•
Battery Ty
p
e Select
i
o
n
If onl
y tw
o b
a
t
teries are used wit
h
a 3-bank c
h
arger, then connect the unused
o
u
tpu
t
cab
l
e
t
o
eith
er o
ne
o
f
th
e
two
bat
teries
,
as instructed
i
n ite
m
8 above.
A
l
way
s c
on
n
ect each charger output
t
o a s
i
ng
l
e 12V batter
y
even if the batter
i
es are
w
ir
ed in se
ri
es f
or 24
V
o
r
3
6V
.
Output No
.
1
Output No
.
2
ProS port 8, 12 and
2
0
Wiring Diagram
IMPORTANT NOTICE: Lead-Acid I Gel Battery Selector
The ProSpor! battery charger is factory set for lead-acid batteries. It can be reset for gel
batteries by using the one-time gel selector
.
This selector is simply a jumper on the side
of the charger where the DC cables are located. By cutting and removing the jumper
the ProSpor! will be set for gel batteries. After cutting the jumper fill the dimpled area
with a marine grade silicon sealant
.
Please contact Sterling Power Products if you have
any questions regarding the correct battery type setting
.
This is a one-time selector.
L
i
v
e
(
b
row
n
o
r
bl
a
ck
)
Neut
r
al
(
bl
u
e or
w
h
i
te
)
E
ar
t
h
(y
e
ll
o
w
-
gr
e
e
n
)
~atteryType
·
SelectQr
(
yel
l
o
w w
ire o
n
side of
ch
a
r
ge
r)
seale
d
+
ge
l
batter
i
es
:
cut ye
l
l
ow w
ire
open lea
d
-acid
batte
r
ies
:
l
eave
co
n
nected
DD
• Charg
i
ng Ba
t
teries
Output No
. 1
Outp
u
t No. 2
Output N
o. 3
ProS
po
rt
20plus
Wi
ring D
ia
g
ram
The Sterling ProSpor
t s
eries is designed to charge
,
c
o
ndition and maintain
y
our batterie
s.
P
l
ease follo
w
these
steps each time you use your ProSpo
r
t charger
.
1
.
Open all batter
y
compartments and
v
entilate for at least 15 minutes before appl
y
ing
A
C po
w
er to
y
our
charger
. W
hile charging
y
our batteries make sure to keep
y
our batter
y
compartment open
,
allo
w
ing for free air
v
entilation.
2. Make sure all DC batter
y
connections are t
i
ght and clean
.
Follo
w
the batter
y
manufactu
r
er
'
s
recommendation for battery cell caps
.
Loosen caps if applicabel
.
3. Connect a
hea
v
y
duty extension cord to the ProSpo
r
t charger first
.
After connecting the e
x
tension cord to
the charger proceed to plug the extension cord to a nearb
y
RCD-protected AC po
w
er outlet
.
4. Obser
v
e the on
-
board LED indicators for a solid green and red indication
.
This
w
ill tell
y
ou the batte
r
ie
s
are
in the charging process.
5. Charge
y
our batte
r
ies until onl
y
the g
r
een LED indicator remain
s
on. This indicates that the charging
process is comple
t
ed and
y
our batteries are fully charged and are no
w
being maintained in a gentle float
/
storage mode. (Recommended
w
hile your boat is not in use.) The ProSport can be left on in this mode
indefinitely and
w
ill ne
v
er o
v
ercharge
y
our batteries
.
6. W
h
en ready to use you
r
boat
,
unplug the e
x
tension cord from the AC po
w
er out
l
et first
,
follo
w
ed by
unplugging the charger
.
Domestic
Batter
y
1
Engine Start Batter
y
or Domestic Batter
y
2
Li
v
e
(
brown or b
l
ack)
Neutr
al
(
b
lu
e or
w
hite
)
E
a
rth
(
y
e
l
lo
w
-gr
ee
n)
o
[J
0
Domesti
c
Batter
y
1
Domestic
B
a
tter
y
2
Engine Start Batter
y
or Domestic Batter
y
3
