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Victron miniBMS /smallBMS

Simple and low cost alternative to the VE.Bus BMS


Top-down view of Victron miniBMS showing status LEDs and connection terminalsHighlights:M8 Connectors: Quick-connect M8 circular connectors for easy integration with Victron Lithium Smart batteries,Screw Terminal Block: 7-pin green screw terminal block for load disconnect, charging, and pre-alarm wiring,Status LEDs: Visual indicators for Load ON status and Temperature or Overvoltage protection warnings,Remote Control: Remote L and H terminals for external system on/off control,Pre-alarm Output: Terminal providing an early warning signal before the BMS disconnects loads.Side perspective of black Victron miniBMS battery management systemAngular view of Victron smallBMS showing compact ABS enclosureWiring diagram of a miniBMS in a DC off-grid solar system with lithium batteryWiring diagram illustrating the integration of a miniBMS with a 12V lithium battery, MPPT solar controller, and Smart BatteryProtect in a DC off-grid configuration.Wiring diagram of a miniBMS in a vehicle or boat system with alternatorApplication example for marine or automotive systems, showing the miniBMS controlling an alternator and charging system via a Cyrix-Li-ct relay.Front view of the Victron smallBMS variant with green connector terminalsKey features: Operating voltage range from 8 to 70 VDC, Integrated pre-alarm output signal, Remote on/off control terminals, Durable matt black ABS enclosure, IP20 protection rating.Dimensional drawing of the smallBMS enclosure showing measurements in millimetresTechnical dimensional drawing providing detailed specifications for the smallBMS enclosure, including its 107mm total length and mounting hole positions.
Top-down view of Victron miniBMS showing status LEDs and connection terminals
Side perspective of black Victron miniBMS battery management system
Angular view of Victron smallBMS showing compact ABS enclosure
Wiring diagram of a miniBMS in a DC off-grid solar system with lithium battery
Wiring diagram of a miniBMS in a vehicle or boat system with alternator
Front view of the Victron smallBMS variant with green connector terminals
Dimensional drawing of the smallBMS enclosure showing measurements in millimetres
Regular price $83.16
$92.40
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Availability: In Stock at Victron Warehouse Allow up to 5 days before dispatch
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Top-down view of Victron miniBMS showing status LEDs and connection terminals

Victron miniBMS /smallBMS

DESCRIPTION

Victron miniBMS: The Cost-Effective Battery Management Solution

Discover the Victron miniBMS, a straightforward and budget-friendly alternative to the VE.Bus BMS, designed for seamless integration with Victron Smart LiFePo4 batteries. While it doesn't support VE.Bus MultiPlus and Quattro inverter/chargers due to the absence of a VE.Bus interface, the miniBMS excels in various applications with its three distinct outputs, mirroring the functionality of the VE.Bus BMS.

Load Disconnect Output for Enhanced Control

The Load Disconnect output, maintaining a normally high state, transitions to free floating under cell under-voltage conditions (default 2.8V/cell, adjustable between 2.6V and 2.8V per cell), with a maximum current capacity of 1A. This output, not safeguarded against short circuits, is ideal for managing:

  • High current relays or contactors.
  • The remote on/off inputs of Battery Protects, inverters, DC-DC converters, or other loads, ensuring compatibility with various devices (refer to our detailed manual for specific cable requirements).

Pre-Alarm Output for Early Warning

Featuring a normally free-floating pre-alarm output that activates under imminent cell under-voltage scenarios (default 3.1V/cell, adjustable between 2.85V and 3.15V per cell), this function provides a crucial early warning with a 1A maximum current (not short circuit protected) and a minimum 30-second delay before load disconnect.

Charge Disconnect Output for Safe Charging

The Charge Disconnect output, typically high, becomes free floating to signal imminent cell over-voltage or over-temperature conditions, with a 10mA maximum current. This output, unsuitable for powering inductive loads like relay coils, facilitates:

  • Remote on/off control of chargers.
  • Integration with Cyrix-Li-Charge relays and Cyrix-Li-ct Battery Combiners, ensuring a versatile and safe charging environment.

System On/Off Input for Simplified Operation

Control the system effortlessly with the on/off input, affecting both outputs to ensure loads and chargers are deactivated when necessary. This feature accommodates a variety of control methods, including direct connections between terminals Remote L and H or adjustments to battery plus/minus.

Comprehensive Protection Across Voltage Systems

Designed to safeguard 12V, 24V, and 48V systems with an operating voltage range of 8 to 70V DC, the miniBMS offers versatile protection for a wide array of power setups.

Intuitive LED Indicators for Immediate Status Updates

  • Load ON (Blue): Indicates active load output (cell voltage >2.8V, adjustable on the battery).
  • Temp or OVP (Red): Signifies the charger output is free floating due to cell over-temperature (>50°C), under-temperature (<5°C), or over-voltage conditions.

Optimize your energy system with the Victron miniBMS, the economical choice for advanced battery management. Visit our website for detailed manuals and further information on integrating the miniBMS into your Victron energy setup.

SPECIFICATIONS

Specifications

Product smallBMS with pre-alarm BMS400100000
Operating voltage (Vbat) 8 – 70 VDC
Power supply cable and fuse (not supplied) Recommended fuse size 0.3 A - 2.5 A, dependent on devices connected to Load disconnect and pre-alarm output
Current consumption, remote on 2.2 mA (excluding Load and Charge disconnect output current)
Current consumption, low cell voltage 1.2 mA
Current consumption, remote off 1.2 mA
Load disconnect output Normally high (Vbat – 0.1 V) Source current limit: 1A (not short circuit protected) Sink current: 0A (output free floating)
Charge disconnect output Normally high (Vbat –0.6 V) Source current limit: 10mA (short circuit protected) Sink current: 0A (output free floating)
Pre-alarm output Normally free floating In case of alarm: output voltage Vbat -0.1 V Maximum output current: 1A (not short circuit protected)
Remote on/off Remote L and Remote H Use modes: 1. ON when the L and H terminal are interconnected 2. ON when the L terminal is pulled to battery minus (V <3.5 V) 3. ON when the H terminal is high (2.9 V <VH <Vbat) 4. OFF in all other conditions
GENERAL  
Operating temperature range -20 to +50 °C (0 – 120 °F)
Humidity Max. 95 % (non-condensing)
Protection grade IP20
ENCLOSURE  
Material and colour ABS, matt black
Weight 0.1 kg
Dimensions (h x w x d) 106 x 42 x 23 mm
STANDARDS  
Safety EN 60950
Emission EN 61000-6-3, EN 55014-1
Immunity EN 61000-6-2, EN 61000-6-1, EN 55014-2
Automotive Regulation UN/ECE-R10 Rev.4

SKU: VIC-BMS400100000
Barcode: 8719076043485
Model #: BMS400100000
MPN: BMS400100000

WARRANTY

Victron Energy Limited Warranty Policy

Direct Customers

Victron Energy provides the following warranty to any direct customer (OEM, distributor or dealer) in relation to any products that Victron Energy has directly sold to the direct customer. This warranty is not an end-user warranty between Victron Energy and an end-user, and end-users shall not have any rights or remedies under this limited warranty towards Victron Energy directly. The direct customer shall, in turn, ensure that the end-user is provided with a warranty identical to this warranty, subject to applicable local mandatory law.

End-Users

Victron Energy may also provide a warranty directly to end-users, in which case the below warranty conditions equally apply to such warranty. In that case, end-users shall claim their warranty at their place of purchase or through the original direct customer of Victron, which can be found through the support section on Victron’s website https://www.victronenergy.com/support. Hence, the direct customer shall on behalf of Victron Energy deal with any warranty claims made under any warranty that Victron Energy may provide directly to end-users. This support section on Victron’s website https://www.victronenergy.com/support will provide further guidance on the procedure for end-users to make a claim under this limited warranty.

If the end-user is a consumer – a natural person who is acting for purposes which are outside that person's trade, business, craft or profession – the following applies. The rights and remedies granted to the consumer under this limited warranty are without prejudice to the consumer’s statutory rights. Furthermore, the consumer is entitled by law to remedies from the seller free of charge in the event of a lack of conformity of the goods (such as repair, replacement, price reduction or rescission), which remedies are not affected by this limited warranty.

Warranty

Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the original end-user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead-acid batteries: 2 years from date of purchase by the original end-user, with a maximum of 30 months from the Victron Energy invoice date, Lithium batteries: 3 years from date of purchase by the original end-user, with a maximum of 42 months from the Victron Energy invoice date. In addition to this, proof of correct battery usage is required when making a battery warranty claim.

For a 10% surcharge on the current net price for products that came with a 5-year warranty, an additional 5 years of warranty can be purchased by Victron’s direct customers, bringing the total warranty to 10 years. Warranty extensions need to be applied for ultimately one year before the expiration of the original term. Victron may ask proof that the product was still functional at the time of purchase of the extended warranty.

During the warranty period, Victron Energy will, at its discretion, repair, replace or (partly) credit the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation, and re‐installation.

This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like:

  • Reversed battery polarity.
  • Inadequate connection.
  • Mechanical shock or deformation.
  • Contact with liquid or oxidation by condensation.
  • Use in an inappropriate environment (dust, corrosive vapour, humidity, high temperature, biological infestation, etc.).
  • Breakage or damage due to lightning.
  • Connection terminals and screws destroyed or other damages, like overheating, due to insufficient tightening.
  • For any electronic breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state of the internal control diode and/or the input/output X and Y capacitors determine the warranty.

This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone other than Victron Energy or one of its authorized Repair Centres. In order to qualify for the warranty, the product must not be disassembled or modified.

This warranty and our warranty obligations thereunder (repair, replacement or credit) are the direct customer’s and, if applicable, the end-user’s sole rights and remedies and our sole obligations with respect to any defective and/or non-conforming product or breach of warranty and is subject to and without prejudice to the limitations of liability in this warranty.

Victron Energy shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault.

As a product requires service, it must be brought back to the place of purchase. In case no contact can be made with the merchant, or if he is either unable or not allowed to provide service, direct contact should be made with Victron Energy through the support section on Victron’s website.

In case Victron Energy replaces a product, it will own the replaced product. Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers when performing warranty repairs or building replacement products.

If Victron Energy repairs or replaces a part of a product, its warranty term is not extended: the warranty will apply for the remaining term of the original warranty term. For example, if Victron Energy replaces a product with a 5-year warranty after 3 years, the warranty of this product will apply for another 2 years, with a minimum of 6 months.

All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent or special damages, even if having been advised of the probability of such damages.

The foregoing limited warranty provided by Victron Energy is in lieu of any other warranties, express or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, of any kind whatsoever including, without limitation, warranties of merchantability or fitness for a particular purpose, with respect to any product. The above is without prejudice to the arrangement for consumers detailed above.

Life Support Policy

As a general policy, Victron Energy does not recommend the use of any of its products in life support applications where failure or malfunction of Victron Energy's product can be reasonably expected to cause the failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the liability of Victron Energy is adequately protected under the circumstances.

Warranty on repairs for products outside their warranty period

The warranty period on products that are outside their warranty period and have been repaired by Victron Energy or one of the Victron Energy Repair centres is six (6) months from delivery. The same applies to spare parts and circuit boards that have been supplied or repaired by Victron Energy.

Transport

It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.

Severability

If a part of the terms and conditions of this warranty is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions of this warranty.

Applicable law

This warranty is exclusively governed by the laws of the Netherlands, to the exclusion of the UN Convention on Contracts for the International Sale of Goods.

Contact details

Victron Energy B.V. | De Paal 35, 1351 JG Almere, The Netherlands | https://www.victronenergy.com/support

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