Hello All.

I'm new here.

I need help to calculate battery capacity for UPS I planned.

I want to buy a Inverter with UPS mode.

The inverter have :

- 24VDC Input

- 220VAC 3000Watt Output

- Eficiency 90%

I need to have 6 or 12 hours backup time at Full Load (3000Watt).

So how many AH (amps hours) I should prepare and how to calculate that ?

What I know is I need to make 2 x 12V battery in serial to get 24V.

Many thanks.

I'm new here.

I need help to calculate battery capacity for UPS I planned.

I want to buy a Inverter with UPS mode.

The inverter have :

- 24VDC Input

- 220VAC 3000Watt Output

- Eficiency 90%

I need to have 6 or 12 hours backup time at Full Load (3000Watt).

So how many AH (amps hours) I should prepare and how to calculate that ?

What I know is I need to make 2 x 12V battery in serial to get 24V.

Many thanks.

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