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Released with the Apple Watch in the UK / HK, the new folding plug has pins that fold completely flush for travel.
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Matches the older style plug with a 5W / 1A specification.
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AC 100 - 240V input.
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Becoming more common on mains chargers, most of the design is fastened together during the moulding process. There is only a single screw (Torx T9 M2.5 x 2.75mm) in the entire product.
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You could possibly pry this open, but you would likely make a big mess. Instead this has been cut in two using a fine bladed coping saw.
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This was cut 1mm behind the USB port entrance.
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Inside we can see the design has been split into two halves.
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All of the electronics are on a single PCB on the left.
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All of the mechanism and high voltage contacts are on the right hidden under plastic hood.
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A break down of the top side of the PCB:
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Rubycon 4.7µF 400V electrolytic capacitor 400AX4.7M8X9
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Fairchild bridge rectifier MB10S
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Everlight optoisolator EL3H7-G
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Transformer markings 157-00003 / HIG J 1503
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On the reverse side:
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Fairchild PWM Controller FAN301
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Fairchild N-Channel MOSFET STD7NM64N
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Recessed inductor markings T00405 SP451
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KEMET Tantalum Polymer Capacitor T520M157M006ATE035
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Diode SBR8U60P5
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There's a blob of resin over R9 - a mistake?
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Most of the mechanism is covered with a hood, fixed at points using thermoplastic staking during production.
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The only way to remove the cover is to cut the tops off these.
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Finally we can see how the mechanism works!
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The yellow tape is Polyimide high temperature film.
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The cover is needed for the mechanism to work properly - the central black plastic piece will lift otherwise.
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With the side of the bottom section filed away, you can see the stackup of the PCB, mechanism and contacts exposed.
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The Apple folding charger repairability Score: 1 out of 10 (10 is easiest to repair)
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Almost everything is moulded together during manufacture, making it impossible to take apart without damage.
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A short render of the mechanism showing how it works, contributed by Thang010146 on YouTube
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