DAYTON AUDIO LBB-5Sv2 Lithium Battery Charger Board or Module User Manual
- June 9, 2024
- DAYTON AUDIO
Table of Contents
DAYTON AUDIO LBB-5Sv2 Lithium Battery Charger Board or Module
Dayton Audio LBB-5Sv2
- Batteries sold separately: 18650 x5
- Use only flat top 18650 batteries, and not 18650 batteries with a button top on the positive side
- Package includes
- LBB-5Sv2 x1
- 20in stranded power cable x1
- 8.5in stranded 4-pin plug
Power Supply
- Between 5 VDC and 24 VDC, center positive
- Minimum 2A capable recommended
- 2.1 x 5.5mm center positive coax plug
Installing Batteries
- Plug in all wiring harnesses necessary for project before installing batteries
- Match the + side of the battery with the + marker on the LBB-5Sv2
- If a battery’s polarity is not marked, check for vent holes or a dimple around the rim of the positive side
- You must plug in the power supply to activate the battery board
- If a battery goes bad, the board will cease all output
Charging Tips
- The LBB-5Sv2 uses a BMS (Battery Management System) to monitor the voltage of each cell individually in order to charge them to the same capacity
- If one battery is significantly lower in charge than the others, it may take days for all batteries to reach full capacity
- Higher level batteries will be slowly drained before all cells are charged together
- It is necessary to start with all new batteries with the same mAh capacity
- Remove the batteries before storing LBB-5Sv2 for a prolonged amount of time
- The DIP switches on S2 control the charge rate by restricting current. If you notice your power supply beginning to get hot, it could be shortening the life of your batteries. Check the setting of your dip switches. The DIP switches must be set to one of the following settings:
| Switch positions | Charge current |
|---|---|
| OFF-OFF-OFF-OFF | 0.50A |
| ON-OFF-OFF-OFF | 0.60A |
| ON-ON-OFF-OFF | 0.70A |
| ON-ON-ON-OFF | 0.80A |
| ON-ON-ON-ON | 0.90A |
Dayton Audio LBB-5Sv2
| J2 Pin | Value |
|---|---|
| 1 | VIN |
| 2 | GND |
| J3 Pin | Value |
| --- | --- |
| 1 | VIN |
| 2 | VIN |
| 3 | GND |
| 4 | GND |
| 5 | BATT |
| 6 | BATT |
| J5 Pin | Value |
| --- | --- |
| 1 | VIN |
| 2 | GND |
| J7 Pin | Value |
| --- | --- |
| 1 | LED+ |
| 2 | LED- |
| J6 Pin | Value |
| --- | --- |
| 1 | LED+ |
| 2 | LED- |
| J16 Pin | Value |
| --- | --- |
| 1 | POWER |
| 2 | SWITCH |
| 3 | LED4 |
| 4 | LED3 |
| 5 | LED2 |
| 6 | LED1 |
| (J21) (J27) Pin | Value |
| --- | --- |
| 1 | BATT |
| 2 | BATT |
| 3 | GND |
| 4 | GND |
| (J19) Pin | Value |
| --- | --- |
| 1 | BATT |
| 2 | BATT |
| 3 | BATT |
| 4 | GND |
| 5 | GND |
| 6 | GND |
| J22 Pin | Value |
| --- | --- |
| 1 | BATT |
| 2 | GND |
Output Current Capabilities
How much current your project draws will be the limiting factor when using any
battery pack. Do not connect project directly to batteries, use only the
voltage output ports of the LBB-5Sv2; otherwise over-current protection will
not function. Use the following guidelines to determine which LBB-5Sv2 output
ports will work best for your project:
- Higher Current Applications – Use J19 or J22 when a high amount of current is needed for extended periods of time
- Examples of high current uses: larger amplifier boards, LED arrays, large DC motors
- Lower Current Applications – Use J21 or J27 when less current is needed
- Examples of lower current uses: small/medium amplifier boards, smartphone battery bank, PC fans
- Maximum Current – The LBB-5Sv2 is capable of supplying 5A total from all combined outputs at 21VDC, for a combined output of 105W
Dayton Audio LBB-5Sv2
- (J1) 5 – 24 VDC power input
- (J2) 5 – 24 VDC power input for bare wire
- (J3) Multifunction expansion port, see page 5
- (J5) 15 – 24V Solar panel power input
- (J19) 24 VDC output port
- (J22) 21 VDC output port
- (J21) 21 VDC output port
- (J27) 21 VDC output port
- LED charging indicator
- a. ON = Charging
- b. OFF = Fully charged
- ( External charge indicator LED, see page 5
- ( External LED indicator for power status, see page 5
- Power indicator status LED
- a. ON = Power
- b. OFF = No power
- ( Multiple external LED Indicator port, see page 5
- Battery level LED indicators
- Short press S1 to display battery level readout on LEDs
- 4 Position DIP switch to control charging current, see table under Charging Tips on page 2
J3 – Feature extension port
The feature extension port is a part of what makes the Dayton Audio line of
battery modules so versatile. Being mindful of the pinout on page 3,
accessories can be plugged into J3 to expand the options the battery board
provides. The Dayton Audio LBB-5EB Expansion Board is an easy and effective
way to add a 5VDC output to your project. This will allow you to charge
smartphones and power other 5VDC devices. There is also a DC input jack to
charge the LBB-5Sv2 directly through the LBB-5EB. The LED on the LBB-5EB
remains on, so if the LED draining the batteries is of concern, it can be
removed. J3 power specification: 5VDC, 2A maximum output
J6 – External power port indicator LED
J6 can be used as an external indicator to display the ON/OFF status off the
battery board. Following the pinout on page 3, an LED can be connected such
that an ON status indicates the board is active and an OFF status indicates
the board is inactive. This external LED will serve the same purpose as D10 on
the board just below J6.
J7 – External charge indicator LED
J7 is used as an external indicator to display the charging status of the
battery board. ON indicates the board is charging, OFF indicates the board is
not charging, or has completed charging if the board is plugged in. This
serves the same function as D13 on the board just above J7.
J16 – External battery status indicator LEDs
J16 can be used as an external indicator to display the battery level status
of the board, serving the same purpose as D16, D17, D18, D19, just below J16.
Following the pinout on page 3, 4 LEDs and a momentary switch/button can be
connected such that the battery level is displayed by the 4 LEDs. Pressing the
momentary switch/button will illuminate the number of LEDs corresponding the
status of the battery
- LED = 25%
- LEDs = 50%
- LEDs = 75%
- LEDs = 100%
Troubleshooting
Battery board not supplying power – Remove then replace one battery (new battery not necessary) and momentarily plug in your power supply. This will restart the charging circuit and will reactivate the battery supply LBB-5EB expansion not working – ensure the LBB-5EB is plugged into the expansion socket (J3) and not the external battery charge status socket
Dayton Audio LBB-5Sv2
Note : The Dayton Audio LBB-5Sv2 is an independent battery holder board
and its design does not work with Dayton Audio KAB board’s built-in charge
circuit. Plug the LBB-5Sv2 into the two wire DC input on the KAB boards or use
Dayton Audio battery board KAB-BE with Dayton Audio KAB Bluetooth amp boards
Specifications
- Output Voltage : 21 VDC @ 5A Max (combined outputs)
- Supply : 5 to 24 VDC, at least 1.5A recommended
- DC coax jack size : 2.1 x 5.5mm center positive
- Dimensions : 4.8″ W x 3.6″ D x 1.38″ H
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