<s>
A	O
silver	B-Algorithm
zinc	I-Algorithm
battery	I-Algorithm
is	O
a	O
secondary	B-Architecture
cell	I-Architecture
that	O
utilizes	O
silver(I,III )	O
oxide	O
and	O
zinc	B-Application
.	O
</s>
<s>
Silver	O
zinc	B-Application
cells	O
share	O
most	O
of	O
the	O
characteristics	O
of	O
the	O
silver-oxide	B-Device
battery	I-Device
,	O
and	O
in	O
addition	O
,	O
is	O
able	O
to	O
deliver	O
one	O
of	O
the	O
highest	O
specific	O
energies	O
of	O
all	O
presently	O
known	O
electrochemical	O
power	O
sources	O
.	O
</s>
<s>
Long	O
used	O
in	O
specialized	O
applications	O
,	O
it	O
is	O
now	O
being	O
developed	O
for	O
more	O
mainstream	O
markets	O
,	O
for	O
example	O
,	O
batteries	O
in	O
laptops	B-Device
and	O
hearing	O
aids	O
.	O
</s>
<s>
Silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
batteries	I-Algorithm
,	O
in	O
particular	O
,	O
are	O
being	O
developed	O
to	O
power	O
flexible	O
electronic	O
applications	O
,	O
where	O
the	O
reactants	O
are	O
integrated	O
directly	O
into	O
flexible	O
substrates	O
,	O
such	O
as	O
polymers	O
or	O
paper	O
,	O
using	O
printing	O
or	O
chemical	O
deposition	O
methods	O
.	O
</s>
<s>
Experimental	O
new	O
silver	O
–	O
zinc	B-Application
technology	O
(	O
different	O
to	O
silver-oxide	O
)	O
may	O
provide	O
up	O
to	O
40%	O
more	O
run	O
time	O
than	O
lithium-ion	O
batteries	O
and	O
also	O
features	O
a	O
water-based	O
chemistry	O
that	O
is	O
free	O
from	O
the	O
thermal	O
runaway	O
and	O
flammability	O
problems	O
that	O
have	O
plagued	O
the	O
lithium-ion	O
alternatives	O
.	O
</s>
<s>
The	O
silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
battery	I-Algorithm
is	O
manufactured	O
in	O
a	O
fully	O
discharged	O
condition	O
and	O
has	O
the	O
opposite	O
electrode	O
composition	O
,	O
the	O
cathode	O
being	O
of	O
metallic	O
silver	O
,	O
while	O
the	O
anode	O
is	O
a	O
mixture	O
of	O
zinc	B-Application
oxide	O
and	O
pure	O
zinc	B-Application
powders	O
.	O
</s>
<s>
Non-rechargeable	O
silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
batteries	I-Algorithm
powered	O
the	O
first	O
Soviet	O
Sputnik	B-Language
satellites	O
,	O
as	O
well	O
as	O
US	O
Saturn	O
launch	O
vehicles	O
,	O
the	O
Apollo	O
Lunar	O
Module	O
,	O
lunar	O
rover	O
and	O
life-support	O
backpack	O
.	O
</s>
<s>
They	O
provided	O
greater	O
energy	O
densities	O
than	O
any	O
conventional	O
battery	O
,	O
but	O
peak-power	O
limitations	O
required	O
supplementation	O
by	O
silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
batteries	I-Algorithm
in	O
the	O
CM	O
that	O
also	O
became	O
its	O
sole	O
power	O
supply	O
during	O
re-entry	O
after	O
separation	O
of	O
the	O
service	O
module	O
.	O
</s>
<s>
After	O
the	O
Apollo	O
13	O
near-disaster	O
,	O
an	O
auxiliary	O
silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
battery	I-Algorithm
was	O
added	O
to	O
the	O
service	O
module	O
as	O
a	O
backup	O
to	O
the	O
fuel	O
cells	O
.	O
</s>
<s>
The	O
Apollo	O
service	O
modules	O
used	O
as	O
crew	O
ferries	O
to	O
the	O
Skylab	O
space	O
station	O
were	O
powered	O
by	O
three	O
silver	B-Algorithm
–	I-Algorithm
zinc	I-Algorithm
batteries	I-Algorithm
between	O
undocking	O
and	O
service	O
module	O
jettison	O
,	O
as	O
the	O
hydrogen	O
and	O
oxygen	O
tanks	O
could	O
not	O
store	O
fuel-cell	O
reactants	O
through	O
the	O
long	O
stays	O
at	O
the	O
station	O
.	O
</s>
