OLYS DC12V-DC12V DC to DC Battery Chargers 12V Battery DC to DC Charger Instruction Manual

OLYS DC12V-DC12V DC to DC Battery Chargers 12V Battery DC to DC Charger

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Model

DC12V→DC12V

MODEL| INPUT → OUTPUT

Voltage      Voltage

| DC-DC

Charger current

| PV

Charger current

| Max.

PV Power

---|---|---|---|---
B2B1230| 12V→12V| 12V/30A|  |
B2B1260| 12V→12V| 12V/60A|  |
BS123020| 12V→12V| 12V/30A| 12V/20A| 250W
BS126030| 12V→12V| 12V/60A| 12V/30A| 430W
BS126045| 12V→12V| 12V/60A| 12V/45A| 620W

DC12V→DC24V

B2B122425| 12V→24V| 24V/25A|  |
---|---|---|---|---
BS12242530| 12V→24V| 24V/25A| 24V/30A| 820W

DC24V→DC24V

B2B242450| 24V→24V| 24V/50A|  |
---|---|---|---|---
BS24245030| 24V→24V| 24V/50A| 24V/30A| 820W

DC24V→DC12V

B2B241260| 24V→12V| 12V/60A|  |
---|---|---|---|---
BS24126050| 24V→12V| 12V/60A| 12V/50A| 685W

Function

This is a automatic DC-DC charger that can charge the main battery through the alternator and starter battery, or Solar panels charge the main battery (some models), DC-DC battery charger designed specifically for motorhomes, campers, ships, etc.

B2B Charge
It means to charge the main battery through alternator and starter battery. If it is not used in the vehicle, you can also use one battery to charge another battery

1. When the vehicle is running, the vehicle alternator can quickly charge the main battery through the charger at full power
2. The charger can charge the main battery according to the specified voltage and current by boosting or stepping down to ensure that the main battery is in accordance with the standard. charging curve charging

MPPT Solar Charge

1. The charger can increase the charging efficiency of the solar panel by 10-30% through MPP technology (search for the maximum power point)
2. The charger can charge the main battery according to the specified current by boosting or stepping down to ensure that the main battery is charged according to the standard charge curve charging
3. When the vehicle is not used for a long time, you can maintain a small trickle charge flow for the starter battery to ensure that the starter battery has enough electricity to start the vehicle

Other functions

1. Fully automatic charging: In order to continuously charge the battery, the controller can always be connected to the car battery. When the charging energy is stopped, such as the car stops driving, the battery will not discharge in the reverse direction.

2. Multiple protection functions: with overheating, overvoltage, short circuit, wrong connection protection

3. External temperature sensor: The ambient temperature will affect the parameters for charging the battery. The controller needs to perform parameter compensation according to the temperature of the battery, especially in places with large temperature changes. It is strongly recommended to install a temperature sensor.
   Note: Lithium batteries do not require temperature compensation

4. Lithium battery automatic wake-up function: When the lithium battery BMS is protected for some reason, the controller can automatically wake up the BMS and continue to charge the lithium battery

Battery life and efficiency

1. Ensure that the battery installation environment is ventilated and dissipated. The LiFePO4 battery is recommended to work in an environment above 0 degrees Celsius, otherwise the battery characteristics will drop a lot
2. The battery must be fully charged and stored, and it must be charged regularly to ensure that it is not stored under power, otherwise, it will affect the battery life
3. Lead-acid batteries that are completely empty must be charged as soon as possible, otherwise, it may cause permanent damage!
4. The lithium battery must have a BMS (Battery Management System). Try to avoid completely emptying the battery.

Connection

B2B series
B2B12-12 series B2B12-24 series B2B 24-12 series B2B 24-24 series

BS series
BS 12-12 series BS 12-24 series BS 24-12 series BS 24-24 series

Pin terminal description

Pluggable 6P terminal set: In the case of limited space, the terminal can be pulled out at any time to facilitate the connec2tion of the wire, and then re- insert itWire size: at least 0.75mm

• “T-T” : The main battery temperature sensor connection terminal, the sensor can be connected at will regardless of the positive and negative poles. The temperature compensation value is: -3mV/℃/2V. The temperature sensor is an optional accessory, if not connected, the controller defaults to the battery temperature at 25°C.
  Note: Lithium batteries do not have temperature compensation

• “Ss-, Ss+”: Used to connect cables for accurately measuring the battery voltage,which helps the controller to more accurately determine the current battery Voltage. Compensate for the voltage loss on the charging cable. If the voltage sensor is not connected or the connection is interrupted,
  It will switch to the normal operation of the measurement program with the charging cable, which does not affect the normal operation of the charger. If there are multiple batteries To use in parallel, connect SS- to the negative terminal of the first battery, and connect SS+ to the second or last battery The positive pole

• “D+”: B2B charging control signal, connect “D+” directly to the D+ signal output terminal of the alternator. If there is no D+ signal in alternator, the “D+” can be directly connected to the car ignition switch ON signal to Instead of the D+ signal on the alternator, if the D+ terminal is not connected, the B2B charging will not work

• “NC” : No function

• Temperature sensor (RTS)
  Connect the temperature sensor to the “T T” port, and connect the other end to the main battery to measure the real-time temperature of the main battery, ensure the temperature the connection position of the sensor is not interfered by any heat source (including motor heat, exhaust gas, heater, etc.), when the temperature sensor is not connected Or when the temperature sensor is disconnected, the controller will automatically switch to the default 25℃. The lithium battery has no temperature compensation function, so there is no need to connect a temperature sensor.
  NOTE: If the 0 ℃charging function is required, the temperature sensor must be connected

Lithium battery 0℃ charging function

DIP switch No. 1 is used to select whether the lithium battery needs to be charged at 0℃ select “ON”, it means stop charging below 0℃, select “OFF” means below 0℃ allow charging
NOTE: The external temperature sensor must be connected

Battery selection

Description
Dip switch number 2, 3, 4 to select batteryType

Warning

1. Before the product is used, it must be selected correctly battery type, wrong battery type may cause the battery to be broken
   2.Lithium batteries must have BMS, otherwise charging is not allowed

2. It is not allowed to change the battery type during the charging process,If necessary, the charger must be powered off

Charging parameters

Battery type| Equalizing| Boost| Float| HVD| LVD| Constant voltage charging time
---|---|---|---|---|---|---
GEL| –| 14.3V| 13.8V| 15.5V| 11V| 2h
Sealed| 14.6V| 14.4V| 13.5V| 15.5V| 11V| 2h
Flooded/AGM| 14.8V| 14.7V| 13.5V| 15.5V| 11V| 2h
LiFePO4|

–

| *14.4V/13.9V 14.2V/14.6V|

13.8V

|

15.5V

|

11V

|

2h

Lithium-ion (NCM)| –| 12.6V| 12.5V| 13.5V| 9.3V| 2h

Remarks:

1. The data is determined according to the battery type
2. The above data is 12V battery data, if the main battery is 24V, all parameters need to be multiplied by 2.

LED lamp

L1

|

Board Ⅰ

|

Red

| Short flashing:  Voltage is normal (1time/ 5 s) Fast flashing:       Over- voltage(HVD) (1time/ 1 s)

ON:                    Low-voltage(LVD)

L2

|

Battery full

|

Green

| Off:                    No charging

Short flashing: Boost charging stage (1time / 5S) Fast flashing:  Constant voltage stage (1 /1S) ON:            Battery full

L3

|

Charge

|

Yellow

| Off:                    Not charging

Short flashing: Lithium battery does not charge

below 0℃ (1time/2S)

Fast flashing: Over-heat inside the controller (1 time/S) ON:      Charging (B2B charging or PV charging)

Slow flashing: Reduce current charging (battery

temperature>50℃ or <-20℃) (4s ON and 1s OFF)

L4

|

Start Ⅱ

|

Green

| Off:                  No D+ signal, no charging Flashing:        Start battery voltage < 11V (1 /5S)

(B2B mode: <10.8 stop charging,

12.5V, resume charging Fast flashing: Start battery voltage>16V, (1time/S)

ON:                   Start battery voltage is normal (11V-16V)

Remarks : 24V battery, parameter valueneeds to be multiplied by 2

L5

|

Solar

|

Green

| OFF:                   B2B mode

Short flashing:  PV voltage <Board battery voltage

(1time / 5s)

Fast flashing:  PV voltage >50V (1 time/ 2 s) ON:               PV voltage is normal

Charging process

1. Boost charge stage: Charge according to the maximum current until the battery voltage reaches the boost voltage. Boost voltage refer to charging parameters.

2. Constant voltage charge stage: When the battery voltage rises to the boost voltage, the charging current begins to drop, constant voltage charging time is 2hours.
   When the battery is first charged, the voltage >12.6V, Charge without constant voltage for 2 hours, directly float charge

3. Float charge stage : Low current to maintain float voltage

Protection

Board  battery over-voltage

| ● Battery voltage>HVD ,Charge off

● Battery voltage> boost charge voltage +0.2V, continuous10 seconds,charge off

● Buzzer alarm:Di-Di-Di,continuous 1 minute

---|---

Board battery Low- voltage protection(LVD)

| Battery voltage< LVD

Buzzer alarm: DiDi-DiDi-DiDi, continuous 1 minute

Starter battery low- voltage

| ● 12.3V-10.8V(12V)/24.6V-21.6V(24V)

Reduce charging current

● <10.8V(12V)/21.6V(24V)， B2B stop charge

PV over- power (Only BS series)| Solar panel limit Max.power

PV over- voltage(Only BS series)

| PV voltage>50V. PV charge OFF

Buzzer alarm: DiDiDi- DiDiDi, continuous 1 minute

B2B charge，over- power protection| Limit the maximum charging current and maximum

power (current and power view Model specification table)

Reverse protection

（Battery，Solar，Start  battery)

| 1.Board battery reverse : Blown fuse 2.Start battery reverse: Blown fuse

3.Solar reverse:      No effect, self-damage increased

Overheating protection

/ Restore

| ● temperature> 85℃: Stop charging, Drop to 60 ℃: resume charging.

● temperature> 75℃， Reduce current charging The temperature returned to 65℃, returned to rate current charging

Buzzer alarm: DiDi-Di-DiDi-Di, continuous 1 minute

System voltage error

|

●  12V battery >16V

●  24V battery >32V

●   Buzzer alarm:  DiDiDi-DiDiDi-DiDiDi, 1minute

Parameter

80-100AH
B2B Charging  operation|  |  |  |  |
Start battery voltage range| 10.5-16V| 10.5-16V| 10.5-16V| 21～32V| 21～32V
Max. charge power| 390W| 780W| 650W| 1300W| 780W
Max. chrge current| 30A| 60A| 25A| 50A| 60A
” D+” signal voltage| 8-16V| 8-16V| 8-16V| 16-32V| 16-32V
MPPT solar charge controller|  |  |  |  |

685W

40A

50V

50A

no function

(only BS series)|  |  |  |
Max. PV power| 250W| 430W/620W| 820W| 820W
Max. PV charge current| 14A| 24A/35A| 24A| 24A
Max. Open circuit voltage| 50V| 50V| 50V| 50V
Board ⅠMax.charge current| 20A| 30A/45A| 30A| 30A
PV charges the start battery| 0-5A| 0-5A| 0-5A| 0-4A
Temperature compensation| -3mv/℃/2V| -3mv/℃/2V| -3mv/℃/2V| -3mv/℃/2V| -3mv/℃/2V
“TR”signal| 12V/1A| 12V/1A| NC| NC| NC
Main battery temperature sensor”T T”| YES| YES| YES| YES| YES
Main battery voltage detection”SS-,SS+”

Stand-by current

| YES

30±2mA

| YES

32±2mA

| YES

16±2mA

| YES

16±2mA

| YES

32±2mA

Weight| 1.44kg| 1.44kg| 1.6kg| 1.6kg| 1.6kg
Operating temperature| -20-50℃| -20-50℃| -20-50℃| -20-50℃| -20-50℃
Demension| 190×194×70 mm| 190×215×70 mm

Optional accessories

|

Meter(MT-2)

Bluetooth Dongle(BT10) Temperature sensor( TRS)

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