Unless you’re experienced in micro-electronics work, I would not recommend this. I’m confident that the manufacturer made the adapter so it could not be disassembled by the consumer, for obvious safety reasons. [br]
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A suitable charger and cord can be bought for less than the price of lunch (try Monoprice.com). Safety first, get a reliable charger and cord to suit your purposes and keep the GHM’s adapter for another use. ;)