Hello everyone!
first post post although I've been browsing for a while and learning from all of you.
I'm working on my first battery light project and I was hoping you'd shed some light (boom boom!) on a few questions I have. So here we go!
i want to build a rear light for my bike modifying 3 existing aaa powered lights to be all powered by two 18650 batteries. The lights are to retain their own individual circuitry and switches. I hate the fiddly aaa batteries and dont want to have to negotiate 6 of them. On top of that I want the whole setup to be fixed to the bike permanently and the standard fittings are very flimsy.
So what I would do is bolt and glue the slightly modified lights to a waterproof junction box, put the batteries inside the box (in appropriate holders) and fix the whole box to the seat post with some kind of theft proof fitting.
As as far as the circuit is concerned, the batteries will be in parallel and the lights in parallel, and a master switch between the two. So, correct me if I'm wrong, 3.7v of the batteries will power the 3v lights. Would this work? Or will the extra voltage damage the lights?
Also, will I need an extra circuit of some kind for the batteries? I plan to buy protected ones, and I have a separate charger. I am a bit worried about them as I've read a lot of horror stories on here!
Is there anything I've missed out?
apologies for the long post, thanks in advance for your help.
Jon
first post post although I've been browsing for a while and learning from all of you.
I'm working on my first battery light project and I was hoping you'd shed some light (boom boom!) on a few questions I have. So here we go!
i want to build a rear light for my bike modifying 3 existing aaa powered lights to be all powered by two 18650 batteries. The lights are to retain their own individual circuitry and switches. I hate the fiddly aaa batteries and dont want to have to negotiate 6 of them. On top of that I want the whole setup to be fixed to the bike permanently and the standard fittings are very flimsy.
So what I would do is bolt and glue the slightly modified lights to a waterproof junction box, put the batteries inside the box (in appropriate holders) and fix the whole box to the seat post with some kind of theft proof fitting.
As as far as the circuit is concerned, the batteries will be in parallel and the lights in parallel, and a master switch between the two. So, correct me if I'm wrong, 3.7v of the batteries will power the 3v lights. Would this work? Or will the extra voltage damage the lights?
Also, will I need an extra circuit of some kind for the batteries? I plan to buy protected ones, and I have a separate charger. I am a bit worried about them as I've read a lot of horror stories on here!
Is there anything I've missed out?
apologies for the long post, thanks in advance for your help.
Jon