{"product_id":"victron-minibms-smallbms","title":"Victron Energy - miniBMS \/smallBMS","description":"\u003ch2\u003eVictron smallBMS NG: Advanced Battery Management for Victron Smart Lithium Systems\u003c\/h2\u003e\n\u003ch3\u003ePrecision Protection for 12V, 24V, and 48V LiFePO4 Battery Banks\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eVictron smallBMS NG\u003c\/strong\u003e (BMS400100000) is a compact, next-generation battery management system engineered to safeguard \u003cstrong\u003eVictron Smart LiFePO4 batteries\u003c\/strong\u003e in off-grid, marine, and mobile applications. Replacing the earlier miniBMS, this unit delivers reliable cell-level monitoring and control without the complexity or cost of a full VE.Bus BMS. It is purpose-built for systems where a VE.Bus interface is not required, making it an ideal match for standalone inverters, DC-DC converters, and solar charge controllers.\u003c\/p\u003e\n\u003cp\u003eDesigned for seamless integration with Victron’s M8 circular connector Smart Lithium batteries, the smallBMS NG actively prevents deep discharge, overcharge, and temperature extremes. Its three independent outputs—Load Disconnect, Charge Disconnect, and Pre-Alarm—provide layered protection that extends battery service life and enhances system safety. Whether you are building a \u003cstrong\u003e12V caravan solar setup\u003c\/strong\u003e, a \u003cstrong\u003e24V marine power system\u003c\/strong\u003e, or a \u003cstrong\u003e48V off-grid energy storage\u003c\/strong\u003e solution, this BMS ensures your lithium investment remains protected under all operating conditions.\u003c\/p\u003e\n\u003ch3\u003eThree-Stage Protection Architecture\u003c\/h3\u003e\n\u003cp\u003eThe smallBMS NG continuously monitors individual cell voltages and battery temperature via the Victron battery’s internal BMS communication. When parameters approach critical thresholds, it initiates a sequenced response:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Disconnect Output\u003c\/strong\u003e: Normally high (Vbat – 0.1V), this output transitions to free floating when any cell drops below the under-voltage threshold (default 2.8V\/cell, adjustable 2.6–2.8V). With a 1A source current limit, it can directly drive a high-current relay, contactor, or the remote on\/off input of a Victron BatteryProtect, inverter, or DC-DC converter. This prevents irreversible cell damage from over-discharge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-Alarm Output\u003c\/strong\u003e: Provides an early warning signal before load disconnect occurs. Normally free floating, it activates (Vbat – 0.1V, 1A max) when cell voltage falls to the pre-alarm threshold (default 3.1V\/cell, adjustable 2.85–3.15V). A minimum 30-second delay before load disconnect gives systems time to shed non-critical loads or start a generator, avoiding unexpected shutdowns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharge Disconnect Output\u003c\/strong\u003e: Normally high (Vbat – 0.6V), this output goes free floating to signal an imminent cell over-voltage or over\/under-temperature condition. With a 10mA source current limit and short-circuit protection, it is designed to control the remote on\/off of chargers, Cyrix-Li-Charge relays, or Cyrix-Li-ct Battery Combiners. This ensures charging stops before cells exceed safe voltage or temperature limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFlexible System On\/Off Control\u003c\/h3\u003e\n\u003cp\u003eThe Remote L and H terminals allow straightforward system-wide on\/off switching. Three control modes are supported: bridging L and H, pulling L to battery negative (\u0026lt;3.5V), or applying a high signal to H (2.9V to Vbat). This flexibility simplifies integration with external switches, BMS panels, or automated controllers, enabling a single point of control for both loads and chargers.\u003c\/p\u003e\n\u003ch3\u003eBuilt for Harsh Environments\u003c\/h3\u003e\n\u003cp\u003eHoused in a matt black ABS enclosure rated IP20, the smallBMS NG measures just 106 x 42 x 23 mm and weighs 0.1 kg. It operates across a wide temperature range of -20 to +50°C and tolerates up to 95% non-condensing humidity. The compact footprint allows installation in tight electrical compartments typical of caravans, boats, and equipment cabinets. Status LEDs provide immediate visual feedback: a blue Load ON indicator confirms active load output, while a red Temp or OVP LED warns of charge disconnect due to temperature or over-voltage events.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose the Victron smallBMS NG?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect compatibility\u003c\/strong\u003e with Victron Smart LiFePO4 batteries featuring M8 circular connectors—no additional interfaces required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide operating voltage range\u003c\/strong\u003e of 8–70 VDC supports 12V, 24V, and 48V nominal systems from a single model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-low power consumption\u003c\/strong\u003e: typically 2.2 mA when remote on, minimising parasitic drain on the battery bank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-alarm functionality\u003c\/strong\u003e reduces the risk of sudden system shutdowns by providing advance warning of low cell voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive-grade compliance\u003c\/strong\u003e to UN\/ECE-R10 Rev.4, plus safety and EMC standards (EN 60950, EN 61000-6-3, EN 55014-1, EN 61000-6-2, EN 61000-6-1, EN 55014-2), ensuring reliable operation in vehicle and marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eThe smallBMS NG is the preferred battery management solution for Victron lithium systems where a VE.Bus MultiPlus or Quattro inverter\/charger is not used. Typical installations include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCaravans and camper trailers with standalone inverters and MPPT solar controllers.\u003c\/li\u003e\n\u003cli\u003eMarine electrical systems using alternator charging via Cyrix-Li-ct relays.\u003c\/li\u003e\n\u003cli\u003eRemote off-grid cabins and tiny homes with DC-only or non-VE.Bus AC systems.\u003c\/li\u003e\n\u003cli\u003ePortable power packs and mobile workstation setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBy offloading critical protection functions to a dedicated BMS, you reduce the risk of cell damage, improve system reliability, and simplify wiring compared to generic or multi-brand solutions. The smallBMS NG is not suitable for use with VE.Bus inverter\/chargers; for those applications, consider the VE.Bus BMS.\u003c\/p\u003e\n\u003ch3\u003eProtect Your Lithium Investment\u003c\/h3\u003e\n\u003cp\u003eEquip your Victron Smart Lithium battery bank with the smallBMS NG and gain confidence that your cells are monitored and protected around the clock. \u003cstrong\u003eOrder the Victron smallBMS NG today\u003c\/strong\u003e and build a safer, longer-lasting energy system for your next adventure or off-grid project.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specifications\" style=\"width:100%; border-collapse:collapse; border:1px solid #d9d9d9; table-layout:auto;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eProduct\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003esmallBMS with pre-alarm BMS400100000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eOperating voltage (Vbat)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e8 – 70 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003ePower supply cable and fuse (not supplied)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eRecommended fuse size 0.3 A - 2.5 A, dependent on devices connected to Load disconnect and pre-alarm output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCurrent consumption, remote on\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e2.2 mA (excluding Load and Charge disconnect output current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCurrent consumption, low cell voltage\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e1.2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCurrent consumption, remote off\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e1.2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eLoad disconnect output\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eNormally high (Vbat – 0.1 V) Source current limit: 1A (not short circuit protected) Sink current: 0A (output free floating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCharge disconnect output\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eNormally high (Vbat –0.6 V) Source current limit: 10mA (short circuit protected) Sink current: 0A (output free floating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003ePre-alarm output\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eNormally free floating In case of alarm: output voltage Vbat -0.1 V Maximum output current: 1A (not short circuit protected)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eRemote on\/off\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eRemote 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 \u0026lt;3.5 V) 3. ON when the H terminal is high (2.9 V \u0026lt;VH \u0026lt;Vbat) 4. OFF in all other conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eOperating temperature range\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e-20 to +50 °C (0 – 120 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eHumidity\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eMax. 95 % (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eProtection grade\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eMaterial and colour\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eABS, matt black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e0.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eDimensions (h x w x d)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e106 x 42 x 23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eSafety\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eEN 60950\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eEmission\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eEN 61000-6-3, EN 55014-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eImmunity\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eEN 61000-6-2, EN 61000-6-1, EN 55014-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eAutomotive\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eRegulation UN\/ECE-R10 Rev.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":52364381815067,"sku":"VIC-BMS400100000","price":74.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0854\/3354\/9083\/files\/VIC-BMS400100000-01.jpg?v=1781657713","url":"https:\/\/www.nbcampingequipment.com.au\/products\/victron-minibms-smallbms","provider":"NB Camping Equipment","version":"1.0","type":"link"}