alternaot ... battery ? not sure

[Levesque]

Guys something weird happens to my car and Im really not sure what it is.

I start the car I pull the battery terminal car runs no problem.

Battery is a new Kirkland one...Might have drained it before ( as testing stuff and trying to start it a bunch of times when fuel pump was unpluged.) .. its like 2 weeks old.

Problem is this sometimes while driving my radio turn on and off... my wipers are slow and lights are dim.

Car never stalled at all so far...So im thinking its the battery thats taking charge sometimes and sometimes not ?

Because when the radio turns off , slow wipers and dim lights car keeps running.

It did exactly that 10mins ago at the restaurant while parked then I floored it for a bit on the way home and everything was fine.... Suggestions?

Battery is not tied down... I know its dumb and will fix that now .

Just stated that in case that might cause this problem.

 

[Dhan]

For starters: a loose battery is a recipe for disaster. If it touches ground there's a good chance a fire will start and you'd know if that was the problem.

Find another battery and try it or exchange the one you bought if you think the batteries bad. Not likely, but you never know.
Do you have enormous subs or any other large electronics going?

Are the contacts clean? If not grab some steel wool or a wire brush and make the contacts shine.