Smartgen BAC1203VL User manual

BAC1203VL
BATTERY CHARGER
USER MANUAL
SMARTGEN (ZHENGZHOU) TECHNOLOGY CO., LTD.

Chinese trademark
English trademark
SmartGen —make your generator smart
SmartGen Technology Co., Ltd.
No.28 Jinsuo Road
Zhengzhou City
Henan Province
P. R. China
Tel: [phone]
0086-371-67991553/67992951
0086-371-67981000(overseas)
Fax: [phone]
Web: http://www.smartgen.com.cn
http://www.smartgen.cn
Email: [e-mail]
All rights reserved. No part of this publication may be reproduced in any material form (including
photocopying or storing in any medium by electronic means or other) without the written permission
of the copyright holder.
Applications for the copyright holder’s written permission to reproduce any part of this publication
should be addressed to Smartgen Technology at the address above.
Any reference to trademarked product names used within this publication is owned by their
respective companies.
Smartgen Technology reserves the right to change the contents of this document without prior
notice.
Table 1 Software Version
Date
Version
Note
2019-06-20
1.0
Original release.

BAC1203VL Battery Charger User Manual
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CONTENT
1. OVERVIEW........................................................................................................................................... 4
2. PERFORMANCE AND CHARACTERISTICS...................................................................................... 4
3. CHARGING PRINCIPLE ...................................................................................................................... 4
4. PARAMETERS CONFIGURATION...................................................................................................... 5
5. OPERATION......................................................................................................................................... 5
6. CASE DIMENSIONS ............................................................................................................................ 6
7. APPENDIX: PACK LIST........................................................................................................................ 7

BAC1203VL Battery Charger User Manual
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1. OVERVIEW
Fit with up-to-date power supply device, battery charger BAC1203VL is specially designed for
meeting the charging characteristics of lead-acid batteries and can be used for long-term supplement
(float) charging of 12V battery pack.
2. PERFORMANCE AND CHARACTERISTICS
It has the following characteristics:
1) Applies switch power supply structure, wide range and low input voltage, small size, light weight,
high efficiency rate;
2) Applies automatic two-stage charging process (first constant current, then constant voltage)
according to storage battery charging characteristics to prevent overcharging and significantly prolong
battery lifetime;
3) Short-circuit protection function;
4) Suitable for 12V storage battery with maximum charging current 3A;
5) LED display: Power indication and charging indication;
3. CHARGING PRINCIPLE
Figure 1 Charging Principle Diagram
Charging is performed according to the battery charging characteristics by two-stage method.
Charging type is ‘constant current type’, which means that when the battery terminal voltage falls below
the pre-set value, charging current will be constant; when the battery terminal voltage exceeds the
pre-set value, charging current will decrease with the rising of terminal voltage until the pre-set current
value is reached; then chargers automatically return to float mode. At this time charging current gets
smaller and smaller gradually. The terminal voltage also gets higher and higher to the pre-set value
gradullay. when the charging voltage gets over 13.5V, battery is fully charged in a degree. Afterwards
charging current only offsets battery's self discharging. long-term charging does no harm to the battery.
That is, charger can keep the fully charged status of the battery and also can ensure the usage life of
the battery.

BAC1203VL Battery Charger User Manual
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4. PARAMETERS CONFIGURATION
Table 2 Technical Parameters
Items
Contents
24V
Input
Characteristics
Nominal AC Voltage
AC (16~36)V
Max. AC Current
3.5A
No-load Power Consumption
<2W
AC Frequency
45Hz~65Hz
Max. Efficiency
80%
Output
Characteristics
No-load Output Voltage
13.8V, error±2%
Rated Charging Current
3.0A, error±5%
Max. Output Power
40W
Working
Condition
Working Temperature
(-30~+70)°C
Storage Temperature
(-40~+85)°C
Working Humidity
20%RH~93%RH ( No condensation)
Shape Structure
Weight
150g
Dimension
80mm×35.5mm×65mm (length*width*height)
5. OPERATION
Figure 2 BAC1203VL MASK
Table 3 Wire Connection Description
Mark
Function
Description
1
Output Positive
Connects battery positive; over BVR 1.5mm2multi-strand
copper line is recommended.
2
Output Negative
Connects battery negative; over BVR 1.5mm2multi-strand
copper line is recommended.
3
Ground Terminal
Ground connected terminal;
4
AC Input Terminal
Terminal L, N shall connect (6-36)V; over BVR 1.5mm2
multi-strand copper line is recommended.
5
Red Indicator
Charging Indicator
It illuminates when the charger is charging.
Green Indicator
Power Indicator
It illuminates when the charger is working.
NOTE1: When this is applied on genset, charging current shall produce voltage drop on charging line. so it is
recommended to separately connect charging line to battery terminals to prevent affecting sensor precision of collecting
samples.

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6. CASE DIMENSIONS
Figure 3 BAC1203VL Guide Rail Installation Size
Figure 4 BAC1203VL Screw Installation Size

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7. APPENDIX: PACK LIST
Table 4 Pack List
No.
Accessory
Quantity
Remark
1
BAC1203VL
1
2
Connecting Plug
1
3
Contact Pin
5
4
Quality Certificate
1
5
User Manual
1
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