Diy lights?

[Old1Eye]

I am looking at fitting lights to my eMTB that run off the main battery.

Need to figure out how to wire it in, but first i am figuring out the lights configuration.

I have a 36v system, found a nive 1000lm 10w lamp that takes 9v-42v.
So i should be able to just wire that straight in through a switch right?

I want to also add some rear red led stripes that are 12v, so if i wired them to the front in series, then the front lamp should draw 24v? Making the total to 36v draw.

Or am i missing something?

And of course fuse etc.

Then just need to figure out where to feed the power from.

Do i run it from a plug off of the nattery charging port?

Or solder in a link from the control board some where?

Prefer a none permanent solution as i dont want to void the warranty yet.

 

[Old1Eye]

I am looking at fitting lights to my eMTB that run off the main battery.

Need to figure out how to wire it in, but first i am figuring out the lights configuration.

I have a 36v system, found a nive 1000lm 10w lamp that takes 9v-42v.
So i should be able to just wire that straight in through a switch right?

I want to also add some rear red led stripes that are 12v, so if i wired them to the front in series, then the front lamp should draw 24v? Making the total to 36v draw.

Or am i missing something?

And of course fuse etc.

Then just need to figure out where to feed the power from.

Do i run it from a plug off of the nattery charging port?

Or solder in a link from the control board some where?

Prefer a none permanent solution as i dont want to void the warranty yet.

 

[Deleted member 4366]

The charge socket is not really supposed to be used for discharge because it probably doesn't have low voltage protection; however, you should be OK as long as you don't use the lights after the power has cut-off for the motor when the battery runs down.

Some batteries share the switching systen for the charge and discharge, so you could find that your lighrs suddenly go off when your motor cuts.

Personally, I think batery lights are a much better option. That's the ones with a rechargeable lithiun pack that cost about £17. See the thread on the best headlight. For a rear light, it's hard to beat those ones with the two laser stripes that you get from Ebay for about £2. They run of AAA cells, but they last a long time. Set it to a flashing pattern so that the battery lasts longer.

 

[Old1Eye]

The charge socket is not really supposed to be used for discharge because it probably doesn't have low voltage protection; however, you should be OK as long as you don't use the lights after the power has cut-off for the motor when the battery runs down.

Some batteries share the switching systen for the charge and discharge, so you could find that your lighrs suddenly go off when your motor cuts.

Personally, I think batery lights are a much better option. That's the ones with a rechargeable lithiun pack that cost about £17. See the thread on the best headlight. For a rear light, it's hard to beat those ones with the two laser stripes that you get from Ebay for about £2. They run of AAA cells, but they last a long time. Set it to a flashing pattern so that the battery lasts longer.

Yeah i had that type of lights on my old standard bike last winter (before they got nicked).

Wanted to make a system where i only have to charge the bike and not worry about the rest.

Been riding for over 2 months now and so far never had the motor shut down on me.
I normally recharge it while I'm at work every 2nd day, keeps the battery from going not much under 50%.
Do about 25-30 km before recharge.

 

[Deleted member 4366]

It should be no problem then.

I started with battery lights, then I changed to wired lights, now I'm back to battery lights again because the lights are better.

 

[Nealh]

I have wired fixed lights on my commute/town bike,like you I don't need to bother about charging them. On my other riding out bikes I use rechargeable rear USB lights and the front is one of the ' Best head lights'.
My current fixed lights utilise the lighting wire on the KT controller and combined horn/light switch.
Previously I took the feed from the controller feeds (housed in small triangle frame bag) with a fuse and a simple dc rocker switch mounted on the exterior.
Bangood lights I used had a wider voltage range up to 90v so just wired them in parallel.

 

[spanos]

It should be no problem then.

I started with battery lights, then I changed to wired lights, now I'm back to battery lights again because the lights are better.

Ditto, I have retired my old best headlight which took huge voltages

New best headlight runs off the 4 x 18650 pack (I bought empty case and used decent cells)

 

[Old1Eye]

I have wired fixed lights on my commute/town bike,like you I don't need to bother about charging them. On my other riding out bikes I use rechargeable rear USB lights and the front is one of the ' Best head lights'.
My current fixed lights utilise the lighting wire on the KT controller and combined horn/light switch.
Previously I took the feed from the controller feeds (housed in small triangle frame bag) with a fuse and a simple dc rocker switch mounted on the exterior.
Bangood lights I used had a wider voltage range up to 90v so just wired them in parallel.

How much extra juice do you reckon they drained fom your bikes battery?