Batrium Battery Management Systems are an Australian Company who developed their BMS out of frustration of not finding a good quality and affordable system for their electric car conversion.
Batrium sell a range of lithium battery monitoring modules that have been designed, manufactured and tested by Batrium.

Overview
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configurable to suit LiFePO4, Lithium-Ion or custom chemistry
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With distributed cellmonitors capable of 28 Ah/day balancing adjustment for each cell
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user configurable presets and controls
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Link to Shuntmon with 500A or 1000A power rating
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Easy to use pluggable screw-terminal connectors.
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Configurable 2 inputs and 2 outputs (i.e. remote circuit breaker trip, contactor or fan)
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Additional inputs/outputs via ExpansionBoard purchased separately
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data logging of key metrics for 10 years
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Clock with backup battery
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firmware upgrades via USB
Remote Communication
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WiFi connectivity (normal, disabled, or read only)
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Opto-Insulated CAN bus to remote charger/inverter equipment
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future feature to connecting to cloud portal via MQTT (secure link).
Power Input
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Built-in 8v to 65v DC-DC supply
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handle automotive transients
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consumes with WiFi enabled ~1.7W (Typical 48v battery budget 1Ah/day)
