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Victron miniBMS /smallBMS NG

Use when there is no MultiPlus in the system


Top-down view of Victron smallBMS NG showing status LEDs and connection terminal labelsHighlights:Status & Bluetooth LED: Multi-colour indicator for system operation and Bluetooth pairing status,Error LED: Dedicated visual indicator for system faults and alarm states,Removable Terminal Block: 7-way green screw terminal block for easy system wiring and maintenance,BMS Ports: Secure M8 circular connectors for communication with Victron Lithium Smart batteries,Functional Labels: Clear markings for battery, load, pre-alarm, and remote on/off terminals.Side profile of the smallBMS NG showing the black ABS enclosure and mounting flangePerspective view of the compact Victron smallBMS NG lithium battery management unitAngled view highlighting the circular BMS ports on the orange end panelClose-up of the M8 circular male and female BMS connection portsDual M8 circular connectors allow for secure, vibration-resistant communication between the BMS and Victron Lithium Smart battery banks.Close-up of the 7-way screw terminal block with a factory-installed remote loop wireThe 7-way screw terminal block provides accessible connection points for battery supply, load disconnect, and remote monitoring.
Top-down view of Victron smallBMS NG showing status LEDs and connection terminal labels
Side profile of the smallBMS NG showing the black ABS enclosure and mounting flange
Perspective view of the compact Victron smallBMS NG lithium battery management unit
Angled view highlighting the circular BMS ports on the orange end panel
Close-up of the M8 circular male and female BMS connection ports
Close-up of the 7-way screw terminal block with a factory-installed remote loop wire
Regular price $130.90
$151.80
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Availability: In Stock
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Top-down view of Victron smallBMS NG showing status LEDs and connection terminal labels

Victron miniBMS /smallBMS NG

DESCRIPTION

Victron miniBMS: Simple, Cost-Effective Battery Management

The Victron miniBMS is a compact, cost-effective battery management solution designed to protect Victron Smart LiFePO₄ batteries with M8 circular connectors. It delivers essential battery protection functions but has no VE.Bus interface, so it is not suitable for controlling VE.Bus MultiPlus or Quattro inverter/chargers.

Load Disconnect Output

The Load Disconnect output is normally high and becomes free-floating when cell under-voltage is detected to help prevent deep discharge. Maximum output current is 1 A (not short-circuit protected).

  • Drive a high-current relay or contactor (via suitable interfacing).
  • Control remote on/off inputs of devices such as BatteryProtects, inverters, DC-DC converters, or other loads (some devices may require specific on/off cabling).

Pre-Alarm Output (Early Warning)

The Pre-Alarm output provides an early warning of imminent under-voltage. It is normally free-floating and becomes active during low-voltage conditions, with a minimum 30-second delay before load disconnect occurs. Maximum output current is 1 A (not short-circuit protected).

Charge Disconnect Output

The Charge Disconnect output is normally high and becomes free-floating when cell over-voltage or over-temperature conditions are detected. It is a signal output only, with a maximum current of 10 mA, and is not suitable for powering inductive loads such as relay coils.

  • Remote on/off control of compatible chargers.
  • Control of Cyrix-Li-Charge relays and Cyrix-Li-ct battery combiners.

System On/Off Input

A Remote L / Remote H input allows external on/off control (e.g., switch or relay contact). When set to “off”, both load and charge outputs are placed in the free-floating state to disable loads and charging.

Wide Voltage Compatibility

Designed for 12 V, 24 V, and 48 V systems, with an operating supply range of 8–70 V DC.

LED Indicators

  • Load ON (Blue): Load output is high and cell voltage is above the configured threshold.
  • Temp or OVP (Red): Charge output is free-floating due to temperature limits (high or low) or over-voltage protection being active.

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SPECIFICATIONS

Product smallBMS NG
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 3mA (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 max current: 1 A (not short circuit protected)
Sink current: 0 A (output free floating)
Charge disconnect output Normally high (Vbat – 0.1 V)
Source max current: 500 mA (not short circuit protected)
Sink current: 0A (output free floating)
Pre-alarm output Normally free-floating (low)
In case of alarm: output voltage Vbat -0.1 V
Maximum output current: 500 mA (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 (2.9V < 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 - pending

SKU: VIC-BMS400100300
Barcode: 8719076063537
Model #: BMS400100300
MPN: BMS400100300

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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