Temp and battery output
#1
Member
Thread Starter
Join Date: Jun 2006
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Temp and battery output
Wondering if some of you would give an opinion.
Just picked up a new Sigma Evo Pro 15 watt halogen twin bulb set set. Listed as battery time of 8 hours. I left home this morning fully charged....temp was 36 degrees. Within 40 minutes, both lights were showing need for recharging and noticably fading in output.
Is this a temp effect on battery? My buddy says batteries store charge better in cold but have less reserve capacity. Am I all mixed up with my terminology?
Do any of you see this in the cold?
Thanks
Just picked up a new Sigma Evo Pro 15 watt halogen twin bulb set set. Listed as battery time of 8 hours. I left home this morning fully charged....temp was 36 degrees. Within 40 minutes, both lights were showing need for recharging and noticably fading in output.
Is this a temp effect on battery? My buddy says batteries store charge better in cold but have less reserve capacity. Am I all mixed up with my terminology?
Do any of you see this in the cold?
Thanks
#2
Banned
Join Date: Nov 2004
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I have the same light and the battery life is a bit over 2 hours with the Ni-Pac battery usign both lights on high.
Nowhere on the box, in the documentation, or on the website, does it list an 8 hour battery life. Where did you get that from, the retailer?
I've used the light in temps down to -32c and have been able to complete a 2 hour commute.
The battery will need to be charged a few times to achieve it's full runtime. Also, the battery indicators on the lamp heads are very conservative, you should have more battery life than they tell you.
All in all I think it's a great light for the money.
Nowhere on the box, in the documentation, or on the website, does it list an 8 hour battery life. Where did you get that from, the retailer?
I've used the light in temps down to -32c and have been able to complete a 2 hour commute.
The battery will need to be charged a few times to achieve it's full runtime. Also, the battery indicators on the lamp heads are very conservative, you should have more battery life than they tell you.
All in all I think it's a great light for the money.
#3
Senior Member
Join Date: Jul 2006
Posts: 2,418
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I have the same light and the battery life is a bit over 2 hours with the Ni-Pac battery usign both lights on high.
Nowhere on the box, in the documentation, or on the website, does it list an 8 hour battery life. Where did you get that from, the retailer?
I've used the light in temps down to -32c and have been able to complete a 2 hour commute.
The battery will need to be charged a few times to achieve it's full runtime. Also, the battery indicators on the lamp heads are very conservative, you should have more battery life than they tell you.
All in all I think it's a great light for the money.
Nowhere on the box, in the documentation, or on the website, does it list an 8 hour battery life. Where did you get that from, the retailer?
I've used the light in temps down to -32c and have been able to complete a 2 hour commute.
The battery will need to be charged a few times to achieve it's full runtime. Also, the battery indicators on the lamp heads are very conservative, you should have more battery life than they tell you.
All in all I think it's a great light for the money.
#4
Member
Thread Starter
Join Date: Jun 2006
Posts: 46
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
my source for battery run times....yes the retailer. Yes, that was the batteries first charge. Tonight the second trip home with it.....I guess I'll compare after a few chargings.
cold run time vs. warm run time.....yes, thats the type of info I'm interested in. Is there such a thing?....a "battery warmer"? Or is this all just hocus pocus?
cold run time vs. warm run time.....yes, thats the type of info I'm interested in. Is there such a thing?....a "battery warmer"? Or is this all just hocus pocus?
#5
Banned
Join Date: Nov 2004
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
my source for battery run times....yes the retailer. Yes, that was the batteries first charge. Tonight the second trip home with it.....I guess I'll compare after a few chargings.
cold run time vs. warm run time.....yes, thats the type of info I'm interested in. Is there such a thing?....a "battery warmer"? Or is this all just hocus pocus?
cold run time vs. warm run time.....yes, thats the type of info I'm interested in. Is there such a thing?....a "battery warmer"? Or is this all just hocus pocus?
No, it's not hocus pocus, batteries do lose capacity rather quickly in the cold. I keep mine in my jacket pocket.
#6
Senior Member
Join Date: Feb 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
cold affects different batteries different ways.
NiCd, cold kills them dead
Lead acid, not so much
NiMH, near impervious to cold, [but when they are old, they are affected]
Li, very cold proof. they used them on the moon at minus 200 deg because they keep working
NiCd, cold kills them dead
Lead acid, not so much
NiMH, near impervious to cold, [but when they are old, they are affected]
Li, very cold proof. they used them on the moon at minus 200 deg because they keep working
#7
Mad bike riding scientist
Join Date: Nov 2004
Location: Denver, CO
Posts: 27,380
Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
Mentioned: 152 Post(s)
Tagged: 1 Thread(s)
Quoted: 6227 Post(s)
Liked 4,230 Times
in
2,373 Posts
Sorry but you are incorrect. Operational temperature of NiCd is -40C to 60 C, NiMH, Li-ion and lead operate from -20C to 60C, Li-ion polymer operate from 0 to 60C.
__________________
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
#9
Mad bike riding scientist
Join Date: Nov 2004
Location: Denver, CO
Posts: 27,380
Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
Mentioned: 152 Post(s)
Tagged: 1 Thread(s)
Quoted: 6227 Post(s)
Liked 4,230 Times
in
2,373 Posts
You don't have to be unpleasant. I've used NiCd for years in the cold without issue. There was probably something wrong with the battery that was unrelated to the cold.
__________________
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
#10
Senior Member
Join Date: Feb 2006
Posts: 1,564
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I don't mean to be a dick, but sometimes I am. maybe my batteries were suspect. I ride all winter long and know what runs the longest for me, before they croak. I ride below zero F on 4 hour missions with big lights.