Is there a way to increase the battery life of the PinePhone?

[bcnaz]

I would like to know if there is a way to increase the battery life of the PinePhone as it is very difficult to last all day (even when doing almost nothing).

I have already :
- disable wifi/4G/bluetooth
- disable automatic rotation
- adjust the brightness to the strict minimum
- close background applications

And it is enough that during the day I receive two or three calls of barely a minute and that I take ten photos so that I find myself at less than 10% after ten hours.

So if someone would have a solution to this problem I would be grateful for it.

Thanks in advance

The new keyboard is an available option now, I am using one now,
It has a double sized battery in it, added to the phones battery, it gives triple the current runtime.
It is a bit larger package this way, it is now sort of a mini laptop.
My first post using the keyboard.