NEVER BUY WALMART'S BATTERIES OR YOU WILL BE SORRY

[: P]

"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.
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

[D.]

if you know so much about batteries then
why didn't you check your own ????
you're a fruitcake

[toronado]

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.

Wasn't the engine running while you were testing the battery? It has
to be a defective voltage regulator that is causing this problem. A
defective voltage regulator can cause the voltage to vary as you
describe.

A battery can't do what you describe on it's own with the engine not
running. About 13.2 volts is the most you can get out of a car battery
unless the engine is running.

[R J Talley]

The guy's either dolt or a troll. A car battery will not read over 13.5
volts, it's not possible really given the number of cells. It had to be the
voltage regulator in the car itself.

Second, all WalMarts will prorate a battery for return. Once that battery
was wetted and charged, (which it had to be to be tested) it cannot be
returned for a full refund unless defective. Clearly, it was not. The man
is a weenie. Oh, and a marginally literate one at that.

[Larry Rogers]

"Yes, I tested the Wal-mart batteries while the engine was running on the
road."

How did you test the battery on the road? Were you running along beside the
car with the voltmeter clipped on? And how did you test the current flow?
How many amps did it put out? Do you know the difference between volts and
amps?

"Plus 75% of their batteries will cause your car to have faulty Fuel
Reading" .... " their EverStart batteries (black color) had jumpy Current
flow"

There are three primary makers of batteries in the US. All of them make
Everstart batteries for WalMart. You are saying that nobody makes good
batteries.

You don't know what you're talking about. And as someone else pointed out,
there are no, repeat NO, returns on used electrical components. You made a
mistake. It cost you the price of a battery. If you want your money back,
put a classified ad in the local paper and sell it.

Larry
In the back yard, under the oak.

[willshak]

Post by Larry Rogers
"Yes, I tested the Wal-mart batteries while the engine was running on the
road."
How did you test the battery on the road? Were you running along beside the
car with the voltmeter clipped on? And how did you test the current flow?
How many amps did it put out? Do you know the difference between volts and
amps?
"Plus 75% of their batteries will cause your car to have faulty Fuel
Reading" .... " their EverStart batteries (black color) had jumpy Current
flow"
There are three primary makers of batteries in the US. All of them make
Everstart batteries for WalMart. You are saying that nobody makes good
batteries.
You don't know what you're talking about. And as someone else pointed out,
there are no, repeat NO, returns on used electrical components. You made a
mistake. It cost you the price of a battery. If you want your money back,
put a classified ad in the local paper and sell it.
Larry
In the back yard, under the oak.

I'm coming to see you. A 12 pack enough????

[Larry]

Bill says....
"I'm coming to see you. A 12 pack enough????"

For me, yes. But what are you going to drink?

Larry
In the back yard, under the oak.

[MickeyMouse]

Post by Larry Rogers
"Yes, I tested the Wal-mart batteries while the engine was running on the
road."
How did you test the battery on the road? Were you running along beside the
car with the voltmeter clipped on? And how did you test the current flow?
How many amps did it put out? Do you know the difference between volts and
amps?
"Plus 75% of their batteries will cause your car to have faulty Fuel
Reading" .... " their EverStart batteries (black color) had jumpy Current
flow"
There are three primary makers of batteries in the US. All of them make
Everstart batteries for WalMart. You are saying that nobody makes good
batteries.
You don't know what you're talking about. And as someone else pointed out,
there are no, repeat NO, returns on used electrical components. You made a
mistake. It cost you the price of a battery. If you want your money back,
put a classified ad in the local paper and sell it.
Larry
In the back yard, under the oak.

Yeah yeah... I don't know what I'm talking about but I beat many
scientists/engineers out there. Two years ago, I was the one who doubled my
Mercedes E320 45-MPG, and my Infiniti's 50-MPG. I am laughing at you men of
arrogant. Don't you know I got speedy tickets because I abused the free
energy I got, Yup! free energy for me, big bills for you arrogant....
Thanks to God for his generosity, I will let you suffer from your oil
thirsty.

BTW - I changed my name to Mickey Mouse so you can laugh at me further, ok?

[Larry]

If you are so smart, why didn't you check the charging system before you
bought a battery? And now you bitch about not being able to return the
battery? And you want me to think you are smart?

Just how did you double the mileage of your cars? The same way you checked
your battery? I would like to see your math on how you figured the gas
mileage.

Larry
In the back yard, under the oak.

[h***@h-gee.co.uk]

Post by Larry
If you are so smart, why didn't you check the charging system before you
bought a battery? And now you bitch about not being able to return the
battery? And you want me to think you are smart?
Just how did you double the mileage of your cars? The same way you checked
your battery? I would like to see your math on how you figured the gas
mileage.
Larry
In the back yard, under the oak.

That was the easy bit - change the odometer reading to Km instead of Miles.
--
Sir Hugh of Bognor

The difference between men and boys is the price of their toys.

Intelligence is not knowing the answer but knowing where and how to find it!

Hugh Gundersen
***@h-gee.co.uk
Bognor Regis, W.Sussex, England, UK

[willshak]

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.

clipped

I love it when someone has a problem with anything, and then tries to
convince everyone not to buy it, or from whom.
Never buy anything from anyone, because at one time or another, some
person had a bad experience.
That leaves pretty much everything. :-)

[satmech]

Post by willshak

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.

clipped
I love it when someone has a problem with anything, and then tries to
convince everyone not to buy it, or from whom. Never buy anything from
anyone, because at one time or another, some person had a bad
experience.
That leaves pretty much everything. :-)

Hah! There's a handle on those things for a reason!

I can buy one good one for less cost/hassle/total cost for that!

(and wife won't have to call me for something dumb like that)

Hey, It's YOUR family who's depending on the car to start! Go be a hero
and jump 'em off.

[satmech]

Post by : P
"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.
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

ha!

There's a reason that some batteries have a handle built in!

I don't know about 'jumpy', but my wife's car (RX300) went into the body
shop after she let her sister drive it. The new Interstate battery must
have been discharged, because they stuck a 'W' battery in it.

I did not notice until later.

Less than a year after, I ended up buying another Interstate (no
commission (sic) here) battery.

No problems now!

(It's no fun flying back from out-of-town to find the battery is dead in
rental parking with no electrical accessories left on. It tested bad on
a Midtronics tester!)

Gah!

[Dave Plowman (News)]

Post by satmech
(It's no fun flying back from out-of-town to find the battery is dead in
rental parking with no electrical accessories left on. It tested bad on
a Midtronics tester!)

No battery will cope with the car being left for a long time without the
engine started. IIRC BMW only warrant this for a couple of weeks.

[d***@gmail.com]

Well, perhaps that explains what happened to me. I purchased a
WalMart battery, it was sitting on the shelf apparently fully
charged. This Walmart did not have a service garage, so I installed
it myself. The next day, my car engine started miss firing, stalling
and was hard to start. It had to be towed. The mechanic found that
the fuel was not making it to the engine. He changed the fuel pump
and it ran ok for a day or so. Then the electrical devices started
acting intermittent and the engine missing started again. Long story
shortened, I replaced the battery with another brand and had no more
problems with the fuel or with the electronics (over a year now). If
I hadn't read this posting, I would have never suspected the fuel pump
wasn't bad as well as the bad luck to have had a bad battery.

Dave

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.
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

[Blake Dodson]

I have used their batteries for years with no problems. In FACT, there
are only a few batery manufactuers and they just slap a marketing
label on the things.

- Never ever assume that a shelved battery is fully charged. All
batteries should have charge levels checked before installation.

- Never check a battery with a volt meter. Batteries need a load put
on them to measure ampheres. Nearly dead batteries could still muster
12V.

I have returned batteries to Walmart, if the posts look like they have
been clamped, it is now a used battery. This guy said that he tried it
on the car, then said he never used it. Which is it?

Walmart batteries are fine. Guessing shade tree mechanics are not.

[willshak]

Post by Blake Dodson
I have used their batteries for years with no problems. In FACT, there
are only a few batery manufactuers and they just slap a marketing
label on the things.
- Never ever assume that a shelved battery is fully charged. All
batteries should have charge levels checked before installation.
- Never check a battery with a volt meter. Batteries need a load put
on them to measure ampheres. Nearly dead batteries could still muster
12V.
I have returned batteries to Walmart, if the posts look like they have
been clamped, it is now a used battery. This guy said that he tried it
on the car, then said he never used it. Which is it?
Walmart batteries are fine. Guessing shade tree mechanics are not.

I bought a Sears Die Hard a few years ago. Got it home and installed it
on another car. No good. Returned it, and they said it was dry!
Got another. OK with that one.

[R J Talley]

Batteries are pretty simple devises. Where people get into trouble is when
the either buy a battery too small for the operation or they buy one that is
already old. The first issue is easily prevented by reading the owner's
manual carefully and then purchasing a battery that fits the manufacturer's
specs. That's pretty plain and simple. If possible, I usually try and exceed
the rec specs by as wide a margin as possible. Frequent trips to Montana in
the winter as well as the brutal summers here in the high desert country of
SoCal really test a battery's "cajones". Going light is no bargain.

The second issue is a little harder. Consumer Reports publishes a list of
battery maker's codes. With this list in hand, one can sort through the
batteries being offered and get one that is less than a year old. This is
the place to start. Some outfits will sell batteries that are two and three
years old off the shelf. Of course, that translates into far less service
life to the consumer.

At present I have a three year old 72 month Wal-Mart battery that I use only
occasionally in my RV. It sits 9 to 10 months of the year unused and off
line. Each year I hit it with a charger the night before I need it and so
far, it comes to life and holds a charge. To date, I've never had a 5 year
battery last less than 4 years or more than 5, usually they go about 4 years
and crap out. Life-time batteries have proven to be 4 year batteries and no
more. Even the venerated Die-Hard goes 4 years and no more.

I get my batteries at either Pep Boys or Wal-Mart. Each has a pretty good
deal. I have used Sears in the past but fail to see any real benefit in
doing so now. Their batteries and prices are no better and often worse than
either of the afore mentioned retailers.

One thing I will not do is use the dealer. Damn, that is just plain foolish.
They have a huge mark-up on the battery, and charge a usurious installation
fee. Worse, truth be told, their batteries are bottom line spec only. So you
end up paying out a huge sum and getting only mediocre value for the money.

[E Meyer]

Post by R J Talley
Batteries are pretty simple devises. Where people get into trouble is when
the either buy a battery too small for the operation or they buy one that is
already old. The first issue is easily prevented by reading the owner's
manual carefully and then purchasing a battery that fits the manufacturer's
specs. That's pretty plain and simple. If possible, I usually try and exceed
the rec specs by as wide a margin as possible. Frequent trips to Montana in
the winter as well as the brutal summers here in the high desert country of
SoCal really test a battery's "cajones". Going light is no bargain.
The second issue is a little harder. Consumer Reports publishes a list of
battery maker's codes. With this list in hand, one can sort through the
batteries being offered and get one that is less than a year old. This is
the place to start. Some outfits will sell batteries that are two and three
years old off the shelf. Of course, that translates into far less service
life to the consumer.
At present I have a three year old 72 month Wal-Mart battery that I use only
occasionally in my RV. It sits 9 to 10 months of the year unused and off
line. Each year I hit it with a charger the night before I need it and so
far, it comes to life and holds a charge. To date, I've never had a 5 year
battery last less than 4 years or more than 5, usually they go about 4 years
and crap out. Life-time batteries have proven to be 4 year batteries and no
more. Even the venerated Die-Hard goes 4 years and no more.
I get my batteries at either Pep Boys or Wal-Mart. Each has a pretty good
deal. I have used Sears in the past but fail to see any real benefit in
doing so now. Their batteries and prices are no better and often worse than
either of the afore mentioned retailers.
One thing I will not do is use the dealer. Damn, that is just plain foolish.
They have a huge mark-up on the battery, and charge a usurious installation
fee. Worse, truth be told, their batteries are bottom line spec only. So you
end up paying out a huge sum and getting only mediocre value for the money.

You might want to rethink the dealer option. The last two times I needed
batteries, the dealers (Acura & Nissan) were both ten dollars cheaper than
Die Hard (at NTB) and had a longer (3 years vs. two) free exchange period.

[R J Talley]

If'n ya noticed .... I said that Sears was frequently beat by both Pep Boys
and Wal-Mart that's why I never go to them any more. The cheapest any dealer
ever quoted me for a battery was $89.00 plus $25.00 installation and a $15
hazmat dump fee. At Pep Boys, a 5 year battery installed and paid for never
runs over $80 period. Shop the sales and you can beat that by $15-20. So,
the dealer is out as far as I'm concerned.

[E Meyer]

Post by R J Talley
If'n ya noticed .... I said that Sears was frequently beat by both Pep Boys
and Wal-Mart that's why I never go to them any more. The cheapest any dealer
ever quoted me for a battery was $89.00 plus $25.00 installation and a $15
hazmat dump fee. At Pep Boys, a 5 year battery installed and paid for never
runs over $80 period. Shop the sales and you can beat that by $15-20. So,
the dealer is out as far as I'm concerned.

Obviously your mind is closed on the subject, but just for reference, my
last battery on the Acura TL was $69.95 plus sales tax, no additional fees,
free installation & 3 year free replacement warranty (the pro-rated period
is 6 years) from the Acura dealer. They also threw in a free car wash while
they had it. Definitely met your under $80 criteria.

Don't close the door to the dealer for everybody just because the one in
your area is a greedy sleaze.

[Rich]

Post by E Meyer

Post by R J Talley
If'n ya noticed .... I said that Sears was frequently beat by both Pep Boys
and Wal-Mart that's why I never go to them any more. The cheapest any dealer
ever quoted me for a battery was $89.00 plus $25.00 installation and a $15
hazmat dump fee. At Pep Boys, a 5 year battery installed and paid for never
runs over $80 period. Shop the sales and you can beat that by $15-20. So,
the dealer is out as far as I'm concerned.

Obviously your mind is closed on the subject, but just for reference, my
last battery on the Acura TL was $69.95 plus sales tax, no additional fees,
free installation & 3 year free replacement warranty (the pro-rated period
is 6 years) from the Acura dealer. They also threw in a free car wash while
they had it. Definitely met your under $80 criteria.
Don't close the door to the dealer for everybody just because the one in
your area is a greedy sleaze.

Costco batteries are great, and IIRC have a 5 year warranty to boot.
I imagine any of the warehouse clubs have a similar deal. The battery
in my Maxima is going on 5 years old, and I'm debating replacing it
before winter even though it still tests fine.

[Copper Emeritus]

Post by Rich

Post by E Meyer

Post by R J Talley
If'n ya noticed .... I said that Sears was frequently beat by both Pep Boys
and Wal-Mart that's why I never go to them any more. The cheapest any dealer
ever quoted me for a battery was $89.00 plus $25.00 installation and a $15
hazmat dump fee. At Pep Boys, a 5 year battery installed and paid for never
runs over $80 period. Shop the sales and you can beat that by $15-20. So,
the dealer is out as far as I'm concerned.

Obviously your mind is closed on the subject, but just for reference, my
last battery on the Acura TL was $69.95 plus sales tax, no additional fees,
free installation & 3 year free replacement warranty (the pro-rated period
is 6 years) from the Acura dealer. They also threw in a free car wash while
they had it. Definitely met your under $80 criteria.
Don't close the door to the dealer for everybody just because the one in
your area is a greedy sleaze.

Costco batteries are great, and IIRC have a 5 year warranty to boot.
I imagine any of the warehouse clubs have a similar deal. The battery
in my Maxima is going on 5 years old, and I'm debating replacing it
before winter even though it still tests fine.

If you got five years out of it you are way ahead of the game. The only
question now is do you want to replace it on a nice sunny afternoon during
half time watching your team on TV, or wait for the first snow or ice storm?

[Dean Dark]

On Mon, 22 Oct 2007 13:23:09 -0500, "Copper Emeritus"
<***@kc.rr.com> wrote:

<battery pros and cons>

Post by Copper Emeritus
If you got five years out of it you are way ahead of the game. The only
question now is do you want to replace it on a nice sunny afternoon during
half time watching your team on TV, or wait for the first snow or ice storm?

For several years, I bought 5 year warranted Pep Boys batteries for a
number of different cars. Several of them failed and whenever I took
one back they would cheerfully replace it with a new one.

Then I realised that all the hassle simply isn't worth it. Pay the
extra for a battery that's less likely to crap on you at an
inconvenient time. In my hog f*cking opinion, Pep Boys batteries are
garbage, regardless of the warranty.

[Fred W]

Post by Dean Dark
On Mon, 22 Oct 2007 13:23:09 -0500, "Copper Emeritus"
<battery pros and cons>

Post by Copper Emeritus
If you got five years out of it you are way ahead of the game. The only
question now is do you want to replace it on a nice sunny afternoon during
half time watching your team on TV, or wait for the first snow or ice storm?

For several years, I bought 5 year warranted Pep Boys batteries for a
number of different cars. Several of them failed and whenever I took
one back they would cheerfully replace it with a new one.
Then I realised that all the hassle simply isn't worth it. Pay the
extra for a battery that's less likely to crap on you at an
inconvenient time. In my hog f*cking opinion, Pep Boys batteries are
garbage, regardless of the warranty.

Fabulous. That and $1.95 will get you a cup of coffee.

[Bill Rider]

Plus 75% of their batteries will cause your car to have faulty Fuel Reading.

How did you arrive at that figure? A fuel gage is on an instrument
regulator, isn't it? That's because alternator voltage varies,
depending on the load and the temperature, for examples.

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.

A spare battery can be useful. If you keep it charged in a cool place it
should last many years.

Their EverStart batteries (black color) had jumpy Current flow, its Current+Voltage will jump from 12.80v to 13.76v, also to 15.45volts,

Alternators can jump like that. 15.45 sounds a little high in warm
weather. Off the shelf, a battery may have to sit on a charger a day or
two before it will work right. The problem could also be corrosion in a
connection or a faulty alternator/regulator.

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.

You said you hadn't opened the seal on the battery. You could turn on
your headlights with the engine off. If the battery is fully charged,
the voltage should be about 12.6. If the lights don't flicker, the
current flow is constant. If they flicker, the problem may be in the
electrical system.

A jumpy battery will cause the fuel pressure to fluctuate because the fuel pump depends on a constant flow of current.

Do you know your fuel pressure fluctuates? I imagine it should be
constant despite the voltage variations you described.