Re: D Cell battery current

Phil Allison wrote:
"Dutchman"


I have a Duracell D battery that has a voltage of 1.5V. I am curious
on how much current I can expect to draw from this batter. Wikipedia
shows that for a standard D cell alkaline battery the capacity is
20500 (mAh). Does this mean that each battery should be able to
provide 20 A h?



** Only if discharged over a long period - like 100 hours.

Plus you call 0.9 volts the end.



My system draws about 1A so it should run for 20 hours?



** See the maker's data:

http://www.duracell.com/oem/Pdf/new/MN1300_US_CT.pdf

Be lucky to make 3 hours.



How can I figure how much current the D cell battery is rated to
provided? I don't see anything on the packaging.



** See the maker's data:

http://www.duracell.com/oem/Pdf/new/MN1300_US_CT.pdf




If I need more current with the same batteries what should I do?



** Use a NiCd or NiMH rechargeable.

A D size one of of them will give you 1 amp for 5 hours or more.




.......... Phil





Huh?

Total energy storage of NiCd or NiMH is much less than primary batteries. Although higher current, time to discharge is much shorter.


Lithium D's provide best energy density with high current.



--
Many thanks,

Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@xxxxxxxxxx

Please visit my GURU's LAIR web site at http://www.tinaja.com
.

Relevant Pages

  • Re: D Cell battery current
    ... shows that for a standard D cell alkaline battery the capacity is ... Does this mean that each battery should be able to ... How can I figure how much current the D cell battery is rated to ... The "capacity" is totally dependent upon the load current and the ...
    (sci.electronics.design)
  • Re: D Cell battery current
    ... shows that for a standard D cell alkaline battery the capacity is ... Does this mean that each battery should be able to ...
    (sci.electronics.design)
  • Re: Battery class driver.
    ... than an attribute of any given battery. ... should be a 'power supply' class, not a battery class at all? ... The SBS spec takes pain to always refer to "capacity" or "charge ... the SBS defines the possible capacity units ...
    (Linux-Kernel)
  • Re: [RFC][PATCH 2/2] ACPI: handle timer ticks proactively
    ... Battery Model: DELLUD2646 ... Design Capacity: 53280 mWh ... Last Full Capacity: 48384 mWh ...
    (Linux-Kernel)
  • Re: [SLE] Re: ACPI problems
    ... What I get is a battery indicator that DOES show charge/nocharge. ... remaining capacity: 3760 mAh ...
    (SuSE)