USB Charger port for bike

USB Charger port for bike

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Discussion

Spanglepants

Original Poster:

1,743 posts

137 months

Thursday 23rd February 2017
quotequote all
I'm after a USB charger port for my bike but remember reading they needed to be wired in a certain way so they only charged when the bike was running.
Can anyone confirm and say how it needs to be wired? I'm hopeless at anything electrical and maybe which one I should go for. I've looked but no idea, thanks

bogie

16,384 posts

272 months

Thursday 23rd February 2017
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Many modern bikes have an accessory line these daysfor adding such things, check the workshop manual. I bought a kit of Amazon for under £20 to add a USB line to my Harley to charge phone/nav when touring.

Birky_41

4,289 posts

184 months

Thursday 23rd February 2017
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What bike is it? As said some have an aux power unit. Mine does behind the dash so a £5 cable from ebay and a small hole cut in the dash to fit the USB is all it took

My previous bike didnt so I ran it from the battery and had a small on/off box/switch that allowed me to run when I needed ignition on or off

The cable ran upto the clutch cable and had a small rubber holder when not in use so you'd never see it there. Id use it for my satnav or phone and it worked brilliant. Cost me about £30 again ebay

wilbo83

1,535 posts

165 months

Thursday 23rd February 2017
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If you have an optimate charger, they do a USB charger that plugs into the SAE connector. Being an optimate product, it has technology built in that won't let the battery run down, which my previous USB charger didn't as it had a blue LED which was always on. Have only just purchased the optimate one but my plan is to leave it under the seat so I can charge things in there whilst riding the bike, or run a cable up to the sat nav if needed on long journeys. I think its the Optimate 0100 but you need the optimate lead too, which I believe is Optimate SAE71.

black-k1

11,924 posts

229 months

Thursday 23rd February 2017
quotequote all
What's the issue with it being live all the time? I have a power take off socket that I've wired directly from the battery (via a fuse) thus is live all the time. It's never been an issue and means anything running from it continues to receive power even when I stop for petrol etc.

Spanglepants

Original Poster:

1,743 posts

137 months

Thursday 23rd February 2017
quotequote all
Ok thanks, bike is Kawasaki ZRX 1200. I don't have an Optimate. Are those ones on Amazon on Ebay all roughly the same but its just how you wire them that makes the difference?
Do i wire it from the battery or from ,say, the little light above the headlight for example?


Birky_41

4,289 posts

184 months

Thursday 23rd February 2017
quotequote all
Spanglepants said:
Ok thanks, bike is Kawasaki ZRX 1200. I don't have an Optimate. Are those ones on Amazon on Ebay all roughly the same but its just how you wire them that makes the difference?
Do i wire it from the battery or from ,say, the little light above the headlight for example?

Thats upto you. Mine was to the battery and a switch to turn on or off whether bike was on or off and it worked great

You could tap into a brake light or similar so it runs on ignition though

BobSaunders

3,033 posts

155 months

Thursday 23rd February 2017
quotequote all
http://optimate.co.uk/o-101.htm

http://optimate.co.uk/tm71.htm

The upside of this solution is that if the battery discharges down to 12v then it cuts the connection.

A USB will always draw power unless switched - but it is minimal.. especially if you hook up the bike to the mains after every trip.

Threading the cable from the battery to the headstock will be the biggest faff.

Spanglepants

Original Poster:

1,743 posts

137 months

Thursday 23rd February 2017
quotequote all
Looks good, but the bit about hooking it up to the mains puts me off. I wouldn't be doing that. Is it necessary ?

BobSaunders said:
http://optimate.co.uk/o-101.htm

http://optimate.co.uk/tm71.htm

The upside of this solution is that if the battery discharges down to 12v then it cuts the connection.

A USB will always draw power unless switched - but it is minimal.. especially if you hook up the bike to the mains after every trip.

Threading the cable from the battery to the headstock will be the biggest faff.

BobSaunders

3,033 posts

155 months

Friday 24th February 2017
quotequote all
Spanglepants said:
Looks good, but the bit about hooking it up to the mains puts me off. I wouldn't be doing that. Is it necessary ?

BobSaunders said:
http://optimate.co.uk/o-101.htm

http://optimate.co.uk/tm71.htm

The upside of this solution is that if the battery discharges down to 12v then it cuts the connection.

A USB will always draw power unless switched - but it is minimal.. especially if you hook up the bike to the mains after every trip.

Threading the cable from the battery to the headstock will be the biggest faff.
I hook mine to the mains to keep the battery topped off - i do not run it day to day - it's a summer toy.

To be clear, i have no installed the USB yet - it appears there is mixed reviews on it... some recommend the 12v cig lighter solution over the USB solution.

Prof Prolapse

16,160 posts

190 months

Friday 24th February 2017
quotequote all
black-k1 said:
What's the issue with it being live all the time? I have a power take off socket that I've wired directly from the battery (via a fuse) thus is live all the time. It's never been an issue and means anything running from it continues to receive power even when I stop for petrol etc.
It doesn't make any odds unless you leave it plugged, and switched on, for many hours, without the engine running.

When I wired mine I just used an old car 12v cigarette lighter socket, and then my sat nav's existing wiring and 12v plug. Cost nothing and took about 10 minutes. This is because I was being lazy however, the switchable live is the best way to do it.

More of an issue for things like heated grips in my opinion.







toxgobbler

2,903 posts

191 months

Friday 24th February 2017
quotequote all
Or fit a relay? Can be picked up for buttons.

bogie

16,384 posts

272 months

Friday 24th February 2017
quotequote all
Ive got one of the other style Optimate lead converters on my other bike, it works fine too. I dont use it daily, just on the odd occasion I need to charge my phone/nav when out on longer journeys. If you already have the optimate charge lead fitted to your bike, then £15 for the adapter is an easy plug in solution

creampuff

6,511 posts

143 months

Friday 24th February 2017
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You want a Pan European, mate. Not only does it come standard with a 12V socket, it comes with carpet in the top box.

Spanglepants

Original Poster:

1,743 posts

137 months

Monday 24th April 2017
quotequote all
Finally getting round to this. The lead arrived today and its just a straight connection to the battery. If I get a relay i assume its just wired inline?
What relay would be suitable ( remember i know NOTHING about electrics )
Thanks

Mr2Mike

20,143 posts

255 months

Monday 24th April 2017
quotequote all
toxgobbler said:
Or fit a relay? Can be picked up for buttons.
A relay just increases complexity, more wiring for no real benefit. A USB charger is going to draw somewhat less than 1 amp even with a 2 amp USB device connected and the main switched ignition wire should be more than capable of this tiny extra load. It's really not rocket science, you just need to find the main switched ignition wire and splice into it, ensuring you use a fuse on the new wiring.

Private Pile

754 posts

195 months

Monday 24th April 2017
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Cracking bike OP

Spanglepants

Original Poster:

1,743 posts

137 months

Tuesday 25th April 2017
quotequote all
I'd like do that but wouldn't know where to begin looking for an ignition live wire?

Mr2Mike said:
A relay just increases complexity, more wiring for no real benefit. A USB charger is going to draw somewhat less than 1 amp even with a 2 amp USB device connected and the main switched ignition wire should be more than capable of this tiny extra load. It's really not rocket science, you just need to find the main switched ignition wire and splice into it, ensuring you use a fuse on the new wiring.

Spanglepants

Original Poster:

1,743 posts

137 months

Tuesday 25th April 2017
quotequote all
Thanks, it's different - i cant get on with sports bikes any longer, getting to that age of aching shoulders and wrists😁



Private Pile said:
Cracking bike OP