Product profile: Advanced battery monitoring

Trimetric display

If you have a battery-based renewable energy system then adequate battery monitoring is important. Just reading battery voltage isn’t enough to tell you what is happening to the battery through each charge/discharge cycle.

The Trimetric TM-2030-A battery system monitor from Bogart Engineering provides important information on your battery bank condition, including battery capacity remaining, displayed as a percentage (based on amp-hour monitoring, not battery voltage).

Other information displayed includes battery charging or discharging (displayed in amps or watts), battery voltage (the meter can handle voltages from 9 to 75 V and capacities from 10 to 10,000 Ah), the days since the batteries were last fully charged and the days since the batteries were last fully equalised.

Another interesting function is the replaced percentage of charge display, which shows how much energy the battery has received compared to the most recent discharge, so you can ensure the battery bank is receiving appropriate levels of input.

There is also an audible low battery alarm, based on volts and the capacity monitoring, which can be silenced. The unit also logs data for the last five charge/discharge cycles to allow easier diagnosis of system problems.

Available from Australian Solar Industries, PO Box 21, Laidley QLD 4341, ph: (07) 5465 2218, Also see

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