I want to install a cigarette lighter on a motorbike to power a 167w phone charger. Feasible?

[Draisee]

Bike is DC, an older motorbike. Charger will be used to draw no more than 60w. How can I make this work, safely?

 

[KungFuTurkeyLeg]

I assume it has a 12v battery? Just run a lighter socket with some reasonable gauge wire and an inline fuse on the positive lead to somewhere convenient

 

[Draisee]

Yes, 12v. Want to run it through the ignition switch and a relay (turn on ignition, it comes on. Turn it off, it disconnects).


I just want to know if the motorbike will be able to handle all that power without any side effects. Here is the ignition switch circuit diagram.

 

[newfutile]

60 watts is less than 3 amps which is fine with the engine running, is the 167 watts an error?

 

[Draisee]

60 watts is less than 3 amps which is fine with the engine running, is the 167 watts an error?

No it's not actually. This is the car charger I want to use. You say 60 watts is fine. How about 100 watts?

 

[Dan]

Haven't got a clue about the electrics but that homer image is a good one!!

 

[pirate]

Cue old joke:
Are going to fit an ashtray too?

 

[Avo Mk8]

If you are contemplating something like this, I wouldn't!

https://www.amazon.co.uk/Charger-Adapter-MrSEVEN-Charging-Samsung-Black/dp/B0C7N885VR?

It will draw about 12A if you use the 140W USBC PD port for something greedy, and probably flatten your 7Ah battery in around 1/2hour, unless you are driving, in which case it might cause a problem for the charging circuit of your bike?

 

[newfutile]

Im wondering what you could possibly use that power on?