Pod weapons should require energy like the smaller guns

[Kotlol]

Alas pods are kinda cruddy

weapons do have an energy system of sorts, in that the engine can only provide so much power for all the shit you've got on. Unfortunately a lot of pods stems from the bad old days when things had way too little feedback so that isn't clear.

You can just up the power requirements for some of the weapons so the pods at least needs a stronger engine.

Essentially this also explains Science wise why they don't need to recharge, the engine is constantly recharging them.
That said.. maybe pods need fueling and using your guns drains it faster.
It would be cool if "subs/pods" have fuel or an energy source that needs recharging.
if your power ever drops to 0, your pod has no systems and is dead in the water like having no engine!

Thus excessive fire might result into you being stranded.