Batteries/lighting questions

  • Thread starter DocToxyn
  • Start date

DocToxyn

Science Advisor
424
0
Disclaimer: Forgive me if I phrase these questions poorly, I'm new to electronics.

I am looking into a lighting system for my bicycle which would include something along the lines of a dual halogen bulb set-up powered by either a NiMh (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7180509374&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1 [Broken]) battery pack. Besides the weight issue, the Li ion is about half the weight, are there any other advantages (or disadvantages) to the Li ion pack?

Also, I would like to include some LEDs on the bike as "running lights" to enable cars to see me better at night. The manufacturer of the Li ion battery states that other light systems should not be used with that particular set-up, but does nont make this claim for NiMh kits that they sell. I think Li ion batteries have a greater chance of explosion is used improperly, would this be a possibility if I powered maybe http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4573369618&sspagename=STRK%3AMEWA%3AIT [Broken] along with the halogen bulbs? The LEDs are rated for use between 6 and 18 V and are pre-wired with resistors and 26g wire, so I think they should work. If they would indeed work, what would be the best way to hook them in with the existing lighting unit? If I haven't provided enough info, please let me know. Thanks.
 
Last edited by a moderator:
The danger of exploding Li ion batteries from what I've read comes from recharging them with improper chargers. You'll need to look for a charger that says it's specifically for Li ion batteries or battery packs. The only other way I'd see them burning up is by drawing so much current accross them that it's the equivelent of a dead short (but that would pretty much burn up any battery).
 

dlgoff

Science Advisor
Gold Member
3,706
1,585
"...I would like to include some LEDs on the bike as "running lights" to enable cars to see me better at night..."

I looked at the LEDs on your ebay link. I think you should consider something else. In order to use them as "running LIghts" you need some kind of lensing to spread their beams a little.
 

Related Threads for: Batteries/lighting questions

Replies
12
Views
933
  • Posted
Replies
1
Views
3K
Replies
7
Views
3K
  • Posted
2
Replies
27
Views
4K
  • Posted
Replies
3
Views
1K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top