VE.Bus BMS for Victron Lithium Batteries
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VE.Bus BMS for Victron Lithium Batteries
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Protects each individual cell of a Victron lithium iron phosphate (LiFePO4 or LFP) battery

Each individual cell of a LiFePO4 battery must be protected against over voltage, under voltage and over temperature. Victron LiFePO4 batteries have integrated Balancing, Temperature and Voltage control (acronym: BTV) and connect to the VE.Bus BMS with two M8 circular connector cord sets. The BTVs of several batteries can be daisy chained. Up to ten batteries can be paralleled and up to four batteries can be series connected (BTVs are simply daisy-chained) so that a 48V battery bank of up to 3000Ah can be assembled. Please see our LiFePO4 battery documentation for details.

The BMS will:

- shut down or disconnect loads in case of imminent cell under voltage,

- reduce charge current in case of imminent cell overvoltage or over temperature (VE.Bus products only, see below), and

- shut down or disconnect battery chargers in case of imminent cell overvoltage or over temperature.

 

Protects 12V, 24V and 48V systems

The operating voltage range of the BMS: 9 to 70V DC.

 

Load Disconnect

The Load Disconnect output is normally high and becomes free floating in case of imminent cell under voltage. Maximum current: 2A.

The Load Disconnect output can be used to control

- the remote on/off of a load, and/or

- the remote on/off of an electronic load switch (Battery Protect)

 

Charge Disconnect

The Charge Disconnect output is normally high and becomes free floating in case of imminent cell over voltage or over temperature. Maximum current: 10mA.

The Charge Disconnect output can be used to control

- the remote on/off of a charger and/or

- a Cyrix-Li-Charge relay and/or - a Cyrix-Li-ct Battery Combiner

 

LED indicators

- Enabled (blue): VE.Bus products are enabled.

- Cell>4V or temperature (red): charge disconnect output low because of imminent cell over voltage or over temperature.

- Cell>2,8V (blue): load disconnect output high.