Introduction
This compact DC-DC Isolated 4-stage Boost charger uses the
latest switch-mode technology and is designed to meet all modern
automobile applications, particularly dual battery systems.
Galvanic isolated means you can connect to any load without
worrying about interference from the input to the output.
The 4-stage Boost Charger is designed to charge Lead-acid
batteries and LiFePO4 batteries to their best level, thanks to a
smart 4-stage charging algorithm and voltage boosting to deliver a
full charge without the issue of voltage drops. This improves the
charge delivered to your battery, increasing battery life and saving
on premature battery failure.
Since the DC supply from a vehicle’s alternator is often unstable
leading to a shortened lifespan of electronic device, this DC-DC
isolated boost charger can be used as a constant voltage supply to
run accessories that require a stable and clean DC voltage. For
example: LCD TV, Digital Hi-Fi system, Wireless telephone
systems, refrigeration systems, LED lighting, games, mobile
computer and more....
The Isolated DC-DC boost charger is designed with overload and
short circuit protection. It will automatically switch off the unit and
re-start if the overload or short circuit problem is corrected. The
cooling fan is thermal controlled. It will switch on and off
automatically to control the internal temperature of the unit.
Remote on/off controls
The male terminal (6.3mm) on the front panel is used for remotely
switching on the DC-DC boost charger by applying 9-30VDC
positive voltage (e.g. ignition from the vehicle engine or an external
switch). Note: The working voltage is 32VDC maximum. The
device power on/off switch must be switched off if you are using this
feature.
CAUTION!
Do not connect the male terminal to DC source over 32VDC or the
device will be damaged. Keep the remote ON/OFF terminal
insulated if it is not in use.
Instruction and normal responses
Operation as DC boost charger
Connect the input to the DC source, such as your vehicle alternator using
suitable size cabling. Adjust the output voltage setting dipswitch to get the
optimum charge to suit your battery specification.
Connect the battery to the DC output. . Turn ON the Power switch, the
“POWER ON” LED lights up, this indicates the device is ready for charging.
The DC-DC Isolated boost charger will perform the four stage charge
automatically. The “BULK” LED lights up. This means the battery charger
is beginning at the 1
st
stage of charging.
The 1
st
stage is to ensure
battery is always charged at the
maximum charging condition.
This is to boost up the charging
cycle and particularly wake up a
weak battery to absorb energy.
After 10-20 mins, the charger will
switch to 2
nd
stage, the “BULK”
LED remains ON, the battery is
charged at the maximum current
to the battery.
At the 3
rd
stage, the charger will switch to “ABSORPTION” mode, the red
LED goes out and the yellow LED lights up. The device is delivering
constant voltage to the battery with reduced current.
At the 4
th
stage, the battery has been charged to about 90% of its rated
capacity. The “ABSORPTION” LED goes out and the “FLOAT” green LED
lights up. The charging current is decreased and the charging voltage is
held at a constant level. Battery is now under “FLOAT” constant charging.
Operation as Constant Voltage Supply
The device can be used as a constant voltage supply. Set the
dipswitch No. 4 or 5 to ON position. The device now operates as a
constant voltage supply. The bulk and absorption LED goes out.
Dipswitch No. 1, 2 , 3 and 6 are now disabled. The POWER ON
and FLOAT LED light up.
Safety Operation!
A.
If cables have to be fed through walls with sharp edges, always use
tubes or ducts to prevent damage.
B.
Do not pull on the cable, fasten the device and cable securely. Lay
the cable so that it cannot be tripped over..
C.
Use the device only in the described manner.
D.
Children should be supervised to ensure that they do not play with
the device.
E.
Do not allow water to drip or splash on the device.
F.
Make sure the air inlets and outlets of the device are not covered.
G.
Operate the device only if you are certain that the housing and the
connection cables are undamaged.
CAUTION!
1.
Do not use the device near flammable materials or in any location
that may accumulate flammable fumes or gasses.
2.
Hot surface when operating, especially at full load condition.
3.
Make sure the polarity is correct
4.
Do not locate the device on the top of the battery. Especially Flooded,
Wet type battery. It may generate gas vapor while charging.
5.
Do not charge non-rechargeable batteries.
6.
Use the appliance only in the described manner.
7.
Do not expose the device to a heat source, such as direct sunlight or
heating.
8.
Store the device in a dry and cool place
External switch
for remote On/Off
Apply switched
9~30VDC positive
12V Charging Daigram
Charging
Current
Charging Time
Charging
Voltage
Charging
Voltage
13.8V
14.8V
15.0
14.0
12.0
10.0
20
90
40
60
80
100
3 stage
Absorption
Boost
Stage
4 stage
Float
2 stage
Bulk
(V)
(%)
Charging
Volume
10-20 mins
6 Hrs max.
Bulk / Abs.
Float
Battery Type
SW 1, on
29.6VDC
27.6VDC
Flooded
SW 2, on
29.2VDC
27.0VDC
AGM
SW 3, on
28.4VDC
26.4VDC
SLA /
SW 6, on
LiFePO
SW 4, on
SW 5, on
Output Voltage Setting
29.2VDC
Dip switch setting
Constant voltage setting
24.0VDC
27.6VDC
GEL
4
