<s>
A	O
D	B-Algorithm
battery	I-Algorithm
(	O
D	O
cell	O
or	O
IEC	O
R20	O
)	O
is	O
a	O
standardized	O
size	O
of	O
a	O
dry	B-Algorithm
cell	I-Algorithm
.	O
</s>
<s>
A	O
D	O
cell	O
may	O
be	O
either	O
rechargeable	B-Architecture
or	O
non-rechargeable	O
.	O
</s>
<s>
During	O
World	O
War	O
II	O
,	O
it	O
was	O
designated	O
the	O
Type	O
C	B-Algorithm
battery	I-Algorithm
by	O
the	O
U.S.	O
Navy	O
,	O
leading	O
to	O
confusion	O
with	O
the	O
smaller	O
C	B-Algorithm
cell	I-Algorithm
battery	O
(	O
BA-42	O
)	O
.	O
</s>
<s>
In	O
2007	O
,	O
D	B-Algorithm
batteries	I-Algorithm
accounted	O
for	O
8%	O
of	O
alkaline	B-Algorithm
primary	B-Algorithm
battery	I-Algorithm
sales	O
(	O
numerically	O
)	O
in	O
the	O
US	O
.	O
</s>
<s>
In	O
2008	O
,	O
Swiss	O
purchases	O
of	O
D	B-Algorithm
batteries	I-Algorithm
amounted	O
to	O
3.4	O
%	O
of	O
primary	O
and	O
1.4	O
%	O
of	O
secondary	O
(	O
rechargeable	B-Architecture
)	O
sales	O
.	O
</s>
<s>
D	B-Algorithm
batteries	I-Algorithm
have	O
nominal	O
diameter	O
of	O
33.2	O
±	O
1	O
millimeters	O
(	O
1.3	O
inches	O
)	O
.	O
</s>
<s>
Zinc	B-Algorithm
–	I-Algorithm
carbon	I-Algorithm
Alkaline	B-Algorithm
Li-FeS2	O
NiCd	O
NiMH	B-Device
Li-SOCl2	O
IEC	O
name	O
R20	O
LR20	B-Algorithm
FR20	O
KR20	O
HR20	O
ER	O
?	O
</s>
<s>
Name	O
/	O
Type	O
of	O
this	O
battery	O
Alkaline	B-Algorithm
Zinc	B-Algorithm
–	I-Algorithm
carbon	I-Algorithm
Li-FeS2	O
Li-SOCl2	O
NiCd	O
NiMH	B-Device
IEC	O
name	O
LR20	B-Algorithm
R20	O
FR20	O
ER	O
?	O
</s>
<s>
Duracell	O
brand	O
rates	O
its	O
alkaline	B-Algorithm
D	O
cell	O
performance	O
as	O
approximately	O
20,000	O
mAh	O
at	O
25mA	O
draw	O
,	O
but	O
about	O
10,000	O
mAh	O
at	O
500mA	O
draw	O
.	O
</s>
<s>
This	O
effect	O
is	O
generally	O
less	O
pronounced	O
in	O
cells	O
with	O
NiMH	B-Device
chemistry	O
and	O
hardly	O
at	O
all	O
with	O
NiCd	O
.	O
</s>
<s>
Many	O
commonly	O
available	O
size	O
D	O
rechargeable	B-Architecture
cells	I-Architecture
are	O
actually	O
sub-C	O
cells	O
in	O
a	O
D-sized	O
holder	O
.	O
</s>
