Can electric motorbike chargers be paralleled?

Can electric motorbike chargers be paralleled? Of course you can charger the electric motorbike in parallel to get a greater current. like in this video, I paralleled my electric motorbike charger viar Q1 for a 17S 71.4 volt 4 amperes li ion battery. I paralleled it to get a voltage of 71.4 volts 8 amperes.
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