I have battery-powered hair clippers that charge with a 2.4V 2000mA AC adapter. I'm looking for the best possible way to lighten or eliminate the adapter, as the one that was included is huge and very heavy. Ideas:
Ideal would be if I could use a 2400mA USB charger (i.e. http://amzn.to/2dRxKAz), and somehow make a small converter/plug to step the voltage down from 5V to ~2.4V. That would eliminate the need to travel with a 2nd adapter entirely. Is there a way to do this safely?
A less ideal approach could be to use a universal AC adapter capable of 3V / 1000ma (i.e. http://thd.co/2donCwf). As I understand it rounding up to 3V should be ok, and since it's just charging - not running - supplying 1000ma instead of 2000 would only mean it charges more slowly (which is fine).
Thoughts would be greatly appreciated.
As per a very helpful comment, I believe #1 can be done with a buck converter (i.e. http://ebay.to/2eb2mg9) set to output 2.4V. To its input I would attach a micro usb port (http://ebay.to/2eg52oZ), and to its output I would attach the clippers' charge plug.
I've also read that to make the charger identify the port as a higher-amp 'charge port' (aka to tell it to supply more than 500mA), I should short the 2 data pins together in the micro USB port (reference: http://bit.ly/2dCbGEM). Does all this sound like it would work?