Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

View Poll Results: In the future - which battery source would you choose for a head light
Lithium Ion 8 53.33%
NiMh 1 6.67%
Mix of rechargable and disposable 2 13.33%
Mix of generator and other batteries 4 26.67%
Voters: 15. You may not vote on this poll

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-31-10, 07:00 AM   #1
Richard Cranium
Senior Member
Thread Starter
 
Richard Cranium's Avatar
 
Join Date: Jun 2002
Location: Deep in the Shawnee Forest
Bikes: LeMond - Gunnar
Posts: 2,838
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
The future of battery lighted systems? LI Ion or NiMh

I have a decision to make regarding an upgrade of a lighting system. If you were road cyclist who occasionally wanted to ride a 24 hour ride or ride all night what would would be your choice for a battery supply source? Assume for the sake of the poll that one set of Lithium Ion batteries could last all night, but NiMh batteries would have to be replaced several times.

Extra comments regarding comparison appreciated.
Richard Cranium is offline   Reply With Quote
Old 03-31-10, 08:13 AM   #2
ItsJustMe
Seņior Member
 
ItsJustMe's Avatar
 
Join Date: Sep 2005
Location: Michigan
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Posts: 13,352
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 198 Post(s)
Today, LiIon without a doubt. You can HAVE my old NiMH battery.

For tomorrow, none of the above.

Lithium iron phosphate (LiFePO4). They're a bit hard to find now and a little expensive, but I think they'll get more common. They're already the hacker's choice on eBikes and are used by some high end power tools.

Very high capacity, very long life, almost impossible to abuse to death. Not as subject to runaway overheating / outgassing (fires). Also, non-toxic (LiIon are toxic) and eventually may be cheaper.
__________________
Work: the 8 hours that separates bike rides.
ItsJustMe is offline   Reply With Quote
Old 04-02-10, 12:02 PM   #3
JPMacG
Senior Member
 
Join Date: Dec 2006
Location: Bucks County, PA
Bikes:
Posts: 400
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Li ion and Li polymer cells certainly have much higher energy density than NiMH. However, I still use NiMH (Eneloop), and they serve me well for my hour long night time commutes. I'm just nervous about the tendency that Li batteries have for "venting with flame". I know that many use Li batteries with no problem at all. I just don't trust myself not to absent mindedly do something wrong. Also, I worry that Li cells and chargers tend to come from parts of the world that are not known for their quality control. Once LiFePO4 become less expensive I'll probably go with them.
JPMacG is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:10 PM.