question

i-jaghoori avatar image

The Best Battery Protection Equipment

I have a Multiples inverter/charger. I use it to charge my three parallel strings of 24 volt Trojan batteries. When setting up the inverter's DC cut-off voltage, pre-alarm voltage, etc., I used the the SOC voltages given by the battery manufacturer. Obviously these voltages are open circuit voltages. My question is, is the inverter capable of compensating for the difference in open-circuit voltage and the voltage under load/charge when deciding, for instance, that the battery's SOC is where it should sound the pre-alarm or cut-off power?

What is the best way to go about protecting my batteries against low discharge. I would like to consider all options and know about their pros and cons. The batteries are also being charged from a small array of solar panel using the Victron MPPT charge controller. Obviously right now the inverter/charger doesn't know that the batteries are being charged from solar as well, and if possible, I would like to interconnect the two so that somehow I can maximize my utilization of solar power by giving priority to the the solar charger.

Thank you in advance.

MPPT - Solar Charge ControllerPhoenix Invertercharging battery
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2 Answers
i-jaghoori avatar image
i-jaghoori answered ·

Thank you. I’ll go through these.

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Alexandra avatar image
Alexandra answered ·

@i jaghoori

You would need a GX like a cerbo, venus or a color control device to bring the whole system together.

https://www.victronenergy.com/panel-systems-remote-monitoring

The inverter with ess assistant programmed can compensate for loads bringing the battery voltage down under load with the dynamic cut off voltages.

https://www.victronenergy.com/media/pg/Energy_Storage_System/en/ess-introduction---features.html

Battery balancing and battery rotation would be important for maintaining your battery bank.

https://www.google.com/url?q=https://www.victronenergy.com/batteries/battery-balancer&sa=U&ved=2ahUKEwi83aSSvqbvAhXeShUIHSpPBn4QFnoECAUQBA&usg=AOvVaw0OWYRPJ8kSo7PkQCgaqRil

And the book wiring unlimited linked below would be a good read for you.

https://www.google.com/url?q=https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf&sa=U&ved=2ahUKEwiu2pWtvqbvAhWmQxUIHV2oABcQFjAAegQIChAB&usg=AOvVaw3pJ6c7C0QV_xTOs5SaTYeo

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