What's the difference between AC or DC coupling?

What's the difference between AC or DC coupling?

Features

A.C. Coupled Batteries

D.C. Coupled Batteries

Battery Connection

Directly to switchboard

To hybrid solar inverter (which connects to switchboard)

Allow Battery to Charge From Grid

Yes (can take advantage of cheap off-peak power)

No

Efficiency

90%

95%

Best For

Retrofitting existing solar panel systems

Installing along with a new solar panel system


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