Questions and Answers
Depending on the amount of load that will be working. If the power of the turned-on electrical appliances is maximum (for HomeKit 5 - 5kW), then approximately 1 hour. In proportion to the decrease in the number of working electrical appliances, the system's operating time without recharging will increase
There are several options.
The first and simplest is to reduce the load powered by the batteries. You can reserve not all devices at home, but only the most necessary ones.
The second is to add photovoltaic modules or a diesel generator to the system; they can recharge the system and prevent it from shutting down. If the system has both photovoltaic modules and a diesel generator, it becomes practically autonomous and can operate without the external grid.
The third option is to increase the number of batteries.