Stanbury Scarf and Lord New
Generation Chargers are industrial grade in design
for the larger domestic systems that utilize large
battery banks. They are supplied as standard with
the Geebung board fitted. The Electronic chargers
(SNG) offer much lower generator draw, and are
specifically designed for generator use.
The LCD on the front panel continuously displays
the battery charger output voltage and current.
There is no timed shutdown. But the battery charger
may be turned ON or OFF via the on/off switch
on the front panel.
A preset (60 - 120mins) timed voltage boost is
achieved by pressing and holding the boost button
for 5 seconds. To extend the boost time, wait
for a minimum of 5 seconds and then press the
boost button for another 5 seconds. This increases
the boost time by 15 minutes. This process can
be repeated four times to give a maximum boost
time of Preset + 60mins. The charger reverts back
to its normal constant power/constant voltage
operation after the boost charge.
Boost will only operate after 2 hours of constant
voltage. Battery temperature compensation of the
constant voltage may be included.
Using switch mode technology they are very quiet,
very efficient & very light in comparison
with older chargers.
They are built to a 3 -1 taper which means that
rated output is obtained at a battery voltage
of 2.1 volts per cell while charging and tapering
to one third of rated output at 2.6 volts per
cell. This means that the one charger can be used
in either 8 hour or 12 hour charging situations
as well as any intermediate charging time. There
is no special model for 8 hour charging. The charging
time required is simply a function of the battery
size. It means that a particular charger will
charge one size of battery in 8 hours and a battery
50% larger in 12 hours. From this it follows that
intermediate battery sizes may be charged with
a corresponding range of charging times.
The state of the charge is determined by what
is known as the DV/DT method. This means that
the charge is terminated when the battery voltage
stops rising. The effect of this is that the battery
will be correctly charged no matter what its condition.
Previously unavailable charging data is displayed
on the charger during and at the end of every
charge cycle. This makes problem solving much
easier, be the problem in the charger, battery,
or the operating environment.
A 2 hour equalise charge is automatic after the
charger has been continuously connected to the
battery for 26 hours. In 7 day a week applications
manual equalising is necessary.
Construction is based on modular concept. Should
a module fail an exchange module can be fitted
in a few minutes. Exchange modules are readily
available so that down time is greatly reduced.
Three basic power module sizes are used in building
up chargers. By selecting appropriate module combinations
chargers of any size are possible.
* Light, about 25% the weight of conventional
* Efficient, well over 90% efficient compared
to 55-67% for conventional designs. We have been
saving our customers money since 1997
* Economical, draws up to 30% less current from
your mains supply than old designs.
* Power factor near unity, old designs less then
* Controlled output. We set the output and it
remains the same regardless of local mains variations.
* DVDT Control, No smart charger can be without
* LCD display. This gives comprehensive charge
information, current, voltage, time on charge,
ampere hours, and much more.
* Lower battery temperature rise, Output is near
pure DC so the battery heats up less and has lower
water consumption during charging.
* Proven reliable operation. In operation since
1993 Stanbury Scarf and Lord's track record is
* Full manufacturers support - proven, reliable
and consistent, Australia wide.
* Quality built for Australia and Australian conditions
which are amongst the toughest in the world. Convection
cooling means no moving parts and more reliability.
* Able to cope with varying voltage changes. For
large voltage changers please seek manufactures
Stanbury Battery Chargers are unconditionally
guaranteed against defect in workmanship or materials
for a period of 1 year from date of purchase.
Constant Voltage Boost (CVB) Battery Chargers
return constant power (CW) back into the battery
until the battery voltage reaches the Constant
Voltage (CV) Level. Thereafter, the charger current
falls depending on the state of charge of the
battery. If the battery is loaded and the voltage
falls below the CV level, the charger reverts
back to the CW mode and the whole process repeats.
In this way, full use is made of the battery charger
capacity during the Constant Power stage. During
the Boost mode, the maximum charger output current
is limited to 30 - 40% of the rated battery charger