labels
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6-Hi-Pot test- No flash over and breakdown after test
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7-Unit drop test - 1.2m 6 side Unit should not break
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8-High /low voltage start test
Some workmanship checking points for Car Charger:
