I don't NEED a new phone tho guise...I just want more battery life!
I've tried battery cases, they burn out pretty fast
The reason is, they got hot, Real Hot.. because you have the charging /discharge losses from now
2x batteries, and it's all bundled up next to the also hot processor.
the boards inside the charging cases easily fry out if you have to charge in your pocket, which at times are unavoidable.
So..... overall , battery cases are not recommended, except for removable battery phones, where it's only 1x battery, which replace the main battery, like those 8000mah galaxy s5 cases.. Those are awesome..
to quote a friend; dude, you can fap for 2 straight days with 8000mah