LiFePO4 battery?

I'm not expert by any means in this topic, but if you are sporting a hybrid model, I wouldn't mess with this. The battery for the hybrids is already a tiny one, and with all the electronics, I wouldn't take any chances. It works based on OEM (all it does is start the truck), I don't see any real world reason to upgrade this.

Talked to also my buddy who is a toyota foreman tech, he said if you need to run aux, always run it on the Ready so all drain is on the hybrid battery, not the starter battery.

I've ran Lithium on my older cars before, but with the finicky of voltage/amps and these hybrid systems, i'm leaving this truck alone.