Separate batteries and auxiliary engines

[nightraven1901]

I would like to have these two components divided into two different options. I want to be able to add both secondary engines and electric batteries at the same time. I want to be able to add secondary engines to each main-calibre turret, too; a dedicated secondary engine to the rudder control systems. I'd also like control the amount of batteries present- which should determine the length of time their benefits apply.

Just an idea...