New to electric Battery Help

[rgrpm]

Newbe battery question, Can I mix my LIPO batteries, If I use a 7.4 30C battery and a 11.1 30c battery in my brushless
boat if the esc and motor are rated for max voltage and total cell ratings are higher than the total above? what are the problems with this
combination? Could I mix them with different C ratings? HELP, and Thank You!

[video200]

you can use them in series to get 5S IF they have the same MAH.
if they have different MAH i would not mix them.

[rgrpm]

Thank You!! the C rating does not matter?

[video200]

yes it matters.
but sinse you have 2 30C batteries already you already have the right C for them

[rgrpm]

I have several batterys with diff c ratings and mha's So they must match, Thanks again