Hello,

This is just a quick note for those developing battery operated devices.

I have been playing with battery powered dev kits for some time now and I always had issues testing how much current was being drawn from the battery.
Most good multi-meters can measure  μAmps but are usually only accurate to about 50 μAmps or so and with devices like McThings, Ibeacons etc claiming sub 2 μAmps in sleep mode even a very good multi-meter doesn't cut it.

A while back I came across this kickstarter campaign called  μCurrent Gold which is a device that is accurately reads how many amps being pulled from the battery and outputs the reading in μVolts which multi-meters can read more accurately. The device is accurate down to nAmps.

I know the McDev board has some power measurement capabilities but until mine arrives and I do some testing I tell how accurate it is or how low it goes.

I should note I am not affiliated with this person other then being a happy customer, here is the link https://www.eevblog.com/product/ucurrentgold/

Happy developing.