Connect 2 pack of 1S Lipo in serial as a saddle pack??

I want to use 1S LiPo for my 1/12 and also want to use 2 pack in serial for my vintage Pro10 (with T plate).

Any CHIng had tried to connect 2 pack of 1S LiPo in serial as a 2 Cell saddle pack??

Please advise.

Thanks,
I am not sure if the 1S lip for pan car is the same as those ordinary LiPo. If yes, I think it will be okay since those 966E also use 4 saddle in serial.
I want to know if there is any CHing really tried this out. I do not want to ruin my batteries.

Thanks.
I may buy 2piece of 1S LiPo then