Micro inverter connected to battery

Yes you can easily add batteries with micro inverters such as Enphase! You simply use a technique called "AC Coupling" where the batteries are connected directly into the 240V AC in the switchboard using an AC Battery inverter. Here's how it works:

If you try to feed a 25V solar array directly into both a 25V battery and a Microinverter in parallel, it will not work (at least not on the same way where output is limited by the DC-DC converter rather than the solar array). You could also use an AC charger to charge the 12V battery to achieve a time-shift solution without needing a solar array….

To connect the battery to the limiter/inverter, first connect the inverter to AC power. Then, through the SET {Bat AutoLimit Grid} for Y 4, enter the 'battery grid connection' in the inverter LCD. The inverter will automatically output the same power as the power detected by the collector.

And then if course, after sunset, stored battery energy can be used to offset load or power a separate overnight inverter. Heck, as long as the output voltage of the DCDC power supply is close to the MPPT voltage of the solar array, both can actually be connected in parallel to the Microinverter (in the late afternoon, for example).

You simply use a technique called "AC Coupling" where the batteries are connected directly into the 240V AC in the switchboard using an AC Battery inverter. Here's how it works: As you can see, the output of the micro inverters is 240V AC and the Battery Inverter converts the battery's DC to 240V AC, so everything works together nicely.

Rather than being limited by available solar power, the Microinverters output is limited by the max output of the DC-DC converter, at night but also during the day.