Quote:
Originally Posted by dgbint
I think ( but don't know for sure ) that there's small switch mode power supply within the battery pack.
It probably runs at 10KHz or so, just in the region where humans can hear it.
Under certain load conditions, yes you can hear that 'tune'.
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Glad to know it's normal behavior! Everything looks great with the Segway; both batteries are holding beautifully, showing a full charge on the Infokey - all ready to roll. Now I just need the weather to warm up a bit and we can get out and glide a little!