The voltage of a lithium battery unit is 2V.
Just like your common single dry cell battery, the voltage is 1.5V whether it is a #1, #5 or #7 battery. dry cell.
The 48V lithium battery is composed of 4 groups of small batteries, each of which is 12V, and a 12V small lithium battery is composed of 6 single 2V lithium batteries. They are all connected in series, so 10 A for each small battery. of the lithium battery is 10a, which is not directly related to the number of V.