<s>
A	O
CR-V3	B-Algorithm
battery	I-Algorithm
(	O
sometimes	O
CRV3	B-Algorithm
)	O
is	O
a	O
type	O
of	O
disposable	O
high-capacity	O
3-Volt	O
battery	O
used	O
in	O
various	O
electronic	O
appliances	O
,	O
including	O
some	O
digital	B-Device
cameras	I-Device
.	O
</s>
<s>
It	O
has	O
the	O
shape	O
and	O
size	O
of	O
two	O
side-by-side	O
AA	B-Algorithm
batteries	I-Algorithm
.	O
</s>
<s>
This	O
allows	O
CR-V3	B-Algorithm
batteries	I-Algorithm
to	O
function	O
in	O
many	O
(	O
though	O
not	O
all	O
)	O
devices	O
originally	O
designed	O
for	O
only	O
AA	B-Algorithm
batteries	I-Algorithm
.	O
</s>
<s>
An	O
RCR-V3	B-Algorithm
battery	O
is	O
a	O
rechargeable	O
3.7	O
V	O
lithium-ion	O
battery	O
.	O
</s>
<s>
Often	O
,	O
a	O
CR-V3	B-Algorithm
battery	I-Algorithm
is	O
a	O
single	O
cell	O
based	O
on	O
a	O
non-rechargeable	O
lithium	O
battery	O
chemistry	O
,	O
with	O
a	O
nominal	O
voltage	O
of	O
3V	O
(	O
the	O
same	O
as	O
2	O
alkaline	O
AA	B-Algorithm
batteries	I-Algorithm
)	O
.	O
</s>
<s>
Duracell	O
Ultra	O
CR-V3	B-Algorithm
is	O
composed	O
of	O
two	O
3V	O
AA	B-Algorithm
sized	O
lithium	O
cells	O
connected	O
in	O
parallel	O
.	O
</s>
<s>
Because	O
both	O
lithium	O
and	O
lithium-ion	O
chemistries	O
offer	O
higher	O
energy	O
density	O
than	O
NiMH	B-Device
rechargeable	O
batteries	O
or	O
even	O
alkaline	B-Algorithm
batteries	I-Algorithm
,	O
a	O
CR-V3	B-Algorithm
battery	I-Algorithm
is	O
designed	O
to	O
last	O
much	O
longer	O
than	O
a	O
pair	O
of	O
AA	B-Algorithm
batteries	I-Algorithm
.	O
</s>
<s>
Some	O
more	O
recent	O
CR-V3	B-Algorithm
batteries	I-Algorithm
are	O
composed	O
of	O
2	O
lithium	O
AA	B-Algorithm
rechargeable	O
batteries	O
.	O
</s>
<s>
Rechargeable	O
lithium-ion	O
RCR-V3	B-Algorithm
batteries	O
,	O
with	O
a	O
nominal	O
voltage	O
of	O
3.7	O
V	O
,	O
are	O
also	O
available	O
.	O
</s>
