Sterling Power Products
Copyright
Product Information
The Sterling Battery-to-Battery Charger is
a DC to DC charger designed to be put
between a starter battery and an auxiliary /
house / domestic battery. The product’s
advantages are:
5-10+ times faster charging over
i
conventional charging systems (e.g. the
stand alone alternator).
Fool the alternator into working at its
i
maximum ability in order to ensure all its
surplus power is utilized to charge the
auxiliary battery bank to its maximum
capacity without allowing the starter battery
to become discharged.
Allows the correct voltage and charging
i
curve to be selected for you specific
battery chemistry.
Fixes problems associated with vehicles
i
with smart alternators on Euro 5 / 6
engines. It saves your batteries from high
voltage (e.g. Mercedes 15.4V) - gassing
and low voltages (low as 12.2V) - sulfation.
All unwanted side effects to these new
smart alternators.
Fast and easy installation. Simply
i
connect the unit to your starter battery and
your aux battery.
No extra connections to the alternator
i
and no extra wiring for a split charge
system required.
Voltage drops in cabling compensated
i
for.
Several battery-to-battery chargers can
i
be used in parallel for higher output power
or multiple battery banks.
No voltage rises on the alternator or the
i
starter battery. Therefore, no problems with
the engine's management system.
No vehicle warranty issues as the
i
alternator and the main electrical system
remains untouched.
Engine Starter
Battery
(alternator)
+
+
+
Pos
in
Pos
out
Neg
fuse
fuse
House / Domestic / Aux
Battery Bank
1) Automatic activation (default setting).
The most common mode, used in 99% of
all installations including vehicles with
Regen. braking system.
This means that
the unit is voltage sensitive (no ignition
feed required).
The moment the charger is
installed onto an input and output battery it
shall start charging for 120 seconds then turn
off. Only when the input voltage goes to
13.2V-19.0V then the unit will simply start
charging. If the voltage drops below 13.0V the
unit shall turn off. With a caveat, read on.
However
, if the input voltage has exceeded
13.2V for 5 seconds the regen. braking timer
is prepped and shall become active if the
input voltage drops down to 12.0V-13.3V.
This timer is 240s (default - can be changed)
and allows the charger to continue charging
at these lower input voltages. If the voltage
drops below 11.9V the charger goes to sleep
irrespective of the timer. If the input voltage
remains between 11.9V-13.0V for over 240s
the charger also goes to sleep. To wake the
charger, the input voltage needs to rise above
13.2V - this shall also reset the regen. braking
timer.
+
+
+
Auto
Ignition
Low V
regen.
braking
Link
2) Ignition feed w/ safe voltage activation
Mode 2 is identical to Mode 1. The only
difference is that it requires a live signal on the
ignition AND the aforementioned input
voltages for it to remain charging. For
example, if you have over 13.2V on the input
terminal with no live feed then the Pro Batt
Ultra shall be in standby. Only once you apply
the ignition feed signal the Pro Batt shall start
charging. The charger turns off when you turn
off your ignition.
This mode is beneficial as it give you more
control over when the charger operates. With
a live ignition and low input voltage the
charger shall still charge for 240 seconds,
then turn off.
How to connect?
Link the Auto and the
Ignition terminals on
the block together,
as shown.
+
+
+
Auto
Ignition
Low V
regen.
braking
How to connect?
C o n n e c t i g n i t i o n
feed to the Ignition
terminal. Can be any
live feed.
+
+
+
Auto
Link
(optional)
3) Pure ignition feed - WARNING flat batt.
If you just connect the ignition feed only to the
bottom connector (remove the link) the BB
shall operate when the ignition is live and turn
off when the ignition is off. There is no timer,
no trigger voltages - only a 10V (20V at 24V)
low voltage trip.
With the link wire connected and the ignition
feed connected the BB shall operate when
the ignition is live. However, it shall also
operate when there is no ignition under the
conditions of mode 1 (above).
This mode is ideal for those who have Euro 6
engines that start up with the alternator off.
Where the starter battery’s voltage does not
exceed 13.3V, but you want the BB to charge.
How to connect?
Connect ignition feed
to Low V regen braking.
Link Auto to ignition
connector.
6
R.B.F
R
egenerative
raking riendly
B
F
S
TERLI G
P
OWER
Main Power
Terminals
Auxiliary
Control
Terminals
Fit in a cool dry well ventilated space.
Should be installed by a competent
person, conforming with the laws of the
country.
Connect positive cables (in red) to
the terminal block, as shown below. Similarly,
ensure fuses are installed and negatives are
common.
R.B.F
R
egenerative
raking riendly
B
F
R.B.F
R
egenerative
raking riendly
B
F
8
Double all voltages for 24V, triple for 36V
and quadruple for 48V.
Ensure the charger is wired up as
depicted above (larger diagram on
previous page). The Pro Batt Ultra shall
light up provided it has battery voltage
across the
and
neg
terminal. If
Pos in
Pos out
is also connected the unit shall
start charging for 120 seconds (1/2 of the
regen. braking timer). During the first
start up you can change the battery
chemistry profile.
In default mode (1) or mode (2) the Batt
Ultra shall simply turn off and goes to
sleep after 240 seconds (can be
changed) if the input voltage has not
risen above 13.2V.
If you
WARNING
,
have it set to mode (3) (Ignition Force
Mode) and the ignition is live then the
charger shall continue charging until the
input battery drops to
(default) x2
10.0V
for 24V.
.
VERY LOW
In default mode (1) or mode (2) the input
voltage needs to rise to above 13.2V-
19.0V (x2 for 24V) in order for the Batt
Ultra to start charging. This can be
achieved by starting your engine. Above
13.2V, for 5 seconds, the regenerative
braking timer activates (120 sec (first
time after start/wakeup) then 240
seconds
default
).
There may be a delay of up to 60
seconds before the BB ultra starts.
This is required to complement the
regenerative braking aspect of modern
E u r o 5 / 6 + e n g i n e s - w h e r e t h e
alternator’s voltage can drop below 13V
for a short period of time. When the
alternator’s voltage rises above 13.2V
the 240 second timer ends (+ reactivates
the timer) and the charger remains
charging.
Basic Operation / Installation
+ +
Pos
in
Pos
out
Neg
fuse
fuse
House / Domestic / Aux
/ Bow thruster
Main Power
Terminals
If your engine is running and you’re confident your alternator is connected, yet you are only getting 12-13V on the input terminal, please connect the ignition feed to the unit (see right). This shall turn the charger on when the ignition is on.
+
With the Auto link connected and no signal from the ignition then
the BB shall operate identically to Mode 1. If you only connect
the ignition feed but remove the link connector then the unit is
solely ignition feed dependent. Live ignition - the BB is on,
ignition off then the BB turns off. There is a low cut off at 10V
(20V at 24V) on the input. If you have both the link and a live
ignition the BB shall operate at any input voltage (down to 10V).
When the ignition feed turns off the BB shall still charge with
Auto Mode parameters. Ideal if you have shore power charger
charging up the input battery etc.
WARNING
- this mode may lead to flat batteries.
Please re-write as it tells you 3 times the same thing.
line to
ignition