Just want to add to the previous information with a real world example to minimize voltage sag of otherwise saggy cells.
Below is the battery in my cargobike, and the cells are crap for high discharge applications.
But put enough cells in there and each cell will have an easier job for a specific power output, and it becomes a low discharge application.
In this case, the battery only need to put out 0,2-0,5C for enough performance.
This also means I typically ride 5-6hours on a single charge. The drawback is ofcourse the weight.
Which is less of a drawback on a cargobike. The main reason for this compromise, is to be able to use cheap cells and still get decent energy density + life expectancy.
This does in turn give the required distance between charges and removes range anxiety.
The cell being used is the LG D1. 3000mAh 4,35V capable cell.
I charge the cells to between 4,15V and 4,2V depending on occasion and expect to have around 2500mAh if fully discharging (down to 3,0V).
This still equals 4kWh+ of energy.
Today there are more cheap cell options than 3years ago!