{"product_id":"qbp070146","title":"Victron Energy smallBMS NG Battery Management System, For Lithium NG Batteries, 8-70V, IP20","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Victron Energy BMS400100300 is a smallBMS NG battery management system for Victron Lithium NG batteries, built to protect an onboard lithium bank by controlling charge disconnect, load disconnect, and low-voltage pre-alarm functions. It works with Lithium NG battery systems arranged for 12V, 24V, or 48V service, with an operating voltage range of 8 to 70 Vdc.\u003c\/p\u003e\u003cp\u003eThis unit is a good fit for compact marine DC systems where the battery bank does not need VE.Bus communication. It connects with VictronConnect over built-in Bluetooth for monitoring, configuration, and firmware updates, and it receives state of charge and current data directly from compatible Lithium NG batteries, so a separate SmartShunt is not required for those values.\u003c\/p\u003e\u003cp\u003eThe enclosure measures 106 x 42 x 23 mm and uses a matt black ABS housing. Its IP20 electronics rating means it belongs in a dry, protected electrical space such as a distribution locker, battery compartment, or inside a console, away from bilge water, deck washdown, and salt spray.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eFor Victron Lithium NG batteries only; not compatible with Victron Lithium Battery Smart batteries.\u003c\/li\u003e\n\u003cli\u003eSupports Lithium NG banks configured for 12V, 24V, or 48V systems.\u003c\/li\u003e\n\u003cli\u003eBuilt-in Bluetooth works with VictronConnect for setup, monitoring, firmware updates, and quick status checks.\u003c\/li\u003e\n\u003cli\u003eLoad disconnect output can control compatible remote on\/off inputs to help prevent deep discharge.\u003c\/li\u003e\n\u003cli\u003eCharge disconnect output can stop compatible chargers when cell overvoltage or overtemperature is detected.\u003c\/li\u003e\n\u003cli\u003ePre-alarm output gives a visible or audible warning before load disconnect occurs during low-voltage conditions.\u003c\/li\u003e\n\u003cli\u003eRemote on\/off terminals allow the charge and load disconnect outputs to be switched from an external control point.\u003c\/li\u003e\n\u003cli\u003eBlue and red LED indicators show Bluetooth status, warnings, and errors at the unit.\u003c\/li\u003e\n\u003cli\u003eCompact 106 x 42 x 23 mm size helps it fit into crowded marine electrical panels and battery installations.\u003c\/li\u003e\n\u003cli\u003eIP20 electronics rating suits protected interior mounting rather than exposed deck, cockpit, or bilge locations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eCompatibility and fit\u003c\/h6\u003e\u003cp\u003eThis BMS is intended for Victron Lithium NG battery installations and is not the correct match for older Lithium Battery Smart models. It also lacks a VE.Bus interface, so it is not the right control choice for VE.Bus inverter\/chargers such as MultiPlus and Quattro units.\u003c\/p\u003e\u003cp\u003eFor a boat with a Victron Lithium NG house bank, this unit covers the core protection needs without adding unnecessary system complexity. It is especially relevant for smaller cruising, fishing, and auxiliary DC systems where chargers, DC-DC converters, inverters, or BatteryProtect devices can be controlled through remote on\/off connections.\u003c\/p\u003e\u003ch6\u003eInstallation and setup\u003c\/h6\u003e\u003cp\u003eMount the unit on a flat surface in a dry electrical area and keep wiring runs as short and orderly as practical. The removable 7-pin terminal block helps with wiring in tight panels, and the remote on\/off connection must be completed with the supplied loop or a suitable external switch arrangement for correct operation.\u003c\/p\u003e\u003cp\u003eAfter wiring, use VictronConnect to check the detected battery configuration and adjust the available BMS settings. Since this device manages critical charge and load control for a lithium bank, installation should follow the electrical design of the vessel and the connection requirements of the batteries, chargers, and controlled loads.\u003c\/p\u003e\u003ch6\u003eElectrical and system integration\u003c\/h6\u003e\u003cp\u003eThe load disconnect output has a maximum source current of 1 A, while the charge disconnect output is rated up to 500 mA. The pre-alarm output is rated up to 500 mA and can be used with a relay, LED, or buzzer to warn crew before the system removes loads because of low cell voltage.\u003c\/p\u003e\u003cp\u003eTypical marine integration includes linking the charge disconnect output to compatible solar chargers, DC charging equipment, or charge relays, and using the load disconnect output with compatible inverters, DC-DC converters, or BatteryProtect devices. The result is a cleaner lithium installation where the BMS can protect the battery bank without requiring manual intervention during fault conditions.\u003c\/p\u003e\u003ch6\u003eWhat’s included\u003c\/h6\u003e\u003cul\u003e\u003cli\u003esmallBMS NG with removable 7-pin terminal block\u003c\/li\u003e\u003c\/ul\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":52581877153973,"sku":"QBP070146","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1332321_qbp070146.png?v=1780201056","url":"https:\/\/www.qualityboatparts.com\/products\/qbp070146","provider":"Quality Boat Parts","version":"1.0","type":"link"}