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The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
Up to five units can be connected in parallel.
Delivery includes four Insulated Fastons Female Crimp 6.3mm (eight Fastons in case of the Orion 24/12-40).
Models: 12 / 24 Volt
For low power models: please see Orion-Tr series
The BatteryProtect disconnects the battery from non essential loads before it is completely discharged (which would damage the battery) or before it has insufficient power left to crank the engine.
The BatteryProtect is not designed for reverse currents from charging sources
The BatteryProtect automatically detects system voltage
The BatteryProtect can be set to engage / disengage at several different voltages.
The seven segment display will indicate which setting has been chosen.
In this mode the BatteryProtect can be controlled by the VE.Bus BMS.
Note: the BatteryProtect can also be used as a charge interrupter in between a battery charger and a Li-ion
battery. See connection diagram in the manual.
This is important in case of Li-ion batteries, especially after low voltage shutdown.
Please see our Li-ion battery datasheet and the VE.Bus BMS manual for more information.
To prevent damage to sensitive loads due to over voltage, the load is disconnected whenever the DC voltage exceeds 16V respectively 32V.
No relays but MOSFET switches, and therefore no sparks.
The alarm output is activated if the battery voltage drops below the preset disconnect level during more than 12 seconds. Starting the engine will therefore not activate the alarm. The alarm output is a short circuit proof open collector output to the negative (minus) rail, max. current 50 mA. The alarm output is typically used to activate a buzzer, LED or relay.
The load will be disconnected 90 seconds after the alarm has been activated. If the battery voltage increases again to the connect threshold within this time period (after the engine has been started for example), the load will not be disconnected.
The load will be reconnected 30 seconds after the battery voltage has increased to more than the preset reconnect voltage.
Remote Panel for BlueSolar PWM-Pro.
The Smart BatteryProtect disconnects the battery from non-essential loads before it is completely discharged (which would damage the battery) or before it has insufficient power left to crank the engine.
The on/off input can be used as a system on/off switch.
The Smart BatteryProtect automatically detects system voltage one time only.
When using Bluetooth to program the Smart BatteryProtect any required engage/disengage levels can be set.
Alternatively, one of nine predefined engage/disengage levels can be set with the programming pin (see manual).
If required, Bluetooth can be disabled.
In this mode the BatteryProtect can be controlled by the VE.Bus BMS.
Note: the BatteryProtect can also be used as a charge interrupter in between a battery charger and a Li-ion battery. See connection diagram in the manual.
This is important in case of Li-ion batteries, especially after low voltage shutdown.
Please see our Li-ion battery datasheet and the VE.Bus BMS manual for more information.
To prevent damage to sensitive loads due to over voltage, the load is disconnected whenever the DC voltage exceeds 16.3V respectively 32.6V.
No relays but MOSFET switches, and therefore no sparks.
The alarm output is activated if the battery voltage drops below the preset disconnect level during more than 12 seconds.
Starting the engine will therefore not activate the alarm. The alarm output is a short circuit proof open collector output to the negative (minus) rail, max. current 50 mA. The alarm output is typically used to activate a buzzer, LED or relay.
The load will be disconnected 90 seconds after the battery voltage drops below the preset level. If the battery voltage increases again to the connect threshold within this time period (after the engine has been started for example), the load will not be disconnected.
The load will be reconnected 30 seconds after the battery voltage has increased to more than the preset reconnect voltage.
The first line of protection is cell balancing. All Victron LiFePO4 batteries have integrated cell balancing.
The second line of protection consists of:
– shut down of the load in case of imminent cell under voltage, and
– shut down or reduction of the charging current in case of imminent cell over voltage, high temperature (>50°C) or low temperature (<0°C).
The VE.Bus BMS is the core of the second protection line.
However, not all loads or chargers can be controlled directly by the VE.Bus BMS.
In order to shut down such loads or chargers several VE.Bus BMS controllable Cyrix switches are available.
The Cyrix-Li-load will disengage when its control input becomes free floating.
If the battery voltage recovers after disconnecting (which will happen when no other loads are connected to the battery), the output of the BMS will become high and the Cyrix will reengage after 30 seconds. After 3 attempts to reengage, the Cyrix will remain disengaged until battery voltage has increased to more than 13V (resp. 26V or 52V) during at least 30 seconds (which is a sign that the battery is being recharged).
Alternatively, a BatteryProtect can be used (advantage: very low power consumption).
The Cyrix-Li-Charge will connect a battery charger with 3 seconds delay:
– if the Charge Disconnect output of the VE.Bus BMS is high, and
– if it senses 13,7V (resp. 27,4V or 54,8V) or more on its battery charger connection terminal, and
– if it senses 2V or more on its battery terminal (the Cyrix will remain open, if not connect to the battery).
The Cyrix-Li-Charge will disengage immediately whenever its control input becomes free floating, signalling cell over voltage or cell over temperature.
In general a cell over voltage alarm will reset shortly after charging has been stopped. The Cyrix will then reconnect the charger after a delay of 3 seconds. After two attempts to reengage with 3 seconds delay, the delay increases to 10 minutes.
Whenever battery voltage is less than 13,5V (resp. 27V or 54V), the Cyrix will disengage with a delay of 1 hour.
Note 1: In case of zero discharge current, or a small discharge current, the Cyrix will not disengage shortly after the charger has been switched off and/or disconnected, because battery voltage will remain higher than 13,5V.
Note 2: If, after the Cyrix has disengaged, the output of the battery charger immediately increases to 13,7V or
more, the Cyrix will re-engage, with 3 seconds delay.
The functionality of the Cyrix-Li-ct is analogous to the Cyrix-ct.
The Cyrix-Li-ct will parallel connect a lead acid starter battery and a LiFePO4 battery:
– if the Charge Disconnect output of the VE.Bus BMS is high, and
– if it senses 13,4V (resp. 26,8V) or more on one of its power terminals.
The Cyrix will disengage immediately:
– when its control output becomes free floating, signalling cell over voltage or cell over temperature,
and/or
– when battery voltage drops below 13,2V.
Start assist function: a short positive pulse will close the relay during 30 seconds (see figure on page 2).
A built-in transient voltage suppressor will limit the voltage spike that may occur when the Cyrix suddenly
disengages due to cell overvoltage or over temperature.
The first line of protection is cell balancing. All Victron LiFePO4 batteries have integrated cell balancing.
The second line of protection consists of:
– shut down of the load in case of imminent cell under voltage, and
– shut down or reduction of the charging current in case of imminent cell over voltage, high temperature (>50°C) or low temperature (<0°C).
The VE.Bus BMS is the core of the second protection line.
However, not all loads or chargers can be controlled directly by the VE.Bus BMS.
In order to shut down such loads or chargers several VE.Bus BMS controllable Cyrix switches are available.
The Cyrix-Li-load will disengage when its control input becomes free floating.
If the battery voltage recovers after disconnecting (which will happen when no other loads are connected to the battery), the output of the BMS will become high and the Cyrix will reengage after 30 seconds. After 3 attempts to reengage, the Cyrix will remain disengaged until battery voltage has increased to more than 13V (resp. 26V or 52V) during at least 30 seconds (which is a sign that the battery is being recharged).
Alternatively, a BatteryProtect can be used (advantage: very low power consumption).
The Cyrix-Li-Charge will connect a battery charger with 3 seconds delay:
– if the Charge Disconnect output of the VE.Bus BMS is high, and
– if it senses 13,7V (resp. 27,4V or 54,8V) or more on its battery charger connection terminal, and
– if it senses 2V or more on its battery terminal (the Cyrix will remain open, if not connect to the battery).
The Cyrix-Li-Charge will disengage immediately whenever its control input becomes free floating, signalling cell over voltage or cell over temperature.
In general a cell over voltage alarm will reset shortly after charging has been stopped. The Cyrix will then reconnect the charger after a delay of 3 seconds. After two attempts to reengage with 3 seconds delay, the delay increases to 10 minutes.
Whenever battery voltage is less than 13,5V (resp. 27V or 54V), the Cyrix will disengage with a delay of 1 hour.
Note 1: In case of zero discharge current, or a small discharge current, the Cyrix will not disengage shortly after the charger has been switched off and/or disconnected, because battery voltage will remain higher than 13,5V.
Note 2: If, after the Cyrix has disengaged, the output of the battery charger immediately increases to 13,7V or
more, the Cyrix will re-engage, with 3 seconds delay.
The functionality of the Cyrix-Li-ct is analogous to the Cyrix-ct.
The Cyrix-Li-ct will parallel connect a lead acid starter battery and a LiFePO4 battery:
– if the Charge Disconnect output of the VE.Bus BMS is high, and
– if it senses 13,4V (resp. 26,8V) or more on one of its power terminals.
The Cyrix will disengage immediately:
– when its control output becomes free floating, signalling cell over voltage or cell over temperature,
and/or
– when battery voltage drops below 13,2V.
Start assist function: a short positive pulse will close the relay during 30 seconds (see figure on page 2).
A built-in transient voltage suppressor will limit the voltage spike that may occur when the Cyrix suddenly
disengages due to cell overvoltage or over temperature.
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
When installed with the screw terminals oriented downwards.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
Plug 16A/250Vac (2p/3w) for Power Inlet stainless steel 16A
One battery with a slightly higher internal leakage current in a 24V or 48V bank of several series/parallel connected batteries will cause undercharge of that battery and parallel connected batteries, and overcharge of the series connected batteries. Moreover, when new cells or batteries are connected in series, they should all have the same initial state of charge. Small differences will be ironed out during absorption or equalize charging, but large differences will result in damage due to excessive gassing (caused by overcharging) of the batteries with the higher initial state of charge and sulphation (caused by undercharging) of the batteries with the lower initial state of charge.
The Battery Balancer equalizes the state of charge of two series connected 12V batteries, or of several parallel strings of series connected batteries.
When the charge voltage of a 24V battery system increases to more than 27,3V, the Battery Balancer will turn on and compare the voltage over the two series connected batteries. The Battery Balancer will draw a current of up to 0,7A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries will converge to the same state of charge.
If needed, several balancers can be paralleled.
A 48V battery bank can be balanced with three Battery Balancers.
Green: on (battery voltage > 27,3V)
Orange: lower battery leg active (deviation > 0,1V)
Orange: upper battery leg active (deviation > 0,1V)
Red: alarm (deviation > 0,2V). Remains on until the deviation has reduced to less than 0,14V, or until system voltage drops to less than 26,6V.
Normally open. The alarm relay closes when the red LED switches on and opens when the red LED switches off.
Two terminals are available to connect a push button. Interconnecting the two terminals resets the relay.
The reset condition will remain active until the alarm is over. Thereafter the relay will close again when a new alarm occurs.
The BMV-702 measures the midpoint of a string of cells or batteries. It displays the deviation from the ideal midpoint in volts or percent.
Separate deviation percentages can be set to trigger a visual/audible alarm and to close a potential free relay contact for remote alarm purposes.
Please see the manual of the BMV-702 for more information about battery balancing.
The MK3-USB allows the following products to connect to a computer for configuration and firmware updates:
Multi, MultiGrid, MultiPlus, MultiPlus-II, Quattro, Inverter/Charger settings in ECOmulti, EasySolar, EasyPlus, and Inverters with a VE.Bus communication port.
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by for example the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
An unlimited number of units can be connected in parallel.
The output current will reduce at high ambient temperature.
No special tools needed for installation.
On 12V and 24V input models only.
Models: 12 / 24 / 48 Volt
The remote on-off eliminates the need for a high current switch in the input wiring. The remote on-off can be operated with a low power switch or by the engine run/stop switch (see manual).
For example to charge a 12 Volt starter or accessory battery in an otherwise 24V system.
Up to five units can be connected in parallel.
Delivery includes four Insulated Fastons Female Crimp 6.3mm (eight Fastons in case of the Orion 24/12-40).
Models: 12 / 24 Volt
For low power models: please see Orion-Tr series
Victron Energy MK2 interface module to connect PC to Phoenix. For use with v18 software and Phoenix chargers only.