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Victron Energy

BPR110048000

Smart BatteryProtect 48V-100A

Designed to protect 48V battery systems, the Victron Smart BatteryProtect 100A prevents excessive discharge and overvoltage through automatic cutoff. Bluetooth programming via VictronConnect makes threshold management and real-time monitoring easy. Compatible with lithium batteries via an external BMS, it ensures reliable protection.

Delivered as a single unit, no accessories included.

Retail priceBenefit from the professional rate

176,40€

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Available in stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

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Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Product use	Protects the battery from excessive discharge and can be used as an on/off switch for the system.
Switch type	MOSFET switches
Continuous current (A)	100
Intermittent current (A)	250
Cranking current (A)	250 A
Maximum DC voltage	64 V
Number of poles	1
Positions	ON/OFF (automatic or remote)
Terminal type	Screw-mounted
Terminal size	M8
Wiring connection type	Direct by screw terminals
Control type	Bluetooth, remote (wired)
Mounting type	Surface mount
Ingress protection	IP67 (electronics)
Operating voltage range	40 - 64 V
Operating temperature range	-40 to +40
Housing material	Plastic
Weight	0.8 kg
Dimensions (W x H x D)	123 x 62 x 120
Maximum alarm output current	50
Alarm Output Protection Type	Short circuit
Alarm Output Type	Timed
Automatic voltage detection	Yes
Product barcode	SK-000046912
Battery technology	Compatible with various battery types, optimized for Li-ion
Bms Compatibility	Compatible with external BMS (e.g., VE.Bus BMS, Lynx Smart BMS)
Current Consumption Off Mode Ma	0.6
Current Consumption On Mode Ma	1.5
Current Directionality	Unidirectional
Default Disengage Voltage 12v	10.5
Default Disengage Voltage 24v	21
Default Engage Voltage 12v	12
Default Engage Voltage 24v	24
Derating Temperature Start C	40
Discharge cut-off voltage	10.5
Display type	7-segment LED
Ignition protection	Yes
Ignition Protection	Yes
Ip Rating Connections	IP00
Li-ion battery mode support	Yes
Load Disconnect Delay Seconds	90
Load Reconnect Delay Seconds	30
Max charge current (A)	100.0
Max discharge current (A)	100.0
Mounting orientation	Not specified (flexible)
Nominal voltage	48
Over Voltage Protection Threshold 12v	16.3
Over Voltage Protection Threshold 24v	32.6
Peak discharge current	250.0
Programming Method	Via Bluetooth (VictronConnect app)
Quiescent Current Consumption Bluetooth Off	1.6
Quiescent Current Consumption Bluetooth On	1.9
Quiescent Current Consumption Bluetooth Standby	1.7
Recommended continuous discharge current	100.0
Storage temperature range	-40 to +40
Wired network	Digital inputs/outputs (for remote control and BMS), programming pin

Detailed description

The Victron Smart BatteryProtect 48V-100A is an advanced battery protection device, ideal for a wide range of energy systems, including marine applications. It disconnects non-essential loads before the battery is fully discharged, preserving its lifespan and ensuring sufficient power for critical functions. This unidirectional protector handles a maximum continuous current of 100A and a peak current of 250A for 30 seconds, operating on a 48V system voltage.

Advanced Protection and Safety

The Smart BatteryProtect includes overvoltage protection, disconnecting the load if the DC voltage exceeds 64V to safeguard sensitive equipment. Its "ignition proof" design uses MOSFET switches instead of relays, eliminating spark risks. Current draw is ultra-low, at 1.9mA in operation (Bluetooth enabled) and 1.7mA in standby (Bluetooth enabled) or 1.6mA in standby (Bluetooth disabled), which is particularly relevant for systems using Li-ion batteries after a low-voltage cutoff.

Smart Features and System Integration

The Smart version offers Bluetooth programming via the VictronConnect app, allowing easy configuration of engagement and disengagement levels, among other parameters. For lithium battery systems, a specific setup enables external control by a BMS (Battery Management System) such as the VE.Bus BMS or Lynx Smart BMS. The device can also serve as a remote on/off switch for the entire system. It features a timed alarm output that activates after 12 seconds if the battery voltage drops below the preset disconnection level, preventing false alarms from engine startups. The disconnection and reconnection delays for loads allow time to react to voltage fluctuations before a cutoff occurs.

Operating Modes and Diagnostics

The Smart BatteryProtect offers multiple operating modes: Buzzer or LED (default), Relay mode, and Li-ion mode. The VictronConnect app enables real-time monitoring of key values, warnings, alarms, and errors, facilitating diagnostics without requiring a constant paired connection. An alternative programming method is also available via the PROG pin to the GND pin.

Documentation

Type	Nom
	EN - Technical Datasheet
	EN - Manuel utilisateur

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis: Smart BatteryProtect 48V-100A for marine energy systems »

The Victron Smart BatteryProtect 48V-100A is an essential component for the longevity of marine electrical installations, particularly those equipped with costly 48V battery banks, whether lead-acid or lithium. Its primary function is to prevent deep discharge of the batteries, a major cause of reduced battery life. Beyond this fundamental protection, it provides valuable safeguarding of connected equipment by automatically isolating them in case of system overvoltage.

In terms of integration, its unidirectional nature is a key consideration when designing the wiring: it must be positioned to specifically manage either discharge to consumers or charging from a source, but not both simultaneously. It is critical not to connect it directly to the DC inputs of converters or chargers; instead, use its remote output to control their activation or deactivation. Bluetooth connectivity is a major advantage of the Smart version, greatly simplifying the configuration of voltage thresholds and providing real-time diagnostic capabilities via the VictronConnect app. This remote management capability is a definite benefit over non-Smart models, especially for installations where physical access to the device may be restricted.

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Smart BatteryProtect 48V-100A

176,40€

Frequently Asked Questions

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What is the main function of the Smart BatteryProtect 48V-100A?

The primary role of the Smart BatteryProtect 48V-100A is to protect your battery from a full discharge. It automatically disconnects non-essential loads before the battery is too deeply discharged, thereby extending its lifespan and ensuring sufficient power for critical functions. It can also disable chargers without a remote on/off port to protect against overvoltage.

What are the voltage and current specifications for this model?

The Smart BatteryProtect 48V-100A is designed to operate on a 48V system. It manages a maximum continuous current of 100A and can handle a peak current of 250A for 30 seconds.

What protections does the Smart BatteryProtect 48V-100A offer?

This device provides multiple protections:

Excessive discharge protection: It disconnects loads to prevent battery damage. Overvoltage protection: It disconnects the load if continuous voltage exceeds 64V, protecting sensitive equipment.

Is the Smart BatteryProtect 48V-100A spark-resistant?

Yes, its design is "ignition proof". It uses MOSFET switches rather than relays, which eliminates any risk of sparks and increases safety, particularly in marine environments.

What is the current consumption of the device?

The Smart BatteryProtect 48V-100A current draw is extremely low:

1.9mA in operation (Bluetooth enabled)
1.7mA in standby (Bluetooth enabled)
1.6mA in standby (Bluetooth disabled)
This low power draw is particularly critical for systems using Li-ion batteries after a low-voltage shutdown.

How does the timed alarm output work?

The timed alarm output activates if the battery voltage drops below the preset disconnect level and remains there for more than 12 seconds. This delay prevents nuisance alarms, for example when starting an engine.

Can the Smart BatteryProtect 48V-100A serve as a general on/off switch?

Yes, the Smart BatteryProtect can be used as a remote on/off switch for the entire system, providing increased flexibility in managing your electrical installation.

Is the direction of the current important for the Smart BatteryProtect?

Yes, the Smart BatteryProtect is a unidirectional device. Current can only flow from the IN terminal (connected to the battery) to the OUT terminal (connected to the load). Reverse currents, flowing from OUT to IN, are strictly prohibited and may damage the device.

Is the Smart BatteryProtect 48V-100A compatible with lithium batteries?

Yes, it is compatible with lithium batteries. It has a specific configuration that allows external control via a Battery Management System (BMS) for optimal protection.

Which external BMS models can control the Smart BatteryProtect 48V-100A?

For systems with lithium batteries, the Smart BatteryProtect can be controlled by an external BMS (Battery Management System) such as the VE.Bus BMS or the Lynx Smart BMS from Victron Energy.

Can I connect inverters or inverter-chargers directly to the Smart BatteryProtect 48V-100A?

No, it is strictly prohibited to connect inverters or inverter-chargers directly to the DC inputs of the Smart BatteryProtect. Reverse current could flow and damage the device.

How to control an inverter or inverter-charger with the Smart BatteryProtect 48V-100A?

To control an inverter or charger-inverter, you must use the Smart BatteryProtect to manage its remote control port. Do not connect the inverter or charger-inverter directly to the BatteryProtect’s DC terminals.

Which mobile application is the Smart BatteryProtect 48V-100A compatible with?

The Smart version of BatteryProtect allows programming and configuration via Bluetooth using the VictronConnect app. This app is available for smartphones and tablets.

Where should I install the Smart BatteryProtect 48V-100A?

The Smart BatteryProtect must be installed in a well-ventilated area and preferably close to the battery (maximum 50 cm). However, to avoid any risk from corrosive gases, it must not be installed directly above the battery.

Is a fuse required with the Smart BatteryProtect 48V-100A?

Yes, a properly sized fuse must be inserted in the cable between the battery’s positive terminal and the Smart BatteryProtect, in accordance with local regulations.

How should I connect the ground cable (GND)?

The ground cable (1.5mm²) provided must be connected directly to the negative terminal of the battery (or to the chassis of a vehicle). No other equipment must be connected to this wire. It is also recommended to protect this cable with a 300mA fuse.

How to program the disconnection and reconnection levels of the Smart BatteryProtect 48V-100A?

Programming engagement and disengagement levels, as well as other parameters, is done easily via Bluetooth using the VictronConnect app on your smartphone or tablet.

What happens if the Smart BatteryProtect detects a short circuit?

The Smart BatteryProtect short-circuit protection will activate. This can occur if you attempt to directly connect loads with capacitors (such as some inverters) to its DC inputs. It is recommended to use the remote control port for these types of devices.

Is the Smart BatteryProtect 48V-100A compatible with other system voltages?

No, the Smart BatteryProtect 48V-100A is specifically designed to operate with 48V system voltages and is not compatible with other system voltages.

What precautions should be taken regarding cable size and length?

It is critical to select the correct cable size and length based on the load. Excessive voltage drop due to an oversized or undersized cable between the battery and the BatteryProtect can trigger a short-circuit alarm at startup or cause an unexpected shutdown of the device.