Cristec Battery Monitor

Cristec Battery Monitor



  • Battery monitor
  • One kit shunt (250A/100mV) to monitor one battery bank
  • 10m RJ11 cable to monitor one battery


  • Kit shunt to monitor an additional battery = a 250A/100mV shunt and a 10m RJ11 cable (the system can monitor 3 batteries maximum - 1 kit shunt is required for each battery)
  • Temperature sensor to monitor one battery (the system can only monitor the temperature of 2 batteries maximum - 1 sensor per battery)
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Battery Monitors

One of the key pieces of equipment in any battery based stand-by or off-grid installation is a battery monitoring system.  It is not accurate enough to use battery voltage as the primary indication of charge state.  The state of charge of a battery bank is fundamentally the battery voltage, but temperature of the battery must be taken into account and certainly, if the battery is working (being charged or discharged), the voltage is affected and so it is not an accurate reflection of the true SoC (State of Charge) at any point in time.  Using Peukerts coefficient and an algorithm in a microprocessor coupled to a shunt, modern battery monitors can accurately establish SoC, time to run before battery exhaustion, percentage of charge remaining and alert the end user when the batteries must be recharged.