Victron Small BMS
Features:
- Battery Management System
- Suits Victron Lithium Smart Batteries
- Charge Disconnect Output
- Connect up to 20 Batteries
- 5 Year Warranty
The Small BMS can replace the VE.Bus BMS in several applications. It is however not suitable for use with VE.Bus MultiPlus and Quattro inverter/chargers: it has no VE.Bus interface.
The Small BMS is intended for use with Victron Smart LiFePo4 batteries with M8 circular connectors. The Small BMS has three outputs, similar to the VE.Bus BMS.
Load Disconnect Output:
The Load output is normally high and becomes free-floating in case of an imminent cell under voltage (default 2.8V/cell, adjustable on the battery between 2.6V and 2.8V per cell). Maximum current: 10mA. The Load output can be used to control the remote on/off input of a Battery Protect, inverter, DC-DC converter or other loads.
Pre-Alarm Output:
The pre-alarm output can be used as a warning when the battery voltage is low and it will trip shortly before the Load Disconnect output is disabled due to cell under voltage. The pre-alarm output may be used to drive a relay, LED or Buzzer. It can be configured as a continuous or intermittent signal.
The pre-alarm output is normally free floating and becomes high in case of an imminent cell under voltage (default 3.1V/cell, adjustable on the battery between 2.85V and 3.15V per cell). Maximum current: 1A (not short circuit protected) The minimum delay between pre-alarm and load disconnect is 30 seconds.
Charge Disconnect Output:
The Charger output is normally high and becomes free-floating in case of an imminent cell over voltage or over temperature. Maximum current: 10mA.
The Charger output is not suitable to power an inductive load such as a relay coil. The Charger output can be used to control: The remote on/off of a charger, a Cyrix-Li-Charge relay, and a Cyrix-Li-ct Battery Combiner.
(Note: In some cases, an interface cable will be needed, please see the manual.)
The Charger Output Can be Used to Control:
- The remote on/off of a charger
- A Cyrix-Li-Charge relay
- A Cyrix-Li-ct Battery Combiner
System On/Off Input:
The system on/off input controls both outputs. When off, both outputs will be free-floating so that loads and chargers are turned off. The System on/off consists of two terminals: Remote L and Remote H.
A remote on/off switch or relay contact can be connected between L and H. Alternatively, terminal H can be switched to battery plus, or terminal L can be switched to battery minus.
Protects 12V, 24V and 48V Systems:
Operating voltage range: 8 to 70V DC.
LED Indicators:
-
Load ON (blue): Load output high (cell voltage >2.8V, adjustable on the battery).
-
Temp or OVP (red): Charger output free-floating (due to cell over temperature (>50°C), cell under temperature (<5 °C) or cell overvoltage).
Applications:
Marine
RV's
Caravans
Off-Grid Systems
Tiny Houses
Cabins
More about Victron:
Victron Energy has a strong, unrivalled reputation for technical innovation, reliability, and build quality. Their products are widely considered to be a professional choice for independent electric power. Efficiently combining two or more distinct power sources is what they do best. Their products include sinewave inverters, sinewave inverters/chargers, battery chargers, DC/DC converters, transfer switches, battery monitors and more.