Have a look
here mate for how you would need to wire up the balance leads - you can do it, it just means you are charging them as a 4s pack instead of a 2s. I can see a drawback if your cells are a little older/out of balance as it could take a long time for the charger to get all four cells in balance so could take longer than usual. I have those intellect cells and I have wondered why they don't say 1/2 2/2 myself too! I guess they snuck through the QC process before printing...