Question Doubts about battery storage.

[cloudff7ps1]

What is the best long-term storage voltage for Li-Ion and Li-Po batteries? removable smartphone batteries i have chinese Nokia BP-5L and Xiaomi BM20 do you have any studies that prove the best voltage or voltage range for long term storage?

 

[cloudff7ps1]

the BM20 and BP-5L batteries I use in a portable console but these batteries and this console haven't been released on the market recently so it's hard to get them both every 5 years

air conditioning is very expensive it uses a lot of electricity but the ambient temperature in my city is this

in my room I use a dehumidifier with compressor and it leaves the humidity 55-60% but it doesn't change the temperature, is it worse high humidity or high temperature?

 

[DSzymborski]

the BM20 and BP-5L batteries I use in a portable console but these batteries and this console haven't been released on the market recently so it's hard to get them both every 5 years

Again, the fact that you want to do something has no bearing on whether that something is a practical thing to do.

Just like in your previous, similar threads, your plan is fundamentally flawed and there's no magical "fix" to make it anything but.