Ohmmu LFP battery in a Gen 5 Prius ?

I'm curious, why are so many people swapping out their 12v so soon?

I run a 700W RMS amplifier (4x50W @ 4ohm, 1x500W @ 2ohm) and the stock 12v keeps up without a sweat.

 

Nah, but I do have my cig port USB adapter that shows voltage. Have had it since my last car and on my last car it measured just 0.12v lower than what I measured at the battery with a multimeter. Didn't bother to test it vs this vehicle because there's likely not enough distance in wire run vs my old car to make resistance a notable factor.

Never seen voltage dip below 12.4v, when it stops charging it'll sit around about 12.7v for what I assume is load testing, 14.x for charging, and the very rare 13.x.

And while I'm definitely not maxing out how loud my amp can play so I'm not hitting those wattage ceilings, I'm still using far more juice than the stock head unit.

Car has also sat for 2 weeks not started at all, battery was fine when I got back.

IMO changing the 12v early is burning money. But I'm sure I'll move to a lifepo battery once this 12v gives up.