Combine balance taps for 2x 2S2P as one 4S

[BrianG]

It's kinda hard to explain in words, but take a look at the bottom of this page. That should help you visualize what is meant by daisy-chaining.

If you are hesitant, I would see if you can get a cable pre-made to do what you want. If done incorrectly, you could literally burn up a balancer wire if hooked up wrong, but it depends on how you have it set up.