IF CHUCK SAYS SO...
There's nobody better when it comes to check the hardness and resistance of things than Chuck Liddell, a MMA fighter. If he recommends you a car battery, rest assured he tested it and knows what's he talking about... And not only batteries, also brakes or any motor accesory.
And here Chuck "The iceman" Liddell fighting.
Brushing Jennifer Lawrence's ass between scenes...
OMFG! There are some jobs you should pay instead of being paid!