Motormate SDC-1120, SDC-1140, SDC-2210, SDC-1130, SDC-2215 Instruction Manual

DC-DC Isolated

4-step

Booster Charger

SDC-1120 ‧ SDC-2210
SDC-1130 ‧ SDC-2215
SDC-1140 ‧ SDC-2220

INSTRUCTION MANUAL

Please read this instruction manual carefully

before operating the device.

Important Information!

Thank you for purchasing the DC-DC 4 step booster
charger.

Please read this instruction manual carefully before
operating the device. Keep this manual in a safe place for
future reference. This instruction manual is part of the
product. It must be handed over along with the device if it
is passed on to a third party.

WARNING! Risk of Electric Shock!

Do not open the device if it has been connected to the
battery or DC power source.

Warranty only covers the cost of parts and labor for

the repair service within the warranty period. Warranty will
not apply where the device has been misused, altered,
neglected, improperly installed, or physically damaged,
either internally or externally or damaged from improper
use or use in an unsuitable environment. We shall not be
liable for damages, whether direct, incidental, special, or
consequential, or economic loss even though caused by
negligence, or other fault. If the device requires warranty
service, please return it to the place of purchase along
with a copy of the receipt with purchasing date.

Power On/Off

Switch

Output

Terminals

Charging

Status

Indicators

Output

Voltage

Setting

DC Input Cables

External

Control

Wire

Front View

Specification

MODEL SDC-1120 SDC-1130 SDC-1140
Input Voltage

12VDC (8 ~ 16VDC operative)

Bulk / Absorption Charging

14.2V / 14.6V / 14.8V

Float Charging

13.2V / 13.5V / 13.8V

Power Supply

13.2V / 13.5V / 13.8V

Max. DC output current

20A 30A 40A
Efficiency up to 90%
Output short circuit Yes
Battery reverse polarity DC fuse
Input to output fully isolated. Yes
Isolated output terminals 1 1 1
Operation temperature

0°C to 40°C

Ventilation

Cooling Fan, thermal controlled
Weight (kg) 1.4 1.9 2.2
Dimensions (mm) 184 x 115 x 70 250 x 115 x 70 280 x 115 x 70

MODEL SDC-2210 SDC-2215 SDC-2220
Input Voltage

24VDC (10 ~ 32VDC operative)
Bulk / Absorption Charging

28.4V / 29.2V / 29.6V

Float Charging

26.4V / 27.0V / 27.6V

Power Supply

26.4V / 27.0V / 27.6V

Max. DC output current

10A 15A 20A
Efficiency up to 90%
Output short circuit Yes
Battery reverse polarity DC fuse
Input to output fully isolated. Yes
Isolated output terminals 1 1 1
Operation temperature

0°C to 40°C

Ventilation

Cooling Fan, thermal controlled
Weight (kg) 1.4 1.9 2.2
Dimensions (mm) 184 x 115 x 70 250 x 115 x 70 280 x 115 x 70

Specifications subject to change without notice.

This device has been CE tested and
conforms to the applicable directives and
standards.

Disposal

When the device has become unusable, dispose of
it in accordance with the applicable disposal
regulations.

Introduction

This compact DC - DC Isolated 4 step Booster charger uses the
latest switch-mode technology and is designed to meet all
modern automobile applications.

Galvanic isolated means you can connect to any load without
worrying about interference from the input to the output. The 4
step Booster Charger is designed to charge Lead-acid batteries
to its best status, thanks to the first step ( Time controlled charge).
This helps activate the battery status and wake up a weak or flat
battery to a suitable recharging level. This improves the battery
life and in turn helps to save the environment.

Since the DC supply from a vehicle’s generator is often unstable
and this will shorten the life of an electronic device. This DC-DC
isolated booster charger can be used as a constant power 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 booster 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 external lead wire on the rear panel is used for remote
switching with on-board voltage (e.g. ignition from the vehicle
engine or external switch). Note: The device power on/off switch
must be switched off after the external lead wire is connected.

CAUTION!

To prevent malfunction of the device, keep the external lead wire
insulated if it is not in use.

Instruction and normal responses

Operation as booster charger

Connect the input cable to the DC source. Turn On the Power
switch, the “POWER ON” LED lights up. This indicates the device
is ready for charging. The “BULK” LED lights up. This means the
battery charger is beginning at the 1

st

stage of charging.
According to the battery type, adjust the charge setting dip switch
to get the optimum charge.

Connect battery to the DC output terminal. The smart booster
charger will perform the four stage charge automatically.

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.

In about 30 mins, the charger will
switch to 2

nd

stage, the “BULK” LED
remains ON, the battery is charged at
the maximum charging voltage. The
voltage level can be adjusted by the
switch No. 1,2 and 3.

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 maximum current to the battery.

At the 4

th

stage, the battery has been charged to about 85% of its
rated capacity. The “ABSORPTION” LED goes out and the
“FLOAT” LED lights up. Battery is now under “FLOAT” constant
charging. The charging voltage can be adjusted by the switch No.
4 and 5.

Operation as power supply

The device can be used as a Power Supply. Set the switch No. 6
to ON position. The device now operates as a power supply unit.
The bulk and absorption LED goes out. Switch No. 1,2 and 3 are
now disabled. The POWER ON and FLOAT LED light up. The
output voltage can be adjusted by the switch No. 4 and No.5.

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

Output Voltage Setting Table

SW No. Battery Selector Float Voltage Power Supply

1 ON OFF OFF
2 * ON OFF
3 * * ON
4 ON OFF OFF ON OFF OFF
5 OFF ON OFF OFF ON OFF
6 OFF OFF OFF OFF OFF OFF ON ON ON

12V

Output

14.8 14.6 14.2 13.8 13.5 13.2 13.8 13.5 13.2

24V

Output

29.6 29.2 28.4 27.6 27.0 26.4 27.6 27.0 26.4

Note: Dip-SW No. 1, 2 and 3 are switched off automatically (regardless it is on/off), when Dip-SW

No. 6 is switched on.

Float Volt

Bulk / Absorption Volt

Battery

Type

Dip Switch Setting

12V 24V 12V 24V

SLA / GEL

SW 3 ON, SW 1,2,4,5,6 OFF 13.2V 26.4V 14.2V 28.4V

AGM

SW 2,5 ON, SW 1,3,4,6 OFF 13.5V 27.0V 14.6V 29.2V

FLOODED

SW 1,4 ON, SW 2,3,5,6 OFF 13.8V 27.6V 14.8V 29.6V

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.