SmartGen BAC2405 Battery Charger User Manual

BAC2405 Battery Charger
User Manual

Table 1 Software Version

Version

| Date|

Note

---|---|---
1.0| 2014-03-14| Original release.
1.1| 2017-11-09| Add “BAC2405 TROUBLESHOOTING”; Update” CASE DIMENSIONS”; Change “Efficiency Parameter” to “Max. Efficiency”.
1.2| 2021-04-13| 1. Modify the voltage range of “BAC2405 Mask Description”;
2. Upgrade the company information, font, and format of the header and footer.
1.3| 2022-06-15| Update the Logo of SmartGen.

SUMMARY

Fit with an up-to-date power supply device, float charger BAC2405 is specially designed to meet the charging characteristics of the lead-acid engine starter batteries and can be used for long-term float charging of 24V lead-acid batteries.

PERFORMANCE AND CHARACTERISTICS

• Switch power supply structure, wide input alternating voltage range, small size, lightweight, high-efficiency rate;
• Automatic two-stage charging process (first constant current, then constant voltage) carried out according to storage battery charging characteristics to prevent  overcharging and significantly prolong battery lifetime;
• Built-in current protective circuit for short-circuit protection and reverse connection protection;
• Charging voltage and current can be adjusted via potentiometer on the spot;
• Suitable for 24V storage battery and the rated current is 5A;
• LED display: Power indication and charging indication.

CHARGING PRINCIPLE

Fig.1- Charging Principle

Charging is performed according to the battery charging characteristics using a two-stage method.
The charging type is ‘constant current type’ which means that when the battery terminal voltage falls below the pre-set value, the charging current will be constant; when the battery terminal voltage exceeds the pre-set value, the charging current will decrease with the rising of the terminal voltage until the pre-set current value is reached; then Chargers automatically return to float mode. As soon as the charging current value falls below 0.5A and the constant voltage value is reached, the battery is basically charged (the charging indicator will extinguish). After that charging current will only neutralize the battery self-discharge. Even long-term charging cannot harm the battery, as the charger can keep the battery fully charged and so guarantee a long life of the battery.

SPECIFICATION

Table 2 Specification

Items

| Contents|

Parameters

---|---|---

Input
Characteristics

| Nominal AC Voltage| AC (100~240)V
Max. AC Voltage| AC (90~280)V
AC Frequency| 50Hz/60Hz
Max. Active Power| 164W
Max. Current| 2.5A
Max. Efficiency| AC 110V| AC 220V
84%| 87%
No-load Power
Consumption| <3W
Output Characteristics| No-load Output Voltage| 27.6V (Error±1%)
Rated Charging Current| 5A (Error±2%)
Max. Output Power| 135W

Insulating Property

| Insulation Resistance| Between  input  and  output,  input  and shell both are: DC500V 1min RL≧500MΩ
Insulation Voltage| Between  input  and  output,  input  and shell both  are: AC1500V 50Hz 1min; leakage current: IL≦3.5mA

Working Condition

| Working Temperature| (-30~+55)°C
Storage Temperature| (-40~+85)°C
Working Humidity| 20%RH~93%RH ( No condensation)

Shape Structure

| Weight| 0.66kg
Dimension| 143mm×96mm×55mm (lengthwidthheight)

EFFICIENCY CURVE

VOLTAGE/CURRENT REGULATION

6.1 VOLTAGE REGULATION
If adjust voltage is on-site, the battery needs to be disconnected with the battery charger, and then adjust the voltage potentiometer (VOLT) to the appropriate value while measuring the charger output voltage.
6.2 CURRENT REGULATION
After connecting the output port to the storage battery, measure the charging current under 25.0V charging voltage, and then adjust the current potentiometer (AMP) to the appropriate value. Current also can be estimated according to the scale of the current potentiometer.

OPERATION

7.1 MASK DESCRIPTION

• Connect terminals L and N to alternating voltage 220V, using BVR 1mm multi-strand copper line.
• Connect B+ and B- to battery positive and negative using multi-strand BVR1.5mm copper wires.
• POWER: power supply indicator, illuminated when the charger is operating normally.
• CHARGING: charging indicator, is illuminated when the charging current exceeds 0.5A while extinguished when the charging current has fallen below 0.5A.
• VOLT: charging voltage regulator-potentiometer
• AMP: charging current regulator-potentiometer
• FUSE: output fuse; rated current: 10A. If connected in the wrong way, the fuse will be burnt out and then voltage free. In this case, connect cables correctly, and replace the fuse and the system will continue to operate normally.

NOTE:

1. Because there is a diode and current-limiting circuit inner the charger, it can be used together with a charging generator, and there is no need to disconnect the charger when cranking
2. During genset is running, a high current will cause a voltage drop in the charging line, so recommend separately connecting to the battery terminal to avoid disturbance on sampling precision.

7.2 BAC2405 TROUBLESHOOTING
7.2.1 FAULT DIAGNOSIS
The output terminal of the battery charger short circuit or battery reverse connection may blow the charger output fuse. In that case, after connecting the AC power supply, charger green  LED lights up but the output terminal is without voltage output, and then remove the output fuse tube to visually observe whether the fuse is blown or not, if condition permits, a multimeter can be used to measure the fuse status.
a) If the output terminal 10A fuse is blown, users only need to change the same capacity fuse.
b) If the output fuse isn’t blown or the battery is without outputting after changing the fuse, the battery needs depot repair.
c) Fuse burn emergency method: using conductive metal wire short connected burnt fuse, and then change the fuse later.

7.2.2 PROCEDURES FOR CHANGING FUSE
a) Press hard on the slotted screwdriver, screw counter-clockwise and then take out the
fuse.( improper operation or over-tightening may damage the block)
b) Put a new fuse into the block, press the slotted screwdriver, and screw clockwise.

CASE DIMENSIONS

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