Go Back  Bike Forums > Bike Forums > Commuting
Reload this Page >

Off the Shelf Lithium Batteries?

Commuting Bicycle commuting is easier than you think, before you know it, you'll be hooked. Learn the tips, hints, equipment, safety requirements for safely riding your bike to work.

Off the Shelf Lithium Batteries?

Old 11-12-05, 08:31 PM
  #1  
kuan
Twincities MN
Thread Starter
 
kuan's Avatar
 
Join Date: May 2005
Location: Salsa, Cannondale, Surly.
Posts: 2,528
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Off the Shelf Lithium Batteries?

Are they worth the price? Will they perform better in cold weather? The package claims that they last "up to seven times longer" in digital devices.
__________________
www.marrow.org
kuan is offline  
Old 11-12-05, 08:52 PM
  #2  
steveknight
Senior Member
 
Join Date: Mar 2004
Location: portland or
Posts: 1,888
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
they are the best for blinies. A because they have a flatter voltage drop so you have a brighter blinky till they die. the cold weathter thing is true but we are talking really cold weater below freezing.
steveknight is offline  
Old 11-12-05, 08:59 PM
  #3  
kuan
Twincities MN
Thread Starter
 
kuan's Avatar
 
Join Date: May 2005
Location: Salsa, Cannondale, Surly.
Posts: 2,528
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by steveknight
they are the best for blinies. A because they have a flatter voltage drop so you have a brighter blinky till they die. the cold weathter thing is true but we are talking really cold weater below freezing.
I live in Minnesota. I paid almost $10 for a set of four lithium batteries. I'm actually using them in a Petzl Myo headlamp which I use for running, and when the snow falls, skiing. Just wondering if they will get me seven times more runtime than the 45 minutes I will get with alkalines in freezing weather.

And another question for you folks: If cold kills batteries, why are you supposed to store them in the fridge?
__________________
www.marrow.org
kuan is offline  
Old 11-12-05, 09:03 PM
  #4  
steveknight
Senior Member
 
Join Date: Mar 2004
Location: portland or
Posts: 1,888
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by kuan
I live in Minnesota. I paid almost $10 for a set of four lithium batteries. I'm actually using them in a Petzl Myo headlamp which I use for running, and when the snow falls, skiing. Just wondering if they will get me seven times more runtime than the 45 minutes I will get with alkalines in freezing weather.

And another question for you folks: If cold kills batteries, why are you supposed to store them in the fridge?
you wil a longer runtime but not 7 times. that compared to a standard battery in a high drain digital camera or such. that was a long tiem ago and who knows if it was valid then. anymore it is not valid.
steveknight is offline  
Old 11-12-05, 10:58 PM
  #5  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,531

Bikes: 2 many

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 989 Post(s)
Liked 12 Times in 10 Posts
slvoid bought a box of Lithium AA's from ebay. I think the unit cost was down to about a dollar. He may have bought a box of 20.

The cold stops the battery from working. When the battery gets warm again they work again.
2manybikes is offline  
Old 11-13-05, 12:11 AM
  #6  
steveknight
Senior Member
 
Join Date: Mar 2004
Location: portland or
Posts: 1,888
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
looking on ebay the price is only slightly less then locally. they are about 2.5 each locally and range from 1.5 to 1.75 and above on ebay when you include shipping.
steveknight is offline  
Old 11-13-05, 12:39 PM
  #7  
ItsJustMe
Seņior Member
 
ItsJustMe's Avatar
 
Join Date: Sep 2005
Location: Michigan
Posts: 13,776

Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 441 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by kuan
If cold kills batteries, why are you supposed to store them in the fridge?
Cold doesn't kill them, it slows the chemical process by which they discharge. Those reactions take place at all times whether you're using them or not, though at a low level.

STORING them in the fridge makes their shelf life longer, because the chemical reactions which slowly make them die on the shelf are slowed down. USING them in the fridge doesn't work so well, because the same chemical processes are slowed down.

With apologies to Animaniacs:
Good idea: storing food in the freezer.
Bad idea: Crawling into the fridge and gnawing on a frozen drumstick.
ItsJustMe is offline  
Old 11-13-05, 01:38 PM
  #8  
markf
Senior Member
 
Join Date: Sep 2004
Location: Wheat Ridge, CO
Posts: 1,076

Bikes: '93 Bridgestone MB-3, '88 Marinoni road bike, '00 Marinoni Piuma, '01 Riv A/R

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by kuan
Are they worth the price? Will they perform better in cold weather? The package claims that they last "up to seven times longer" in digital devices.
I don't expect mine to last seven times longer on my blinky lights, but they do seem to last a good bit longer than alkaline batteries in cold weather. I've seen data showing that alkaline cells start to lose power and battery life at temperatures below 70 deg F, while lithium cells lose no power or battery life as the temperature drops, even to well below freezing.
markf is offline  
Old 11-13-05, 02:39 PM
  #9  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Originally Posted by steveknight
looking on ebay the price is only slightly less then locally. they are about 2.5 each locally and range from 1.5 to 1.75 and above on ebay when you include shipping.
Not sure what you mean by slightly.
$2.50 per cell down to $1.25 per cell is 50% less...
slvoid is offline  
Old 11-13-05, 02:44 PM
  #10  
slvoid
2-Cyl, 1/2 HP @ 90 RPM
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Posts: 15,762

Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time in 1 Post
The reason why lithium works better in high drain devices (which your blinker is not) is that they maintain a high voltage even with severely high drains while an alkaline battery will drop to a very low voltage with high drain and permaturely cause your device to think the battery's dead even though it might have 75% of the capacity left in it.
Petzel lists one of their camping headlamps as having 7.5 hours of battery life at 70F and 2.5 hours at 0F.
slvoid is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright Š 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.