USB charging negotiation

PaxInstruments / t400-electronics

Electronics for the Pax Instruments T400 temperature datalogger

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USB charging negotiation #176

Closed charlespax closed 9 years ago

charlespax commented 9 years ago

Is there anything that needs to be done to negotiate the USB charge rate?

samchoy88 commented 9 years ago

It is possible to negotiate with USB host to get 2 Amps current (otherwise only 500mA available). But it also made the charger IC and battery increase temperature rapidly.

charlespax commented 9 years ago

We can only do up to 500 mA. screen shot 2015-08-06 at 18 17 43