"A jumpy battery will cause the fuel pressure to fluctuate because the fuel pump depends on a constant flow of current."
You do realize that the main function of the battery is to start the vehicle, after that, the alternator takes over to power all electrical items and recharge the battery. So I don't see what you're saying, unless the voltage regulator is starting to go.
I've been using batteries purchased from Wally world for the last 5 years and haven't had a problem. When 1 crapped out, I took it in for the pro-rated warranty and got a replacement. I do my own voltage checks & repairs, so I just get the battery there for the convince. I used to go to Sears but they're 4 times the distance away and there's always a lengthy wait, either in the sales line or the pick-up line in the shop.
"I later discovered that my other battery in my car is fine", maybe you should have checked the charging system 1st, before deciding to purchase the battery. Who would you be complaining about if you had decided to purchase a replacement alternator 1st, then found out your battery or starter was the problem. Most auto-parts stores I go to have a no return policy for electrical items unless they made the error. Then you'd be stuck with an alternator you didn't need. That's why I always pull the defective part and take it in for a side by side comparison to make sure I get what I need. The main point here is to check things 1st, before committing to the purchase.
> Regardless if you used their batteries or not, they won't let you return
> no matter what!! Plus 75% of their batteries will cause your car to have
> faulty Fuel Reading.
>
>
> Full Story:
>
> There was no clear written "No Return" policy in front of the battery
> section, one of their managers tried to point out to me that there is a
> No-Return policy, I was surprised, later you read it, I did not see any
> where did it say "No return". They just made up their policy as they go
> these people.
>
> I bought one of their batteries a few days ago, I had never opened its
> seal nor used it. I later discovered that my other battery in my car is
> fine, something was wrong with my car's charging system. Any way, I
> thought I wouldn't be needing this new battery, now I am stuck with their > battery.
>
> One more thing to keep in mind, their EverStart batteries (black color)
> had jumpy Current flow, its Current+Voltage will jump from 12.80v to
> 13.76v, also to 15.45volts, Wal-mart batteries will cause your Fuel Gauge
> to move up and down like crazy. Why?75% of their batteries won't give
> you a constant current flow. How do I know this? I put a current & volt
> meter on their battery and that's how I know.
>
> A jumpy battery will cause the fuel pressure to fluctuate because the fuel
> pump depends on a constant flow of current. Do not buy Wal-mart's
> EverStart battery (black color).
>
> Their technicians will lie to you to get you to buy their low quality
> batteries, then they will surprisingly tell you "no return" policy. It
> took me two mistakes to finally decide to analyze their batteries. This
> costs me more troubles than good. Be ware.
>
> Tom