The ideal size and capacity of a home battery depends on several factors, including the household's energy consumption, the desired level of energy independence, the type and size of solar or wind energy systems used (if applicable), and the space available for installation.
In general, it is important to size a home battery based on the household's daily energy consumption and the expected duration of periods without mains power (e.g. at night or during power outages). A typical guideline is to choose a battery large enough to power the household for one to several days, depending on needs and available budget.
The weight of the battery depends on the type of battery technology used (e.g. lead-acid, lithium-ion, etc.), as well as its capacity. In general, home batteries weigh ranging from a few tens of kilograms to several hundred kilograms, depending on their size and technology. It is important to consider weight during installation and ensure the location is suitable to support the weight.
For specific advice regarding sizing and installing a home battery, it is recommended to consult a professional installer who can take into account the specific circumstances and needs of the household.