are there portable battery packs for electric cars

Yes, electric cars come with portable battery packs. For example, ZipCharge has developed a portable battery pack in the form of a suitcase called ZipCharge Go. This type of battery pack can provide power for electric vehicles without charging stations, similar to the principle of backup batteries for charging smartphones or tablets. It can be charged on a simple household socket and can restore autonomy from 65 kilometers to 100 kilometers in one hour, with a capacity of 4 or 8 kilowatt hours