Has anyone with the battery tender pigtail tried the battery tender USB adapter? I have used it and it is so nice. It supposedly does not draw on the battery unless you have something plugged into the USB cable. I have left the adapter plugged into my battery tender plug and had no battery issues. I have the battery tender USB adapter tucked in under the seat plugged in and the USB cable run out to a magnetic tank case for cell phone or GPS devices. For under $15 dollars I thought this was a great investment.
Some of the 12 volt kits I have seen draw power when not in use so if you go that route be careful and so research.
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