Merlin SmartGauge Battery Monitoring System

Merlin SmartGauge Battery Monitoring System
Merlin SmartGauge Battery Monitoring System
Brand: KME
Product Code: Merlin SmartGauge Battery Monitoring System
RRP Inc VAT: £193.14
Our Price: £125.00
Price Ex VAT: £104.17
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Merlin SmartGauge Battery Monitoring System


Conventional battery monitors use a Current Measurement Shunt to ‘count’ amp hours in/out of a battery. The problem is that an amp hour changes according to temperature, discharge rate, charge rate and condition of the batteries. This means that conventional monitors run out of synchronisation and after a time can display misleading information.


SmartGauge uses a completely different type of monitoring method. Real-Time battery measurements and proprietary algorithm coupled to computerised battery models allow SmartGauge to always provide real-time battery % of charge remaining AND will never run out of synchronisation with the battery. What’s more, installation is easier and SmartGauge can be easily used and understood by all crew members.


In recent independent tests by leading battery manufacturer, Enersys, SmartGauge was found to be more accurate than conventional battery monitors.

SmartGauge displays the battery voltage for your domestic battery bank and % remaining. Conventional monitors always show % remaining of theoretical capacity when the battery was new – not actual. Bearing in mind that batteries lose around 10% of capacity per year, this means that inherent inaccuracies grow.


SmartGauge displays real-time capacity remaining so you are never surprised by running out of power early.


SmartGauge will also display battery voltage for your engine battery. It is fitted with a high/low voltage alarm for each battery and low % remaining alarm.


A volt-free contact on the rear of SmartGauge allows you to trigger external alarms, auto generator start etc.

Super quick 2 or 3 wire installation. No shunts to install. No cables to be cut into thus factory warranties remain intact.

Without doubt the simplest monitor to understand.


  • Battery state of charge (percentage) for main auxiliary battery bank.
  • Battery voltage for 2 battery banks.
  • Ultra low power consumption.
  • User programmable alarms for low voltage, high voltage, low status etc.
  • "Shuntless" design for super quick installation.

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KM Electronics Ltd - Brooke Business Park - Heath Road - Lowestoft - Suffolk - NR33 9LZ - UK