NOT A GOOD STRRET CAR BATTERY, Ya they are light but don't do this.
I use them in race cars and occasionally a race car that's driven on the street. Meaning there's NO HVAC, radio, wipers or power anything, nothing but the engine and everything related. Those type of cars don't have much requirement for amperage like the cars we drive every day. I have used the Braille batterys since they came out, but for race cars. We go through one every year, sometimes I get two years out of them but not often. Our race cars have 140 amp alternators and we constantly keep chargers on them between rounds or sessions (depending on what racing we are doing.) And always on chargers when the cars are in the shop sitting or being worked on. They never go bad because of the way they are cared for under my watch, but they simply DO NOT last long. With all the electronics on these new cars there's NO WAY in hell I would use a battery like this. They are excellent for their intended purpose being race cars and I will keep using them on race cars. I never use them on street car builds. I use the biggest dam battery I can, get usually the optima's.
Yes the giant battery in our cars is fricking heavy. Like really heavy. But that weight is in the trunk on the right side, right where we need that weight. Many of us, myself included have found starting line gains at the drag strip by adding weight in the trunk. Man did I hate doing that, but it works. I run the car real low on fuel (Tank is in the middle of the car therefore it weighs down the entire car) and I add 80lbs all the way back by the bumper. picked up over 2 tenths doing that in my redeye.
If your looking for weight savings look elsewhere as a battery like this is a really bad idea for these types of cars.