Hawk USB port idea.

ben2go · 08-05-2018, 07:55 PM

You need to know that any charging port you put on your bike could have a circuit in it to prevent power surges. All the USB ports have a rectifier regulator to get the voltage down to 5 volts for the USB cable. These run 100% of the time when the bike is off and will drain a battery in as little as 12 hours for some of the really cheap ones. Some of the better ones may take a week or two.

If you want to know if your power port is hot all the time, even when nothing is plugged in and the bike is completely off, wire a small light bulb between the battery positive and the wire that sends power to the port. You can also check between the battery and the positive wire to the port with a multimeter.

I have repaired many bikes with a constantly dead batter by simply installing a fused switch and relay set up for the power port(s).

08-05-2018, 07:55 PM	#1
ben2go Join Date: Jun 2011 Posts: 1,335	You need to know that any charging port you put on your bike could have a circuit in it to prevent power surges. All the USB ports have a rectifier regulator to get the voltage down to 5 volts for the USB cable. These run 100% of the time when the bike is off and will drain a battery in as little as 12 hours for some of the really cheap ones. Some of the better ones may take a week or two. If you want to know if your power port is hot all the time, even when nothing is plugged in and the bike is completely off, wire a small light bulb between the battery positive and the wire that sends power to the port. You can also check between the battery and the positive wire to the port with a multimeter. I have repaired many bikes with a constantly dead batter by simply installing a fused switch and relay set up for the power port(s).
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