Im looking to get a new battery it seems my sub and amp pull a lot of power. Was thinking of Braille Lithium 12 V 434 Cranking Amps Micro-Lite Carbon Battery, any thoughts or any other braille thats are msant for lexus? Or any other good lite weight high power batteries out there?

 

Your car is 3,600 lbs on its best day. saving 20 lbs (if you're lucky) and spending an extra $200 isn't really good value.

And even if you did have an extra beefed up battery, i don't think the alternators on these cars are that stout anyway. you should probably scale back on the power.

if you're not running full sustained power on your system, then a capacitor would help more than a battery would.