• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Optima Red Battery Issue..Anyone Else?

  • Thread starter Thread starter 94GTLaserRC
  • Start date Start date Aug 27, 2008

94GTLaserRC

Squint as you approach, lest you be blinded by my
15 Year Member
May 7, 2002
11,178
13
89
Ernan Says "here it comes... dushbag"
Aug 27, 2008
#1
  • Aug 27, 2008
  • #1
I replace a 3-yo Optima Red battery about 6 months ago. The battery wouldnt hold the charge. Now I know that I havent driven the car much with the problems before the rebuild, but it would not start the car if it sat around for only 1 week.


Since I got the replacement, I had it out of the car for 12 weeks doing the engine swap. It had to be recharged to start the car when it was time. I have driven the car about 30 miles over the last 2 weeks just driving around to make sure everything is ok.

The other day, I had the radio on in the car for about 2 hours while I was working in the garage (no extra power stuff on the system). All of a sudden, the radio cut out.. the battery was completely dead.

Now, I KNOW that "things" put a drain on the battery, but I have in the past left lights on inside, had alarms on the car, and run the radio while the car was off, and I NEVER had this problem.

Is this a FLAW with the red-top batteries, a chance coincidence that it is 2-batteries in a row, or maybe something wrong with my system.??

Before saying "ALTERNATOR" I will tell you that running the car DOES bring the V up to 14, and the indicator needle does show chargine while the car is running.


Any input would be appreciated!
Thanks
RC
 

95strokerPSU

Member
Jul 29, 2004
986
1
19
Sacramento from Philly
Aug 27, 2008
#2
  • Aug 27, 2008
  • #2
I put my red top through hell and it's held up fine. Especially when my alt. wasn't grounding and I was continually running the battery out. Going on five years and maybe 8000 miles
 

blksn955.o

Founding Member
Mar 15, 2002
3,263
0
66
st.louis mo 314
Aug 27, 2008
#3
  • Aug 27, 2008
  • #3
I have heard of an issue with them when they sit for a period of time. Most people put a trickle charger on them if they are not going to be used. Another thing is were you put the batt. when not in use. If its just hooked up and in the car it will drain out over a few months. Also if you put it on the ground...like in the garage on the floor they (any batt. for that matter) will discharge fairly fast.

I have heard the newer red tops are having issues. Either a bad batch or process. I would call optima and see what they say unless you can just exchange it for a new one...but I would maybe call in case the store you got yours has a big batch of those prone to failure. Calling Optima may get you one that is better.
 

94GTLaserRC

Squint as you approach, lest you be blinded by my
15 Year Member
May 7, 2002
11,178
13
89
Ernan Says "here it comes... dushbag"
Aug 28, 2008
#4
  • Aug 28, 2008
  • #4
THis current one I have is still under free replacement warranty for a few months since it is less than a year old.

No matter what, I fully charged Optima should hold the radio running in the car for several hours, not just 2 hours, then dying out.

RC
 

Methodical

15 Year Member
Dec 1, 2003
1,192
11
59
Clinton, MD
Aug 28, 2008
#5
  • Aug 28, 2008
  • #5
Give them a call and let us know.

My yellow top weakened after 5 months of non-driving but after charging and a little more driving its been ok.

I have one on the Expy and it died but it was the alternators fault. Luckily both were still under warranty.
 

ProKiller

Founding Member
Apr 26, 2002
3,064
15
78
PA
Aug 28, 2008
#6
  • Aug 28, 2008
  • #6
what voltage does the battery read when its not connected to anything?
 

Pops Fun

10 Year Member
Feb 15, 2003
961
14
59
Cincinnati, Ohio
Aug 28, 2008
#7
  • Aug 28, 2008
  • #7
I got rid of my redtop, because if the car sat for a week or 2 it wouldn't start. fought with it for a year then got a motor craft and life is good again!!
Shame it looked good in my red car
 

94GTLaserRC

Squint as you approach, lest you be blinded by my
15 Year Member
May 7, 2002
11,178
13
89
Ernan Says "here it comes... dushbag"
Aug 28, 2008
#8
  • Aug 28, 2008
  • #8
Pops Fun said:
I got rid of my redtop, because if the car sat for a week or 2 it wouldn't start. fought with it for a year then got a motor craft and life is good again!!
Shame it looked good in my red car
Click to expand...

Well now that my battery is in the trunk in a box, doesnt matter what it looks like. THing is I just bought it, so My only option if I dont want to shell out more money is to try to return it and see if that makes a difference now that the swap is done.
RC
 
B

BREWTUS428CJ

New Member
May 19, 2008
66
0
0
Lake Elsinore, CA
Aug 28, 2008
#9
  • Aug 28, 2008
  • #9
my place carries those, we havent had any issues. 8004-003 is our most popular part number, we sell 8-10 a month. If the place you purchased from doesnt move them or if they dont rotate the stock, then you might have gotton an old one. You should always check the date code of a battery before you buy, the date code works like this(on Optima): 1st digit is the year (8=2008) the next 3 digits are the day of the year (005 is the 5th of january, 032 is feb 1st and so on) this is the date of shipping, not the date of manufacture.
All of the batteries I have here are coded 8205, which is in July I think 205th day of 2008, (this is where it gets complicated with my elementary math skills) and I have one 8175 (June?) and the 8175 is sitting on the front of the shelf so that it sells first, If I kept throwing new batteries out in front of the 8175 for say a year and 3 months, it would still be sitting there in September 2009 and some lucky bastard might buy it, the he'll get all the way home before he discovers he also got a free bag of issues with his purchase.
 

Methodical

15 Year Member
Dec 1, 2003
1,192
11
59
Clinton, MD
Aug 29, 2008
#10
  • Aug 29, 2008
  • #10
BREWTUS428CJ said:
my place carries those, we havent had any issues. 8004-003 is our most popular part number, we sell 8-10 a month. If the place you purchased from doesnt move them or if they dont rotate the stock, then you might have gotton an old one. You should always check the date code of a battery before you buy, the date code works like this(on Optima): 1st digit is the year (8=2008) the next 3 digits are the day of the year (005 is the 5th of january, 032 is feb 1st and so on) this is the date of shipping, not the date of manufacture.
All of the batteries I have here are coded 8205, which is in July I think 205th day of 2008, (this is where it gets complicated with my elementary math skills) and I have one 8175 (June?) and the 8175 is sitting on the front of the shelf so that it sells first, If I kept throwing new batteries out in front of the 8175 for say a year and 3 months, it would still be sitting there in September 2009 and some lucky bastard might buy it, the he'll get all the way home before he discovers he also got a free bag of issues with his purchase.
Click to expand...

Good info. This is going in the vault.

When I got my Yellow Top from Sears it died within a month. Probably an old one too.
 
You must log in or register to reply here.

Similar threads

C
Electrical HELP! 1989 5.0 Stick, Voltage Bleed onto Ignition Trigger wire
  • ChickenDeluxe
  • May 14, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
139
Fox 5.0 Mustang Tech May 24, 2026
ChickenDeluxe
C
A
Resolved Electrical Help Please
  • Alabama
  • Jan 22, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
2
Views
248
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 22, 2026
AeroCoupe
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
288
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
T
Help with a 95 5L crank no start
  • TheBubbaJoe
  • Nov 4, 2025
  • 1994 - 1995 Specific Tech
Replies
3
Views
399
1994 - 1995 Specific Tech Nov 5, 2025
AeroCoupe
P
2002 T5 transmission vibration issue
  • puffoo
  • Feb 22, 2026
  • SN95 V6 Mustang Tech
Replies
0
Views
142
SN95 V6 Mustang Tech Feb 22, 2026
puffoo
P
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?