<s>
A	O
water-activated	B-Algorithm
battery	I-Algorithm
is	O
a	O
disposable	O
reserve	B-Algorithm
battery	I-Algorithm
that	O
does	O
not	O
contain	O
an	O
electrolyte	O
and	O
hence	O
produces	O
no	O
voltage	O
until	O
it	O
is	O
soaked	O
in	O
water	O
for	O
several	O
minutes	O
.	O
</s>
<s>
This	O
battery	O
type	O
is	O
specifically	O
designed	O
to	O
pollute	O
less	O
(	O
see	O
environmentally	O
friendly	O
claims	O
)	O
due	O
to	O
the	O
lesser	O
use	O
or	O
the	O
absence	O
of	O
heavy	B-Operating_System
metals	I-Operating_System
.	O
</s>
<s>
Water-activated	B-Algorithm
batteries	I-Algorithm
have	O
been	O
used	O
in	O
radiosondes	O
that	O
should	O
n't	O
contain	O
heavy	B-Operating_System
metals	I-Operating_System
since	O
they	O
regularly	O
fall	O
to	O
the	O
ground	O
or	O
ocean	O
surface	O
,	O
and	O
indefinitely	O
remain	O
there	O
.	O
</s>
<s>
Another	O
water-activated	B-Algorithm
battery	I-Algorithm
had	O
been	O
invented	O
by	O
Susumu	O
Suzuki	O
of	O
Total	O
System	O
Conductor	O
.	O
</s>
<s>
Aluminium	O
anodes	O
are	O
used	O
on	O
many	O
water-activated	B-Algorithm
batteries	I-Algorithm
designed	O
for	O
use	O
with	O
salt	O
water	O
such	O
as	O
seawater	O
.	O
</s>
