ECTIVE BB25 Battery Booster
Overview
Congratulations and thank you for purchasing an ECTIVE Battery Booster!
This powerful charge converter allows for the on-board battery to be fully charged while driving. With it, one 12 or 24 V battery may be used to charge another 12 or 24 V battery („B2B“). It is particularly useful in RVs, campers, boats etc.
ECTIVE SBB models also feature an integrated MPPT solar charge controller which allows you to charge a battery with a solar panel. With precise charging characteristics, it automatically increases and decreases the voltage to the required levels in order to optimally charge the battery.
Furthermore, the Battery Booster completely compensates for line losses and significant voltage fluctuations of the alternator, which frequently occur in vehicles. Supplied 12 or 24 V consumers are also protected from overvoltage and voltage fluctuations.
Please read this manual before use.
ECTIVE stands for power supply solutions at an unbeatable price-performance ratio.
Visit our website to explore more of our brand and products!
ECTIVE.DE
Important Safety Advice
To prevent injury and to avoid damage to electrical equipment, please follow the following safety advice before operating the device. Use the ECTIVE Battery Booster only…
- with lead-acid, AGM, Gel or LiFePO4 batteries of the specified nominal voltage.
- with the specified cable cross-sections for inputs and outputs.
- with fuses of the specified strength near the battery to protect the wiring between the batteries and DC-DC converter connections.
- in a well-ventilated room, protected from rain, moisture, condensation, dust and aggressive battery gases.
Never use the ECTIVE Battery Booster in places where there is a risk of gas or dust explosions!
Keep batteries cool (LiFePO4 batteries preferably above 0°C). Choose an appropriate location for installation.
Store batteries fully charged and recharge them periodically. Recharge completely discharged batteries immediately.
When using a LiFePO4 battery, make sure it features a BMS and safety circuit. Avoid completely discharging a battery.
List of Models
The family of ECTIVE BB battery boosters comprises various models for different voltages of the supply and start batteries:
- 12 V zu 12 V
- 12 V zu 24 V
- 24 V zu 24 V
- 24 V zu 12 V
Please check the label on your device before use and only operate the battery booster with batteries of the correct voltages!
| Eingang (V) zu Ausgang (V) | DC-DC Ladestrom | SolarLadestrom | Max. Solarstrom | |
| BB30 | 12 V → 12 V | 12 V | 30 A | – | – |
| BB60 | 12 V → 12 V | 12 V | 60 A | – | – |
| SBB30 | 12 V → 12 V | 12 V | 30 A | 12 V | 20 A | 250 Wp |
| SBB60 | 12 V → 12 V | 12 V | 60 A | 12 V | 30 A | 430 Wp |
| BB25 | 12 V → 24 V | 24 V | 25 A | – | – |
| BB50 | 24 V → 24 V | 24 V | 50 A | – | – |
| BB60 | 24 V → 12 V | 12 V | 60 A | – | – |
| SBB25 | 12 V → 24 V | 24 V | 25 A | 12 V | 30 A | 820 Wp |
| SBB50 | 24 V → 24 V | 24 V | 50 A | 24 V | 30 A | 820 Wp |
| SBB60 | 24 V → 12 V | 12 V | 60 A | 24 V | 50 A | 685 Wp |
| BB30 Compact* | 12 V → 12 V | 12 V | 30 A | – | – |
*Note: The ECTIVE battery booster with a charging current of 30A is also available in the ist in der „Compact“ variant which is smaller and offersa slightly reduced scope of functions. Please check the label on your device to find out if your device is the standard or compact version and observe the differing technical specifications and connection plan.
Installation
- Install the Battery Booster near the board supply battery I (for short charging cables) on a clean, even and hard mounting surface. Make sure the device is protected from water, humidity, corrosion and aggressive battery gases. The unit can be installed in any position. • During operation, the device‘s fan will cool the Battery Booster.
For efficient cooling, make sure that there is at least 10cm of clear space in front of the vent - Choose the appropriate cable specifications, length and fuse specifications for installation.
- Caution! A reverse connection of the battery will cause serious damage to the equipment!
- When using a Temperature Sensor, make sure that it is not affected by any external sources of heat.
Please note the following diagrams to ensure the correct connections for your device.
ECTIVE BB30
26 ECTIVE BB & SBB
ECTIVE BB25, BB30, BB50, BB60
ECTIVE SBB25, SBB30, SBB50, SBB60
Recommended Cable Cross-Sections, Cable Lengths and Fuse Capacities
BB25, BB30
| 2.5mm2 | 4mm2 | 6mm2 | 10mm2 | |
| Cable length “+Start II” | – | – | up to 5m | up to 8m |
| Cable length with insulated construction “-Batt” | – | – | up to 5m | up to 8m |
| “Fuse II” cable protection | – | – | 50A | 50A |
| Cable length “-Com” to “Board I” | – | 0.5 to 1.5m | 1.0 to 2.5m | 2.0 to 4.0m |
| Cable length “+ Board I” | – | 0.5 to 1.5m | 1.0 to 2.5m | 2.0 to 4.0m |
| “Fuse I” cable protection | – | 40A | 40A | 40A |
BB50, BB60
| 4mm2 | 6mm2 | 10mm2 | 16mm2 | 25mm2 | |
| Cable length “+Start II” | – | – | – | up to 7m | up to 10m |
| Cable length with insulated construction “-Batt” | – | – | – | up to 7m | up to 10m |
| “Fuse II” cable protection | – | – | – | 100A | 100A |
| Cable length “-Com” to “Board I” | – | – | 0.5 to 2.0m | 1.5 to 3.0m | 2.5 to 5.0m |
| Cable length “+ Board I” | – | – | 0.5 to 2.0m | 1.5 to 3.0m | 2.5 to 5.0m |
| “Fuse I” cable protection | – | – | 80A | 80A | 80A |
SBB25, SBB30
| 2.5mm2 | 4mm2 | 6mm2 | 10mm2 | |
| Cable length “+Start II” | – | – | up to 5m | up to 8m |
| Cable length with insulated construction “-Batt” | – | – | up to 5m | up to 8m |
| “Fuse II” cable protection | – | – | 50A | 50A |
| Cable length “-Com” to “Board I” | – | 0.5 to 1.5m | 1.0 to 2.5m | 2.0 to 4.0m |
| Cable length “+ Board I” | – | 0.5 to 1.5m | 1.0 to 2.5m | 2.0 to 4.0m |
| “Fuse I” cable protection | – | 40A | 40A | 40A |
| Cable lengths solar panels | up to 4.5m | up to 6m | up to 10m | up to 16m |
SBB50, SBB60
| 4mm2 | 6mm2 | 10mm2 | 16mm2 | 25mm2 | |
| Cable length “+Start II” | – | – | – | up to 7m | up to 10m |
| Cable length with insulated construction “-Batt” | – | – | – | up to 7m | up to 10m |
| “Fuse II” cable protection | – | – | – | 100A | 100A |
| Cable length “-Com” to “Board I” | – | – | 0.5 to 2.0m | 1.5 to 3.0m | 2.5 to 5.0m |
| Cable length “+ Board I” | – | – | 0.5 to 2.0m | 1.5 to 3.0m | 2.5 to 5.0m |
| “Fuse I” cable protection | – | – | 80A | 80A | 80A |
| Cable lengths solar panels | up to 4m | up to 6m | up to 10m | up to 16m | – |
Connections: Sensor Inputs and Terminals
Plug-in Terminal Strip: In case of limited space, the strip can be withdrawn and reattached at any time for easy cable connections
T T Measuring input for the temperature sensor of the supply battery „Board I“ Connect a temperature sensor to the terminals „T T“ (any polarity) Make sure to follow any instructions relating to your temperature sensor
Ss- and Ss+ A cable sensor allows for more a accurate measuring of the battery voltage This helps the Battery Booster to compensate the voltage loss on the charging cable If no voltage sensor is connected, or the connection is interrupted, the default measurement program will
be used If multiple batteries are used in parallel, connect SS- to the negative pole of the first battery, and SS + to the positive
pole of the second or last battery
D+ Control input of the dynamo for the charging converter (B2B- Booster) operation ON / OFF: Connect the terminal „D+“ directly to the existing signal in the vehicle The „D+“signal is preferably to be used for the „active dynamo“ If the D+ signal does not exist in the vehicle, the signal „Ignition ON“ can be used for unit control Attention:
When the motor is not running, the starter battery might be discharged!
Battery Temperature Sensor Connecting an external temperature sensor to the „TT“ port, allows for a real-time measurement of the main battery‘s temperature Ensure that this measurement is not distorted by any other heat sources, such as motor heat, exhaust, heater, etc If no temperature sensor is connected or the connection is interrupted, the Battery Booster assumes a default temperature of 25°C
NC No function
30 ECTIVE BB & SBB
Battery Type Switches
Use the DIP switches 2, 3 and 4 on the ECTIVE Battery Booster to select the correct battery type for „Board I“. Set the correct battery type before use. Never change the battery type while the device is operating.
Battery Type
 |  |  |  |
| Gel Boost voltage: 14 3 / 28 6 V | Sealed Boost voltage: 14 4 / 28 8 V | Flooded/AGM Boost voltage: 14 7 / 29 4 V | LiFePO4 Boost voltage: 14 4 / 28 8 V |
 |  |  |  |
| Lithium-Ion (NCM) Boost voltage: 12 6 / 25 2 V | LiFePO4 Boost voltage: 13 9 / 27 8 V | LiFePO4 Boost voltage: 14 2 / 28 4 V | LiFePO4 Boost voltage: 14 6 / 29 2 V |
Charging Lithium Batteries below 0°C
DIP switch 1 allows you choose whetherLithium Batteries are to be charged at temperatures below 0°C Note: an external temperature sensor must be connected!
 |  |
| No charging below 0°C Temperature < 0°C: Stop charging Temperature > 3°C: Resume charging | Charging permitted below 0°C Temperature – 20°C to 0°C: Reduce charging current Temperature > 3°C: Resume normal charging |
Caution: When using a Lithium Battery, make sure it has a BMS!
ECTIVE BB 30
Please observe the specific DIP switches for the „Compact“ variant of the battery booster BB30
 |  |  |  |  |
| Gel | Lead Acid | AGM | LiFePO4 | Lithium- Ion (NCM) |
32 ECTIVE BB & SBB
Battery Charging Parameters
| Gel | Sealed | Flooded/ AGM | LiFePO4 | Lithium-Ion (NCM) | |
| Equalized charge | – | 14.6V | 14.8V | – | – |
| Boost charge | 14.3V | 14.4V | 14.7V | 14.4 / 13.9V* 14.2 / 14.6V* | 12.6V |
| Float charge | 13.8V | 13.5V | 13.5V | 13.8V | 12.5V |
| HVD | 15.5V | 15.5V | 15.5V | 15.5V | 13.5V |
| LVD | 11V | 11V | 11V | 11V | 9.3V |
| Constant voltage charging time | 2h | 2h | 2h | 2h | 2h |
*The data is determined according to the battery type Above values valid for 12V batteries If the main battery is 24V, all parameters need to be to be multiplied by 2
LED Indicators
| Color | Meaning | |
| Board I | Red | Slow flashing (1× in 5 seconds): Main battery voltage is normal Fast flashing (1× per second): Main battery over-voltage ON: Main battery Low-voltage |
| Battery full | Green | OFF: no charging Slow flashing (1× per 5 seconds): Boost charging Fast flashing (1× per second): Constant voltage charging ON: Battery full |
| Charge | Yellow (BB30 Compact: Green) | OFF: no charging Short flashing (1× per 2 seconds): Lithium Battery not charging because temperature is below 0°C Fast flashing (1× per second): Controller overheating Slow flashing (4 seconds on, 1 second off): Reduced charging current because temperature >50°C or <-20°C ON: charging (B2B or solar charging) |
| Start II | Green (BB30 Compact: Yellow) | OFF: No D+ signal, no charging Flashing (1time/5 second): Start battery voltage < 11V (During B2B charging, when the voltage of the starting battery is < 10.8V, the charging will stop. Once the voltage is, 12.5V charging resumes. ON: Start battery voltage normal (11V to 16V) |
| Solar (only SSB models) | Green | OFF: B2B charging Slow flashing: PV voltage too Low (lower than the main battery) Fast flashing (1× per 2 seconds): PV overvoltage (> 50V) ON: PV voltage normal |
34 ECTIVE BB & SBB
Operating Instructions
B2B Mode (Battery to Battery)
In B2B Mode the alternator and starter battery charge the main battery. When the ignition of the Vehicle is ON, the generator starts to work and has a D + signal output to the Battery Booster. The starting battery will start to charge the main battery. When the vehicle stops, and the generator stops working as well, the D + signal is interrupted. The B2B charging stops.
If the start battery voltage is below 10.8V, in order to prevent the start battery voltage from being too low and affecting the normal start of the vehicle, B2B charging stops. When the start battery voltage rises to
12.5V, B2B charging starts automatically.
During B2B-charging, the solar charging stops automatically.
In case B2B mode is not working, please check if…
• the D + signal is normal (D + signal voltage must be > 8V)
• the starter battery voltage is > 10.5V. If the battery voltage is low, increase the generator speed to charge the starter battery
MPPT Solar Charging Mode (SBB Models)
ECTIVE SBB Battery Boosters feature an integrated MPPT solar charging controller with a higher efficiency than conventional solar controllers. When the vehicle stops running and there is no D + signal, the solar
charging will automatically begin if there is sufficient sunlight. If the supply battery (Board I) is fully charged or in the state of float charging, the excess solar energy is also charged into the starter battery (Start II: max. charging current 5 A). This function ensures that the vehicle can be started even after long periods of standing.
- In case MPPT solar charging is not working, please check if….
- the D + signal is less than 8V. Solar charging only runs when B2B charging is not running.
- the positive and negative poles of the solar panel are correct. The open circuit voltage of the solar panel must be < 50V. The battery voltage must be < 15.5V.
- the solar panel charging current does not reach the specification value
- the main battery is almost fully charged.
- the connection diameter of the solar panel is too small. This may affect the charging current.
- the solar panel gets sufficient sunlight.
36 ECTIVE BB & SBB
Charging Process
Boost Charge
Charges according to the maximum current until the battery voltage reaches the constant voltage charging voltage.
Constant Voltage Charge
When the battery voltage has risen to the appropriate level, the current begins to fall and the constant voltage charge mode is begun. The constant voltage charging time is 2h. When the battery voltage is above 12.6V, the constant voltage charging is endend and the floating charge is directly charged
Float Charge
After the constant voltage charge is completed, the float charge begins and maintains the battery charge without over charging.
Protective Features
Main Battery Over-Voltage
If battery voltage is above the HVD: charging is interrupted. If battery voltage is greater than boost charge voltage +0.2V for 10 continuous seconds, charging is interrupted. A buzzer alarm will sound for one minute (— — —).
Main Battery Low-Voltage Protection
If the battery voltage is below LVD, a buzzer alarm will sound for one minute (– — –).
Starter Battery Low-Voltage Protection
B2B charge is interrupted if the starter battery‘s voltage is below:
12 V battery: < 10.8 V
24 V battery: < 21.6 V
B2B charge current is reduced if the battery‘s voltage is:
12 V battery: 12.3 V – 10.8 V
24 V battery: 24.6 V – 21.6 V
B2B Charge Over-Power Protection
Max. current 60A, max. power: 780W
Reverse Protection
Main battery: Blown fuse
Start battery: Blown fuse
PV reverse: no effect
Overheating Protection
If the temperature is above 85°C, charging is interrupted. It is resumed
when the temperature drops to 60°C.
If the temperature is above 75°C, the B2B charging current is reduced.
When the temperature drops to 65°C, B2B mode resumes charging normally. A buzzer alarm will sound for one minute (– — — —).
PV Over-Power Protection
Solar panel limit: Max power.
PV Over-Voltage Protection
If PV voltage is greater than 50V, PV charge is interrupted.
A buzzer alarm will sound for one minute (— —).
System Voltage Error
12 V battery: > 16 V
24 V battery: > 32 V
A buzzer alarm will sound for one minute (— — —).
38 ECTIVE BB & SBB
Technical Specifications
| BB30, SBB30 | BB60, SBB60 | |
| Main Battery “Board I” | ||
| Lead-Acid, Gel, AGM nominal voltage | 12 V | |
| LiFePO4 nominal voltage | 12,8 V | |
| Lithium-Ion (NCM) nominal voltage | 11,1 V | |
| Recommended capacity | 45 to 280 Ah | 90 to 560 Ah |
| Vehicle Starter Battery “Start II” | ||
| Vehicle Starter Battery Nominal Voltage | 12 V | |
| Min. Battery Capacity, recommended | 60 Ah | 100 Ah |
| B2B Charging operation | ||
| Input voltage range “Start II” ,”D+” controlled | 10,5 to 16 V | |
| Maximum charging power | 390 W | 780 W |
| “Board” max. charge current | 30 A | 60 A |
| Activation Control Input “D+” | 8 to 16 V | |
| MPPT Solar Charge Controller (nur SBB) | ||
| Max. PV-Leistung (P max.) | 250 W | 430 W |
| Max. PV-Strom | 15 A | 26 A |
| Max. Leerlaufspannung (Voc) | 50 V | |
| “Bord I” max. Ladestrom | 20 A | 30 A |
| “Bord I” Ladestrom für “Start II” | 0 to 5 A | |
| Stand-by current | 24 mA | |
| Main battery overvoltage protection | 15,5 V | |
| Weight | 1,24 kg | 1,33 kg | 1,53 kg | 1,62 kg |
| Dimensions (L× W × H) in mm | 194 × 190 × 70 | 215 × 190 × 70 |
| Operating temperature | -20 to 50 °C | |
ECTIVE BB & SBB 39
| BB30 Compact | BB60, SBB60 (24 V) | |
| Main Battery “Board I” | ||
| Lead-Acid, Gel, AGM nominal voltage | 12 V | |
| LiFePO4 nominal voltage | 12,8 V | |
| Lithium-Ion (NCM) nominal voltage | 11,1 V | |
| Recommended capacity | 45 to 280 Ah | 90 to 560 Ah |
| Vehicle Starter Battery “Start II” | ||
| Vehicle Starter Battery Nominal Voltage | 12 V | 24 V |
| Min. Battery Capacity, recommended | 60 Ah | 100 Ah |
| B2B Charging operation | ||
| Input voltage range “Start II” ,”D+” controlled | 8 to 16 V | 21 to 32 V |
| Maximum charging power | 390 W | 780 W |
| “Board” max. charge current | 30 A | 60 A |
| Activation Control Input “D+” | 8 to 16 V | 21 to 32 V |
| MPPT Solar Charge Controller | ||
| Max. PV power(P max.) | – | 685 W |
| Max. PV current | – | 40 A |
| Max. Open Circuit Voltage (Voc) | – | 50 V |
| “Bord I” max. charge current | – | 50 A |
| “Bord I” charging current for “Start II” | – | 0 to 5 A |
| Stand-by current | 12 mA | 24 mA |
| Main battery overvoltage protection | 15,5 V | |
| Weight | 0,46 kg | 1,6 kg | 1,7 kg |
| Dimensions (L× W × H) in mm | 147 × 118 × 41 | 215 × 190 × 70 |
| Operating temperature | -20 to 50 °C | |
40 ECTIVE BB & SBB
| BB25, SBB25 (24 V) | BB50, SBB50 (24 V) | |
| Main Battery “Board I” | ||
| Lead-Acid, Gel, AGM nominal voltage | 24 V | |
| LiFePO4 nominal voltage | 25,6 V | |
| Lithium-Ion (NCM) nominal voltage | 22,2 V | |
| Recommended capacity | 45 to 280 Ah | 90 to 560 Ah |
| Vehicle Starter Battery “Start II” | ||
| Vehicle Starter Battery Nominal Voltage | 12 V | 24 V |
| Min. Battery Capacity, recommended | 60 Ah | 100 Ah |
| B2B Charging operation | ||
| Input voltage range “Start II” ,”D+” controlled | 10,5 to 16 V | 21 to 32 V |
| Maximum charging power | 650 W | 1300 W |
| “Board” max. charge current | 25 A | 50 A |
| Activation Control Input “D+” | 8 to 16 V | 16 to 32 V |
| MPPT Solar Charge Controller | ||
| Max. PV power(P max.) | 820 W | 820 W |
| Max. PV current | 24 A | |
| Max. Open Circuit Voltage (Voc) | 50 V | |
| “Bord I” max. charge current | 30 A | |
| “Bord I” charging current for “Start II” | 0 to 5 A | |
| Stand-by current | 24 mA | |
| Main battery overvoltage protection | 31 V | 31 V |
| Weight | 1,6 kg | 1,7 kg | 1,6 kg | 1,7 kg |
| Dimensions (L× W × H) in mm | 215 × 190 × 70 | 215 × 190 × 70 |
| Operating temperature | -20 to 50 °C | |
ECTIVE BB & SBB 41
Service / Complaints
If you have any questions about your device after purchase or during operation, we are happy to help you. To speed up the process, please provide information by email in advance, whenever possible with an explanation of the issue and photos.
To contact us and for product returns, please use the following service address:
batterium GmbH
Robert-Bosch-Straße 1, 71691 Freiberg am Neckar
T: +49 7141 / 560 90 40 | F: +49 7141 / 560 90 49
[email protected] ective.de
Tip: When contacting us directly, please have your customer or invoice number and the article number ready.
In case you would like to return a product to us, please follow these guideline to ensure a quick and secure handling of the issue:
- If possible use the original packaging as shipping carton.
- If you no longer have the original packaging, please use suitable (UN-certified) packaging to ensure adequate protection against transport damage.
- If the goods are not shipped in the original packaging or a UN-certified packaging, the goods are considered damaged and will therefore need to be billed when the item is returned.
Please enclose the following with the return shipment:
- Copy of the invoice
- (Service Form)
- Reason for return
- An exact and detailed error description
42 ECTIVE BB & SBB
Disposal
Please recycle or dispose of the packaging material for this product.
The German Electronic Equipment Act (ElektroG) regulates how to place electronic devices on the market, how to recycle and dispose of them. Please note
In case of decommissioning of the device, please contact the nearest recycling centre or point of sale in order to get information about the disposal regulations.
ECTIVE.DE
ECTIVE stands for power supply solutions at an
unbeatable price-performance ratio.
Visit our website to explore more of our
brand and products!
© batterium GmbH, Edition 3, 05/2022
batterium GmbH
Robert-Bosch-Str. 1
71691 Freiberg am Neckar
Germany
eine Marke der / a brand of
batterium GmbH
Robert-Bosch-Straße 1
71691 Freiberg am Neckar
Germany
Tel.: +49 7141 1410870
ECTIVE - Mobile Stromversorgung für Macher
