Is it possible to change the battery icon?

[Japandroid]

This might be a bit of a silly question, but I'm asking on behalf of my niece. She's a big Zelda fan, so she's wondering if there's anyway to change the battery remaining icon to this...

Thanks

 

[lsbe]

There's a guide here My GF is working on making this now (I'm poo at graphic design ><)