Charger input waveforms, 0.2A/square, screen edges and centre are the input voltage zero crossings
Green wallwart AD5953 ALF, XO1.5 running 93% charge 240V input
Green wallwart Delta ADP17FBA, XO1.5 running 93% charge 240V input
White wallwart Bestek NA0241WAA, XO1.5 running 93% charge 240V input