Battery-to-Battery Chargers for Boats

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Product image of VICTRON ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15A
VICTRON ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15A
only €214 24 €243.01
No rating yet
Only 4 in stock
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 24V / 15APreview image
-12%
Product image of VICTRON ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17A
VICTRON ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17A
only €214 24 €243.01
No rating yet
Only 2 in stock
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 24V / 17APreview image
-12%
Product image of VICTRON ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30A
VICTRON ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30A
only €214 24 €243.01
(3)
8 left in stock
ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 12V to 12V / 30APreview image
-12%
Product image of VICTRON ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30A
VICTRON ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30A
only €214 24 €243.01
No rating yet
Only 3 in stock
ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30APreview image
ORION-TR SMART Battery to Battery Charger / 24V to 12V / 30APreview image
-12%
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 A
only €298 28
(2)
Only 2 in stock
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 -12 V / 30 APreview image
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 A
only €466 34
No rating yet
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 24 V / 70 APreview image
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 A
only €365 50
(1)
Only 1 in stock
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 12 - 12 V / 60 APreview image
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 A
only €466 34
(2)
Only 2 in stock
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 24 V / 35 APreview image
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 A
only €466 34
No rating yet
Only 2 in stock
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / 24 - 12 V / 35 APreview image
Product image of STERLING PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 A
STERLING PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 A
only €336 09
No rating yet
Only 2 left in stock
PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 APreview image
PRO BATT ULTRA Battery-to-Battery Charger / integr. MPPT solar regulator/ 12 V to 12 V / 30 APreview image
Product image of STERLING PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30A
STERLING PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30A
only €260 46
(4)
Only 1 in stock
PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30APreview image
PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30APreview image
PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30APreview image
PRO CHARGE B Battery-to-Battery Charger / 12V to 12V / 30APreview image
Product image of STERLING PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 A
STERLING PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 A
only €247 86
No rating yet
Only 1 left in stock
PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 APreview image
PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 APreview image
PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 APreview image
PRO CHARGE B Battery-to-Battery Charger / 24 V to 12 V / 13 APreview image
Product image of DOMETIC PerfectPower DC-DC Charging Converter DCC 1212-10
DOMETIC PerfectPower DC-DC Charging Converter DCC 1212-10
only €117 61 €172.27
No rating yet
Only 1 left in stock
PerfectPower DC-DC Charging Converter DCC 1212-10Preview image
PerfectPower DC-DC Charging Converter DCC 1212-10Preview image
PerfectPower DC-DC Charging Converter DCC 1212-10Preview image
PerfectPower DC-DC Charging Converter DCC 1212-10Preview image
-32%
Product image of DOMETIC PerfectPower DC-DC Charging Converter DCC 2424-10
DOMETIC PerfectPower DC-DC Charging Converter DCC 2424-10
only €168 03 €256.30
No rating yet
Only 3 left in stock
PerfectPower DC-DC Charging Converter DCC 2424-10Preview image
PerfectPower DC-DC Charging Converter DCC 2424-10Preview image
PerfectPower DC-DC Charging Converter DCC 2424-10Preview image
PerfectPower DC-DC Charging Converter DCC 2424-10Preview image
-34%
Product image of DOMETIC PerfectPower DC-DC Charging Converter DCC 2412-20
DOMETIC PerfectPower DC-DC Charging Converter DCC 2412-20
only €130 21 €197.48
No rating yet
Only 2 left in stock
PerfectPower DC-DC Charging Converter DCC 2412-20Preview image
PerfectPower DC-DC Charging Converter DCC 2412-20Preview image
PerfectPower DC-DC Charging Converter DCC 2412-20Preview image
PerfectPower DC-DC Charging Converter DCC 2412-20Preview image
-34%
Product image of DOMETIC PerfectPower DC-DC Charging Converter DCC 1224-20
DOMETIC PerfectPower DC-DC Charging Converter DCC 1224-20
only €226 85 €340.34
No rating yet
Only 2 left in stock
-33%
Product image of DOMETIC PerfectPower DC-DC Charging Converter DCC 2412-40
DOMETIC PerfectPower DC-DC Charging Converter DCC 2412-40
only €226 85 €340.34
No rating yet
Only 1 left in stock
PerfectPower DC-DC Charging Converter DCC 2412-40Preview image
PerfectPower DC-DC Charging Converter DCC 2412-40Preview image
PerfectPower DC-DC Charging Converter DCC 2412-40Preview image
PerfectPower DC-DC Charging Converter DCC 2412-40Preview image
-33%
Product image of MASTERVOLT MAC PLUS DC-DC CHARGER 12V to 24V / 30A
MASTERVOLT MAC PLUS DC-DC CHARGER 12V to 24V / 30A
only €504 16 €575.00
No rating yet
MAC PLUS DC-DC CHARGER 12V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 12V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 12V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 12V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 12V to 24V / 30APreview image
-12%
Product image of MASTERVOLT MAC PLUS DC-DC CHARGER 24V to 24V / 30A
MASTERVOLT MAC PLUS DC-DC CHARGER 24V to 24V / 30A
only €504 16 €575.00
No rating yet
Only 1 in stock
MAC PLUS DC-DC CHARGER 24V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 24V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 24V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 24V to 24V / 30APreview image
MAC PLUS DC-DC CHARGER 24V to 24V / 30APreview image
-12%
Product image of MASTERVOLT MAC PLUS DC-DC CHARGER 12V to 12V / 50A
MASTERVOLT MAC PLUS DC-DC CHARGER 12V to 12V / 50A
only €504 16 €575.00
No rating yet
Only 1 in stock
MAC PLUS DC-DC CHARGER 12V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 12V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 12V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 12V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 12V to 12V / 50APreview image
-12%
Product image of MASTERVOLT MAC PLUS DC-DC CHARGER 24V to 12V / 50A
MASTERVOLT MAC PLUS DC-DC CHARGER 24V to 12V / 50A
only €504 16 €575.00
No rating yet
MAC PLUS DC-DC CHARGER 24V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 24V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 24V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 24V to 12V / 50APreview image
MAC PLUS DC-DC CHARGER 24V to 12V / 50APreview image
-12%
Battery-to-battery chargers optimise the charging of your battery. These kinds of chargers do not require any changes to be made to the alternator or the on-board installation. B2B chargers are particularly effective for charging service batteries. 

Battery-to-Battery Chargers

- Optimised battery charging without modifying the alternator -

What is a battery to battery charger? 

Also known internationally as B2B chargers, these devices are used wherever optimum battery charging is wanted without requiring intervention/manipulation of the alternator or complicated modifications to the on-board installation.

How is a battery to battery charger installed on board?

Installation is simple. Just connect the device between an existing battery and the battery you want to charge. Both PLUS cables should be fused close to the battery. Important: Both batteries must have a common MINUS connection. The unit becomes active as soon as a sufficiently high charging voltage is supplied to the device input. Depending on the version, B2Bs enable the charging voltage to be converted from 12 to 24 volts or vice versa. A battery for a 24 V bow thruster can easily be charged in the 12 V on-board power supply or a battery for 12 V navigation or radio equipment in the 24 V on-board power supply. With various characteristics for lead-acid, AGM, gel or LiFePO4 batteries, an additional battery of a different type can also be charged: For example, a LifePO4 battery can be charged in addition to a 12 V lead-acid starter battery.

Using an additional "thin" measuring line (1x 1.5 mm²) between the B2B and the battery to be charged, line and terminal losses can be detected and compensated for by the B2B, which is an ideal solution for charging bow thruster batteries that are often insufficiently charged due to long cable lengths.

Battery to battery chargers for service batteries

Battery to battery chargers are particularly useful for charging service batteries for use with low-emission Euro 6 engines. With these motors, the alternator is controlled by battery management systems (BMS), which prevent the alternator from charging the starter battery continuously and only up to a certain level. Normally, service batteries cannot be sufficiently charged with standard charging current distribution (isolating diode, etc.).

Customer ratings & reviews

All reviews (126.240)
User profile icon

Sreten G. on 04.10.2022

I have ordered several times, very satisfied with the quality and speed of delivery.

User profile icon

Pietari P. on 04.10.2022

Delivery was fast and the servise was good.

User profile icon

Janko S. on 03.10.2022

Always. I am very satisfied