Sorry your answer is not clear to me:

You say that I can mix batteries or that I'm allowed to stack a few (but not too much!) of them. That would be ok.

But in the last sentence you say that it is not recommended to stack more than only one battery because of safety.

That means, it is unsafe to stack batteries in the M5stack fire ?

Hi.

Yes I mean the battery module.

It is safe to mix them? Because the M5GO Bottom has 600mAh and the battery module has 700mAh.

Is it ok to mix them? There are several security hints in some web shops that point in different ways.

Hi,

I'm a little bit confused about if I'm allowed to add the power module to my M5Stack Fire Core module together with the M5GO bottom module.

Some docs say that it's not ok, others say, it is ok to mix power modules.

Which one is correct?

Thanks and greetings,

Josef