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#1
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"safe" temperatures for lithium batteries?
Hi all,
I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! |
#2
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"safe" temperatures for lithium batteries?
On Mon, 14 Jan 2008 04:16:00 -0800 (PST), 151 wrote
in : I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? For lithium-ion rechargeable batteries: 1. Elevated temperature greatly accelerates the rate at which they experience permanent loss of capacity: http://en.wikipedia.org/wiki/Lithium_ion_battery#Storage_temperature_and_charge 2. High temperatures increase the risk of rupture, ignition or explosion: http://en.wikipedia.org/wiki/Lithium_ion_battery#Controversy Lithium disposable batteries have different chemistry. -- Best regards, John Navas Panasonic DMC-FZ8 (and several others) |
#3
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"safe" temperatures for lithium batteries?
On Mon, 14 Jan 2008 04:16:00 -0800 (PST), 151
wrote: Hi all, I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! Lithium batteries, as opposed to Li-Ion batteries, generally are rated at 185F (85C). I would never expose anything electronic to temperatures above 100F (38C) or direct sunlight just on general principle. |
#4
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"safe" temperatures for lithium batteries?
151 wrote:
Hi all, I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! At those temps, you are quite likely to cause the plastic case to deform. Temps in a car in a warm climate, such as Texas, can quickly rise to 160 F. This is likely to damage batteries, and can easily deform plastic. Add to the ambient temp, the temperature increase from direct sun, and plastic can melt. My brother once got second degree burns from the leather seats in his car when he got in it with shorts on. |
#5
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"safe" temperatures for lithium batteries?
Raoul wrote:
On Mon, 14 Jan 2008 04:16:00 -0800 (PST), 151 wrote: Hi all, I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! Lithium batteries, as opposed to Li-Ion batteries, generally are rated at 185F (85C). I would never expose anything electronic to temperatures above 100F (38C) or direct sunlight just on general principle. 100F? If I didn't expose mine to that temp, I couldn't use it outside during much of the Texas summer! Still, as I mentioned above, leaving a camera in a car can be a problem. |
#6
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"safe" temperatures for lithium batteries?
On Jan 14, 10:58 pm, Raoul wrote:
On Mon, 14 Jan 2008 04:16:00 -0800 (PST), 151 wrote: Hi all, I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! Lithium batteries, as opposed to Li-Ion batteries, generally are rated at 185F (85C). I would never expose anything electronic to temperatures above 100F (38C) or direct sunlight just on general principle. I am guesing its a lithium-ion in my case. The reason I ask is that I left the item near a source of warm air (computer system fan) and it got quite warm to the touch when I finally moved it. I imagine the temperature was not huge however it did get me thinking about the dire warnings in the devices manual! I would have thought that laptop batteries would be exposed to 38C regularly unless taken out when the laptop was plugged in...same with digital cameras under studio lighting perhaps? it would just be nice to have some actual figures for what constitutes a risky temperature for rechareable li-ion batteries... |
#7
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"safe" temperatures for lithium batteries?
On Mon, 14 Jan 2008 04:16:00 -0800, 151 wrote:
Hi all, I have a question about lithium batteries that I suspect you guys might be able to answer since I am sure digital cameras go through quite a bit of rough treatment. Basically, I recently got a device that warned (rather vaugely) about leaving the device (in this case a bluetooth headset) anywhere it might get hot (direct sunlight, on top of a heater etc) as this might affect the battery... I am curious as to what might happen to the battery if it is left in a hot/warm place? What are the average safe operational/storage tempertures for lithium batteries - are we talking 6-0 degrees C for example? cheers! There is a lot of battery information at 'batterydata.com'. |
#8
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"safe" temperatures for lithium batteries?
In article , ray
wrote: There is a lot of battery information at 'batterydata.com'. too bad that it's neither objective nor accurate. that site is extremely biased in favour of lithium batteries. for instance, he claims that devices with lithium ion batteries are more reliable because the battery doors break on devices that use aa batteries. that has *nothing* to do with the battery and everything to do with the battery door itself. there are a number of devices with lithium batteries with crappy doors that prematurely fail. or his claim that aa batteries are only found on low end products. the nikon d300 battery grip can take aa batteries. apparently, that's low end. |
#9
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"safe" temperatures for lithium batteries?
On Tue, 15 Jan 2008 08:23:33 -0800, nospam wrote:
In article , ray wrote: There is a lot of battery information at 'batterydata.com'. too bad that it's neither objective nor accurate. that site is extremely biased in favour of lithium batteries. for instance, he claims that devices with lithium ion batteries are more reliable because the battery doors break on devices that use aa batteries. that has *nothing* to do with the battery and everything to do with the battery door itself. there are a number of devices with lithium batteries with crappy doors that prematurely fail. or his claim that aa batteries are only found on low end products. the nikon d300 battery grip can take aa batteries. apparently, that's low end. As with most information on the internet: Caveat Emptor. |
#10
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"safe" temperatures for lithium batteries?
On Tue, 15 Jan 2008 09:59:08 -0700, ray wrote in
: On Tue, 15 Jan 2008 08:23:33 -0800, nospam wrote: In article , ray wrote: There is a lot of battery information at 'batterydata.com'. too bad that it's neither objective nor accurate. that site is extremely biased in favour of lithium batteries. for instance, he claims that devices with lithium ion batteries are more reliable because the battery doors break on devices that use aa batteries. that has *nothing* to do with the battery and everything to do with the battery door itself. there are a number of devices with lithium batteries with crappy doors that prematurely fail. or his claim that aa batteries are only found on low end products. the nikon d300 battery grip can take aa batteries. apparently, that's low end. As with most information on the internet: Caveat Emptor. I would say, "It's worth every penny you're paying for it." -- Best regards, John Navas Panasonic DMC-FZ8 (and several others) |
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