Electronics Forums > D Cell battery current

# D Cell battery current

Dutchman
Guest
Posts: n/a

 07-19-2007, 06:13 AM
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?

My system draws about 1A so it should run for 20 hours? Unfortunately
the battery doesn't seem to be giving me back that much current and I
was hoping if someone could explain what is going on. In fact when I
first power up my system there is a surger of current drawn and the D
cells don't seem to handle that well.

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

If I need more current with the same batteries what should I do? Line
them up in parallel? Will this double the current?

-Henk

Michael A. Terrell
Guest
Posts: n/a

 07-19-2007, 06:31 AM
Dutchman wrote:
>
> 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?
>
> My system draws about 1A so it should run for 20 hours? Unfortunately
> the battery doesn't seem to be giving me back that much current and I
> was hoping if someone could explain what is going on. In fact when I
> first power up my system there is a surger of current drawn and the D
> cells don't seem to handle that well.
>
> How can I figure how much current the D cell battery is rated to
> provided? I don't see anything on the packaging.
>
> If I need more current with the same batteries what should I do? Line
> them up in parallel? Will this double the current?
>
>
> -Henk

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

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Phil Allison
Guest
Posts: n/a

 07-19-2007, 06:51 AM

"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

Don Lancaster
Guest
Posts: n/a

 07-19-2007, 09:31 AM
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

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

Phil Allison
Guest
Posts: n/a

 07-19-2007, 10:12 AM

"Don Lancaster"
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.
>>
>>
>>

> Huh?
>
> Total energy storage of NiCd or NiMH is much less than primary batteries.

** Utter *******s.

Go look up the data instead of citing fallacies.

Recent AA NiMH cells have more capacity than AA alkalines.

Sanyo NiMH D cells are rated up to 8.5 AH with a 10 amp discharge and 7 AH
at 40 amp discharge.

http://sanyo.wslogic.com/pdf/pdfs/HR-DU.pdf

........ Phil

BobG
Guest
Posts: n/a

 07-19-2007, 05:15 PM
The ma-hr rating is taken at a current that is 1/10th of the rating.
You cold measure the short circuit current 'real quick' with a small
resistance. You caould also time how long it takes to discharge thru a
1 ohm R for example.

Dutchman
Guest
Posts: n/a

 07-19-2007, 05:52 PM
Thanks for the great info guys!!!

Martin Riddle
Guest
Posts: n/a

 07-19-2007, 11:45 PM

"Dutchman" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) oups.com...
>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?
>
> My system draws about 1A so it should run for 20 hours? Unfortunately
> the battery doesn't seem to be giving me back that much current and I
> was hoping if someone could explain what is going on. In fact when I
> first power up my system there is a surger of current drawn and the D
> cells don't seem to handle that well.
>
> How can I figure how much current the D cell battery is rated to
> provided? I don't see anything on the packaging.
>
> If I need more current with the same batteries what should I do? Line
> them up in parallel? Will this double the current?
>
>
> -Henk
>

Google the 'Peukerts effect' it applies to lead acid batteries, and in some
cases can be applied to others.
The limiting factor for discharge current is internal resistance.

Cheers

joseph2k
Guest
Posts: n/a

 07-21-2007, 11:13 AM
Phil Allison wrote:

>
> "Don Lancaster"
> 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.
>>>
>>>
>>>

>> Huh?
>>
>> Total energy storage of NiCd or NiMH is much less than primary batteries.

>
>
> ** Utter *******s.
>
> Go look up the data instead of citing fallacies.
>
> Recent AA NiMH cells have more capacity than AA alkalines.
>
> Sanyo NiMH D cells are rated up to 8.5 AH with a 10 amp discharge and 7
> AH at 40 amp discharge.
>
> http://sanyo.wslogic.com/pdf/pdfs/HR-DU.pdf
>
>
>
> ....... Phil

How about you bother to check the datasheet that presented previously. The
alkalines were comming in at over 20 Ah.

--
JosephKK
Gegen dummheit kampfen die Gotter Selbst, vergebens.Â*Â*
--Schiller

Phil Allison
Guest
Posts: n/a

 07-21-2007, 12:05 PM

"joseph2k = Criminal Pile of Stinking **** "

> How about you bother to check the datasheet that presented previously.
> The
> alkalines were comming in at over 20 Ah.

** Try ACTUALLY reading the ****ING thing !!!!!!!!!!

YOU vile slimy pile of autistic, psychotic

KIDDIE ROOTING EXCREMENT.

........ Phil

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