Lithiumate Lite BMS for 12 cells

Lithiumate Lite BMS for 12 cells

Elithion Lithiumate Lite system is a digital BMS, specifically designed for electric car conversions. This BMS monitors, evaluates, balances and protects a Li-ion battery pack.

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390,00 € tax incl.


Availability: This product is no longer in stock

0 item in stock

We are consolidating our product line and therefore are discontinuing the
Lithiumate Lite BMS.  We will continue to support current owners of the
Lite with repair service and spare parts as available.  The Lithiumate
Pro is still available with all of the compatible components available.



1 2CN0008E Master
1 EUZ0300CS Current sensor
1 2CS0000K Current sensor cable
46 1PR0106M Mid cell board, Prismatic, M8 bolt, 106 mm max spacing
3 1PR0106P Positive cell board, Prismatic, M8 bolt, 106 mm max spacing
3 1PR0106L Negative Lite cell board, Prismatic, M8 bolt, 106 mm max spacing
1 1BR4444K 4 foot / 1.2 m breakout
1 EYD5814MS RJ45 cable, 3 ft / 1 m
1 EYD6025PS USB cable

Elithion logo


Lithiumate Lite Overview



General description of the digital BMS for EVs

Block diagramBlock diagram Lithiumate Lite BMS

The BMS is powered:

  • By the 12V from the ignition, when the EV is on
  • By the AC power whenever the EV is plugged into the wall


The BMS is connected to

  • The traction pack
  • The charger
  • The motor controller



Battery Management


  • Measures and reports the cell voltages and temperatures in up to 8 banks of cells in a battery pack
  • Measures and reports the battery pack current (bidirectional load current up to 900 A; charger current up to 30 A)



  • Calculates and reports the State Of Charge of the battery pack



  • Balances the battery pack
  • Dissipative (passive) balancing
  • Top balance, voltage based



  • Turns off charger if any cell voltage exceeds a maximum, or the charging current is excessive
  • Requests a reduction of motor drive if the battery is nearly empty
  • Requests that motor controller be turned off if any cell voltage drops below a minimum, or the discharging current is excessive
  • Disables charging and/or discharging if any cell's temperature is outside a range
  • Disables charging and discharging if any cell board or bank stops reporting
  • Prevents driving off when the vehicle is still plugged into the AC outlet



Charger InterfaceCharger interface Elithion Lithiumate Lite BMS

AC power connector

  • AC Line input from the vehicle's AC plug (85-260 Vac)
  • LED to indicate that AC power is present


Charger current sensor

  • 30A, charger DC output current sensor


No connector assembly required:

  • AC power connector is a 2-piece, screw clamp, terminal block
  • Charger current sensor uses ring terminals mounted on screw terminals



Vehicle traction interface

Ignition power inputVehicle traction interface Elithion Lithiumate BMS

  • 12V nominal, 50mA nominal (no external loads) 
  • LED to indicate that Ignition Power is present


Cable mounted current sensor

  • Ready to plug-in
  • Bidirectional, 900A max.


"Discharge OK" line, normally at 12V, open when battery cannot deliver current

  • Wire to the key input of the motor controller, or use to drive the main contactor
  • Wire to a "Ready" lamp on dashboard


"Low Battery" line, normally at 12V, open when battery charge is low

  • Wire to the "Valet" input of the motor controller, to reduce available drive
  • Wire to a relay to add resistance to the throttle, to reduce its range
  • Wire to a "Reserve" lamp on dashboard


"Throttle Reduce" output, to reduce throttle range (2 or 3-wire pot, not HEPA)

  • Insert in the "Wiper" line, between throttle and motor driver (for 3-wire throttle, a resistor must ve added)
  • Wire to a relay to add resistance to the throttle, to reduce its range
  • Isolated, for compatibility with motor drivers with pack referenced throttle


"Charge OK" line, normally at 12V, open when battery cannot accept current

  • Wire to the "Regen Enable" input of the motor controller, to disable regen
  • Wire to brake pedal pot, to disable regen


"Fault" line, normally open, grounded when a fault is detected

  • Wire to a "BMS fault" lamp on dashboard
  • LED to indicate that there is a fault

No connector assembly required:

  • Load current sensor comes with a connector
  • Control connector is 2-piece, screw clamp, terminal block



Traction Pack Interface

Traction Pack Interface Elithion Lithiumate Lite BMS

The BMS uses cell boards mounted directly onto prismatic cells

  • Up to 200 cells in series in a pack
  • Divided into banks
  • Each bank between 2-20 cells in series; recommended (some users have used up to 25 cells)
  • Cells directly in parallel count as one cell and use just inbe cell board
  • Each bank has one positive end cell board, one negative end, and the rest are mid cell boards
  • Each cell board measures its cell's voltage & temperature
  • Positive end and negative end cell boards include an isolator to isolate the high voltage of the pack from the 12V supply



Bank connectors

  • Uses up to 4 each, RJ45 cables Bank connectors Elithion Lithiumate Lite BMS
  • Each RJ45 cable connects the master to a breakout
  • Each RJ45 cable and breakout handles 1 or 2 banks
  • A breakout has 4 cables: two for positive end cell boards, 2 for negative end cell boards 

No connector assembly required:

  • Bank connections use off-the-shelf shielded RJ45 modular Ethernet cables (0.5 to 4 meters, as appropriate for the application)
  • Complete modular cables are readily available from numerous sources
  • Breakout at other end of modular cable is fully assembled 



Monitoring & Configuration


17 status LEDs on master17 status LEDs on master BMS Elithion Lithiumate Lite

  • "AC Power in": lit if powered by the AC line
  • "Ignition power": lit if powered by the Ignition line
  • "Charge OK": lit if charging is enabled
  • "Discharge OK": lit if discharging is enabled
  • "Warning": lit if the battery is nearly empty
  • "Fault": lit if a fault was detected
  • "Status": normally fully lit; in case of fault it flashes a code for the fault
  • An LED for each bank indicates the satus of the communications for that bank
  • Two LEDs by the USB connector flash when data is transmitted and received



Gauges for Elithion Lziumate Lite BMS

Three gauges on dashboard

  • Drives standard fuel gauges (emulates fuel tank "sender") 
    • Configurable to match sender's characteristics (min. and max. resistance, direction)
    • May be configured to drive a 5V full scale meter
  • Drives meters: battery current & voltage
    • For 5V full scale meters 
    • Full scale value configurable to match full scale on meter's face plate
    • Designed to operate with popular Westach gauges
  • Every controller LED function may be duplicated on dashboard with 12V lamps




Graphical User InterfaceGraphical User Interface Elithion Lithiumate Lite BMS

  • Computer based monitoring and configuration
  • USB port for easy interface to the computer 
    • Uses a standard USB cable (no adapter dongle is required) 
  • Windows™ user interface
    • Basic configuration takes only 4 steps
    • One screen displays the complete status of the battery and the BMS






AC power connector:Front Panel Elithion Lithiumate Lite BMS

  • AC power input; 85-265 Vac


USB connector:

  • For connection to PC, during set-up and for troubleshooting 


Current sensor connectors:

  • Battery current sensor screw terminals, 30A max.
  • Connector for prewired 900A bidirectional load current sensor



Bank connectors:

  • 4 connectors; each for 2 banks
  • Each connector has 2 LEDs, one for each bank, to indicate its status
  • Uses standard shielded RJ45 modular cables

Control connector: (clockwise from top)
Two-piece terminal block, screw clamps

  • Meter outputs:
    • Pack voltage meter, configurable range, for 5Vfs voltmeter
    • Pack current meter, configurable range (may go negative), for 5Vfs voltmeter (may be bi-directional)
    • Pack SOC meter, emulates fuel gauge sender, configurable resistance, or for 5Vfs voltmeter
  • Power outputs:
    • 12V when powered by the AC line (0.3 A max)
    • 12V when powered either way (1A max. if powered from the Ignition line, 0.3A max if powered by the AC line)
    • 5V when powered either way (50mA max.)
  • Power input:
    • 12 V from the Ignition line
  • Control outputs:
    • Charge OK: normally 12V, open if charging is not allowed
    • Discharge OK: normally 12V, open if discharging is not allowed
    • Fault: normally open, 12V in case of fault
    • OK: normally 12V, open in case of fault
    • Warning: normally open, 12V at the end of battery charge
    Throttle: normally open, gradually lower resistance at the end of battery charge




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