Voltech SBC-5925 User Manual

SBC-5925: 3 STAGE DC-DC CHARGER.
DESIGNED TO CHARGE AUX BATTERIES WITH AND WITHOUT AN IGNITION TRIGGER.
NOTE:
BATCH STARTING WITH SERIAL#s G5016
VEHICLES WITH A LOW VOLTAGE CHARGE ALTERNATOR WILL ONLY BE ABLE TO USE THE AUTO START MODE IF THE
CHARGE VOLTAGE TO THE UNIT IS ABOVE 13.4V (START CHARGE = 13.4V (26.8V) STOP CHARGE = 12.8V (25.6V))
UNITS FROM THIS BATCH CAN STILL BE USED IF INPUT VOLTAGE IS < 13.4V BY USING THE IGNITION MODE
NOTE:
BATCH STARTING WITH SERIAL#s 1516
VEHICLES WITH A LOW VOLTAGE CHARGE ALTERNATOR CAN USE BOTH MODES. IF USING AUTO START MODE, CHARGE
VOLTAGE SOURCE MUST BE ABOVE 12.8V (START CHARGE = 12.8V (25.8V) STOP CHARGE = 12.2V (24.6V))
10 SECOND DELAY FOR ALL SET POINTS FOR THIS BATCH.
SPECIFICATIONS:
• 9-32V input range (suitable for 12V or 24V input to 12V output but NOT 24V output):
• 70 mA current draw on input side when not charging and unit on in AUTO START MODE.
CHARGING STATUS LED
BULK MODE (FAST FLASH): VOLTAGE WILL KEEP RISING UNTIL ABSORPTION VOLTAGE IS REACHED.
SOFT START: (FAST FLASH): IF IN FLOAT, OUTPUT IS 1.15A UNTIL BULK CAN BE REACHED, THIS IS IF OUTPUT BATTERY IS
LOW OR THERE IS A HIGH LOAD.
ABSORPTION MODE (SLOW FLASH): VOLTAGE WILL STAY CONSTANT AT SET POINT AND CURRENT WILL DECREASE
FLOAT MODE (SOLID): VOLTAGE IS CONSTANT, AND CURRENT IS MINIMAL
LITHIUM FLOAT MODE (OFF): LITHIUM STOP CHARGE
NOTE: FLOAT VOLTAGE ONLY FOR BATCH STARTING WITH SERIAL#s 1516 IS 0.5V LOWER THAN TABLE FIGURES
Rated output power
20A at 13.8VDC
Efficiency
90%
Output (Charge) Voltage
Battery Type
Absorption
Float
Wet
14.4
13.3
AGM
14.3
13.2
GEL
14.0
12.9
CAL
15.1
14.0
LiFePO4
14.8
STOP
Size (L x W x H)
130 x 188 x 55mm
Weight
Approx. 870g

Voltech SBC-5925 Specifications

General

Brand	Voltech
Model	SBC-5925
Category	Battery Charger
Language	English

Summary

Specifications

Charging Status LED

Visual indicator for charging status and battery type selection.

Bulk Mode

Voltage rises until absorption voltage is reached.

Soft Start

Output 1.15A if battery is low or under high load.

Absorption Mode

Voltage is constant, current decreases.

Float Mode

Voltage is constant, current is minimal.

Lithium Float Mode

Lithium stop charge.

Output and Fault LEDs

Output Voltage LED Status

Describes LED states for output voltage: fast flashing, slow flashing, solid.

Fault LED Status

Indicates reasons for fault: no input voltage, out of range, or unit fault.

Operating Modes

Auto Start Mode

Unit operates based on input voltage, with specific start/stop voltages for different batches.

Ignition Mode

Unit operates when ignition signal is present, with low voltage disconnect/reconnect.

Connection and Setup

Connection Procedure

Steps for connecting input, output, and setting up the unit for operation.

Battery Selection

Procedure to select battery type using the Battery Select button and LEDs.

Terminal Block

Input and Output Terminals

Details of the INPUT (+/-) and OUTPUT (+/-) terminals.

Signal Terminals

Explanation of Ignition, GND, Alarm, and display signal pins.

Features and Protections

Product Features

Lists key features like 3-stage charging, input range, ignition control, and protections.

Protections

Details input under voltage, output over voltage, overload, and over temperature protections.

Troubleshooting

No Output Troubleshooting

Solutions for when the unit has no output, checking modes, connections, and voltage.

Fault Light Troubleshooting

Diagnosing the fault light based on input voltage and connection status.

Operational Issues

Output Voltage Pulsing

Explains pulsing for lithium settings and checks for correct battery type selection.

Unit Cuts In and Cuts Out

Addresses unit disconnection due to low input voltage and reconnection criteria.

No Battery Voltage on Display

Troubleshooting for display not showing battery voltage, checking connections.