Hello Ted,
No one makes a Ultra Low Self Discharge(ULSD) C or D cell, at least not that I have been able to receive and test. Several suppliers have claimed to but they do not test to be truly ULSD cells after brief testing. Perhaps this is because consumers want both ULSD and high capacity and these are competing features of the NiMH battery type. I have not seen both things in the same battery. You can get a good balance of these two characteristics in some batteries but when you really push either the charge retention and/or capacity features you affect the other. Does that make sense?
The general basis of ULSD is that the higher the capacity of NiMH cell the more pronounced the self discharge so there is really no one that makes a true ULSD C or D cell. This is not an absolute thing but it is a god generalization.
Folks that want that ULSD charge retention feature of the "new" ULSD NiMH types, use a battery size adapter to make the AA cells work in a device that uses C or D cells.
You can find those on our battery adapters page in a couple of different types, They are very popular.
http://www.greenbatteries.com/batteryholders1.html
Hope that helps.
Sincerely,
Curtis
Responsible Energy Corporation
Curtis Randolph - CEO
454 Jill Court
Incline Village, NV 89451
cell 775-722-9901
fax 815-301-3958
www.greenbatteries.com
Follow me: http://twitter.com/curtisrandolph
mailto:curtis@greenbatteries.com
Friday, September 25, 2009, 5:59:39 AM, you wrote:
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No one makes a Ultra Low Self Discharge(ULSD) C or D cell, at least not that I have been able to receive and test. Several suppliers have claimed to but they do not test to be truly ULSD cells after brief testing. Perhaps this is because consumers want both ULSD and high capacity and these are competing features of the NiMH battery type. I have not seen both things in the same battery. You can get a good balance of these two characteristics in some batteries but when you really push either the charge retention and/or capacity features you affect the other. Does that make sense?
The general basis of ULSD is that the higher the capacity of NiMH cell the more pronounced the self discharge so there is really no one that makes a true ULSD C or D cell. This is not an absolute thing but it is a god generalization.
Folks that want that ULSD charge retention feature of the "new" ULSD NiMH types, use a battery size adapter to make the AA cells work in a device that uses C or D cells.
You can find those on our battery adapters page in a couple of different types, They are very popular.
http://www.greenbatteries.com/batteryholders1.html
Hope that helps.
Sincerely,
Curtis
Responsible Energy Corporation
Curtis Randolph - CEO
454 Jill Court
Incline Village, NV 89451
cell 775-722-9901
fax 815-301-3958
www.greenbatteries.com
Follow me: http://twitter.com/curtisrandolph
mailto:curtis@greenbatteries.com
Friday, September 25, 2009, 5:59:39 AM, you wrote:
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