> Take a look at the ACS714 for starters

Thanks Denny. I was not aware of that part

I've used their UGN type sensors (isolated clamp meters for
example for large currents) and seen all the Maxim battery
charger monitors you mention

Digikey sell the ACS714 at a tolerable 1-off price. Could add
one to my next order

There's also this no-fuss product

http://www.pololu.com/catalog/product/1185

Joe

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