First of all, before you chose a portable home battery or generator, you should know the watt capacity. For instance, when you take the case of a small camping generator, it can offer you anywhere between 1000 to 3000W. But, when it comes to heavy-duty generators, they can have a capacity of more than 10000W. To find out the generator size that your home needs, you should first evaluate your home’s energy needs. Start by listing the essential appliances that you will have to run using the home battery during an emergency power outage. It can be anything like a refrigerator, an AC or even smaller appliances. Calculate the total watts. Here, not only the running watts, you should calculate the starting watts of the appliances as well. Thanks to power requirement calculators available online to help you with this. Also, remember to choose a generator with a bigger watt capacity than your needs.