The Victron miniBMS/smallBMS with pre-alarm is a cutting-edge battery management system designed to safeguard your Victron Smart LiFePo4 batteries with utmost precision and efficiency when not being used with a MultiPlus and Quattro inverter/charger systems due to no VE.Bus. Engineered by Victron Energy, a leader in renewable energy solutions, this compact BMS is packed with advanced features to ensure the longevity and optimal performance of your Victron Lithium Battery Smart system.
Designed for seamless integration into your energy storage setup, the Victron miniBMS/smallBMS offers comprehensive protection against overcharging, over-discharging, and short circuits. The pre-alarm function provides an early warning system, alerting you to potential issues before they escalate, allowing you to take proactive measures to prevent damage to your batteries.
Equipped with intelligent balancing technology, this BMS ensures that each cell in the battery bank is maintained at the same voltage level, maximising the overall capacity and efficiency of the system. The user-friendly interface allows for easy monitoring of vital parameters such as voltage, current, and temperature, giving you full visibility and control over your battery system.
Features
- Load disconnect output: Can be used to control the remote on/off input of a BatteryProtect, Inverters, DC-DC converter or other loads that have remote on/off port functionality. Due to its maximum output current of 1A, it can even control a high-current relay or a contactor. Note that a non inverting or inverting on/off cable may be required, please consult the manual.
- Pre-alarm output: The pre-alarm output can be used to issue a visible or audible warning when the battery voltage is low and will trip with a minimum delay of 30 seconds before the Load disconnect output is disabled due to cell undervoltage.
- Charge disconnect output: Can be used to control the remote on/off port of a charger, such as the Smart Charger IP43, a Cyrix-Li-Charge relay, a Cyrix-Li-ct Battery Combiner or a BatteryProtect. The output is normally high and becomes free floating in case of imminent low cell voltage or high/low temperature. Note that the Charge disconnect output is not suitable to power an inductive load such as a relay coil. smallBMS Cyrix Combiners designed for use with the smallBMS and the VE.Bus BMS: Cyrix-Li-ct (120A or 230A) Is a battery combiner with a Li-ion adapted engage/disengage profile and a control terminal to connect to the Charge Disconnect of the BMS. Cyrix-Li-Charge (120A or 230A) Is a unidirectional combiner to insert in between a battery charger and the LFP battery. It will engage only when charge voltage from a battery charger is present on its charge-side terminal. A control terminal connects to the Charge Disconnect of the BMS.
- Remote on/off terminal: Both the Load and Charge disconnect output can be controlled remotely via the remote on/off terminal. When off, both outputs will be free floating so that loads and chargers are turned off.
- LED indicators: The smallBMS has two LED indicators, a blue LED indicating that the Load disconnect output is still high and the cell voltage is above the threshold set in the battery, and a red LED indicating that the Charge disconnect output is low due to high/low cell temperature or high cell voltage.
