How Long to Trickle Charge a Dead Battery? - CorvetteForum - Chevrolet Corvette Forum Discussion

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C5 General
General C5 Corvette Discussion not covered in Tech Sponsored by
Bud's Chevy

How Long to Trickle Charge a Dead Battery?

Reply
 
 
 
Thread Tools Search this Thread
Old 08-09-2011, 07:09 AM   #1
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default How Long to Trickle Charge a Dead Battery?

My car has been down due to some mods I've been working on. Combined with some business trips, I haven't had a chance to drive it for about 4 weeks. Last weekend, when I went to open the car via the key fob....nothing. Completely dead.

I hooked up my trickle charger and it's been two days and it still indicates that the battery is charging. Does it normally take this long? The battery is a 1-year old AC Delcom OEM replacement. BTW, it's August in Florida, so lesson learned.

July/August in Florida is my "winter". Too damn hot to drive a vert.
MSG C5 is offline   Reply With Quote
Old 08-09-2011, 07:17 AM   #2
runner140*
CF Senior Member
Support Corvetteforum!
 
runner140*'s Avatar
 
Member Since: Mar 2004
Location: Ft. Lauderdale Fl
Posts: 7,178
Thanked 37 Times in 37 Posts
Default

Could indicate a dead cell....from being totally discharged. Try to charge another day or so and if that doesn't work, have it load tested to check for a dead cell. You may need to go shopping for a new battery.
runner140* is offline   Reply With Quote
Old 08-09-2011, 08:34 AM   #3
TOPCATHR
CF Senior Member
 
Member Since: Oct 2010
Location: NORTHPORT NY
Posts: 367
Thanks: 0
Thanked 1 Time in 1 Post
Default

Usually at 1 amp approx 10 hours
TOPCATHR is offline   Reply With Quote
Old 08-09-2011, 10:48 AM   #4
Wallly
CF Senior Member
 
Wallly's Avatar
 
Member Since: Jul 2009
Location: Upstate NY
Posts: 140
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Are the setting right on your trickle charger? I know some let you change the amount of amps and the voltage of the battery. I left my lights on last week and hooked up the trickle charger and left it on for 2 days just to be sure that it got a deep charge. Does your car start up now?
Wallly is offline   Reply With Quote
Old 08-09-2011, 01:16 PM   #5
Vetteman Jack
Moderator
Support Corvetteforum!
MO Events Coordinator
CI 5, 8 & 11 Veteran
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
NCM Sinkhole Donor
 
Vetteman Jack's Avatar
 
Member Since: Mar 2001
Location: Heart of Missouri Currently Own: 2003 Milestone Edition. Previously Owned: '79, '79, '84, '89, '94, '95, '99 and '00
Posts: 228,635

Thanked 1,045 Times in 960 Posts
Default

Should not take two days to recharge. Might want to get the battery tested and see if it has gone bad.
Vetteman Jack is offline   Reply With Quote
Old 08-09-2011, 02:49 PM   #6
DeeGee
Tech Contributor
 
DeeGee's Avatar
 
Member Since: Dec 2003
Location: Horncastle Lincolnshire, England
Posts: 19,383
Thanks: 0
Thanked 7 Times in 7 Posts
Default

You dont say which type of charger you're using. The "battery tender" type of charger takes longer to recharge the battery. i just recharged my boat battery (from dead) and it took 3 days - 1 day on a normal charger and 2 days on my Accumate.
DeeGee is offline   Reply With Quote
Old 08-09-2011, 06:37 PM   #7
Rebel 1
CF Senior Member
 
Member Since: Apr 2010
Location: In front of you
Posts: 1,423
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by DeeGee View Post
You dont say which type of charger you're using. The "battery tender" type of charger takes longer to recharge the battery. i just recharged my boat battery (from dead) and it took 3 days - 1 day on a normal charger and 2 days on my Accumate.
This was about the amount of time it took to bring back my discharged battery.
I had left the interior lights on our Grand Prix for 24 hours.
Just took it slow and easy with a 1.5 amp maintainer/charger
Rebel 1 is offline   Reply With Quote
Old 08-09-2011, 07:49 PM   #8
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default

Thanks for all the feedback. I am using this 12V "Battery Tender Plus" trickle charger.



I hooked it up Sunday night and it's still not charged. The Key Fob is not unlocking the car and the hood light does not go on. Still completely down.

The charger does display the steady red light which indicates that the battery is charging. I've had the car down for over 4 weeks before and the battery never died, however it's been blazing hot the last few weeks here in Florida. I did remove the sun visors as part of the interior mod project I'm working on, however I don't think disconnecting the vanity mirror connections should have negatively effected the battery (per my other thread).

The battery is only one year old, so the warranty should cover it. Unless they have a non-use clause.
MSG C5 is offline   Reply With Quote
Old 08-09-2011, 08:09 PM   #9
Cosmic Charlie
CF Senior Member
 
Cosmic Charlie's Avatar
 
Member Since: Dec 2002
Location: near Newburypot MA
Posts: 558
Thanks: 0
Thanked 3 Times in 3 Posts
Default

I've had the same problem

My Battery Tender will NOT charge a totally dead battery still in the car & hooked up to the car , I think because the computer(s), interior lights, hood light, and other stuff takes more than the trickle and it CAN'T catch up ...

I the past I used a regular 10 amp charger for a few hours to get some juice into the battery, then switched to the tender ... over night or longer

Worked perfect

Your results may vary ...
Cosmic Charlie is offline   Reply With Quote
Old 08-09-2011, 08:16 PM   #10
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default

Quote:
Originally Posted by Cosmic Charlie View Post
I've had the same problem

My Battery Tender will NOT charge a totally dead battery still in the car & hooked up to the car , I think because the computer(s), interior lights, hood light, and other stuff takes more than the trickle and it CAN'T catch up ...

I the past I used a regular 10 amp charger for a few hours to get some juice into the battery, then switched to the tender ... over night or longer

Worked perfect

Your results may vary ...
Thanks. I don't have any other type of charger (yet). Can I jump the battery and then switch over to the trickle charger?
MSG C5 is offline   Reply With Quote
Old 08-09-2011, 08:28 PM   #11
Cosmic Charlie
CF Senior Member
 
Cosmic Charlie's Avatar
 
Member Since: Dec 2002
Location: near Newburypot MA
Posts: 558
Thanks: 0
Thanked 3 Times in 3 Posts
Default

Better yet - disconnect the battery from the car, then use jumpers, and let the jump stay on for 30 minutes or longer. That should put some life in the dead battery without effecting the vette electrics - then disconnect the jumper.

then re-connect the battery to the car

when you re-connect the battery to the car if you hear alot of clicking. the battery is still too low - maybe repeat but for a longer period ...

some may dis-agree with me, but I've done exactly that before I bought a 1/10/100 amp charger (with auto shut off).
Cosmic Charlie is offline   Reply With Quote
Old 08-09-2011, 09:18 PM   #12
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default

Quote:
Originally Posted by Cosmic Charlie View Post
Better yet - disconnect the battery from the car, then use jumpers, and let the jump stay on for 30 minutes or longer. That should put some life in the dead battery without effecting the vette electrics - then disconnect the jumper.

then re-connect the battery to the car

when you re-connect the battery to the car if you hear alot of clicking. the battery is still too low - maybe repeat but for a longer period ...

some may dis-agree with me, but I've done exactly that before I bought a 1/10/100 amp charger (with auto shut off).
Thanks. I will try that. Do you know if there is any long-term damage to the battery after it's recharged?
MSG C5 is offline   Reply With Quote
Old 08-09-2011, 09:27 PM   #13
Stan MI
CF Senior Member
 
Stan MI's Avatar
 
Member Since: Aug 2008
Posts: 746
Thanked 0 Times in 0 Posts
Default

Don't know about your area but around here you can take the battery out and take it to an O'Rielys and they will put it on a tester for free (my favorite price !! ). Should be able to tell if you have a cooked battery or a dead cell.

Also, a CTEK battery charger is supposed to be able to recharge a completely dead battery still in the vehicle.
Stan MI is offline   Reply With Quote
Old 08-09-2011, 09:38 PM   #14
Cosmic Charlie
CF Senior Member
 
Cosmic Charlie's Avatar
 
Member Since: Dec 2002
Location: near Newburypot MA
Posts: 558
Thanks: 0
Thanked 3 Times in 3 Posts
Default

Years ago I did what you did (let the battery go DEAD), like 5 times in 3 years, didn't seem to hurt the battery, but eventually the battery needed replacement, anyway.

I never had any damage to the car or battery.

A symptom of a failing battery is it won't hold a charge for more than a few days (or less), and yours didn't have that symptom ... My guess is your battery is fine. Just don't let it go dead regularly - overall that's BAD for any battery.
Cosmic Charlie is offline   Reply With Quote
Old 08-09-2011, 09:51 PM   #15
Randyman2002
CF Senior Member
 
Randyman2002's Avatar
 
Member Since: Jan 2009
Location: Crystal Lake IL
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Default

A charger can charge forever and will never charge the battery if a battery cable end is loose or dirty. Are you going directly on the battery post with the charger clamps or just on the battery terminal ends?
Randyman2002 is offline   Reply With Quote
Old 08-09-2011, 10:06 PM   #16
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default

Quote:
Originally Posted by Cosmic Charlie View Post
Years ago I did what you did (let the battery go DEAD), like 5 times in 3 years, didn't seem to hurt the battery, but eventually the battery needed replacement, anyway.

I never had any damage to the car or battery.

A symptom of a failing battery is it won't hold a charge for more than a few days (or less), and yours didn't have that symptom ... My guess is your battery is fine. Just don't let it go dead regularly - overall that's BAD for any battery.
Yep. Lessoned learned. I've had the battery run down before, however this is the first time it has been completely dead. Since the battery is only 1 year old, I'm hoping once I recharge it, everything should be OK. I will never let it go this long again, especially in the summer.
MSG C5 is offline   Reply With Quote
Old 08-09-2011, 10:18 PM   #17
RJMC5
CF Senior Member
 
RJMC5's Avatar
 
Member Since: Mar 2008
Location: Northern New Mexico
Posts: 363
Thanks: 0
Thanked 1 Time in 1 Post
Default

Once it is fully charged or if you buy a new battery, keep your tender plugged in if you think it is going to sit for more than two weeks. I keep mine plugged in pretty much all year round (not a daily driver) to make sure it doesn't discharge. There are a few ways to connect and dissconect the battery tender without the hassle of popping the hood every time (cigarette lighter, longer pigtail off battery, etc..)
RJMC5 is offline   Reply With Quote
Old 08-11-2011, 10:18 PM   #18
MSG C5
CF Senior Member
Support Corvetteforum!
Thread Starter
 
MSG C5's Avatar
 
Member Since: Jul 2008
Posts: 12,254
Thanked 116 Times in 95 Posts
Default

Thanks for all the replies! I purchased one of these bad boys and completely re-charged the battery in 3 hours! Since it's still down due to the interior being reworked, I re-hooked up my original trickle charger which is now showing the battery as fully charged.

This new unit also has a maintenance mode with the digital read out, however it takes up more space than the trickle charger. I'm glad I have it around the garage.

MSG C5 is offline   Reply With Quote
Old 08-11-2011, 10:55 PM   #19
Cosmic Charlie
CF Senior Member
 
Cosmic Charlie's Avatar
 
Member Since: Dec 2002
Location: near Newburypot MA
Posts: 558
Thanks: 0
Thanked 3 Times in 3 Posts
Default

Cosmic Charlie is offline   Reply With Quote
Old 10-15-2015, 02:11 PM   #20
Rathmullan
Rathmullan
Support Corvetteforum!
 
Rathmullan's Avatar
 
Member Since: Nov 2012
Posts: 1,049
Thanked 0 Times in 0 Posts
Default

My experience with a battery tender and a dead battery in my 2012 Vette is that the car's passive electronics simply use too much juice - with or without a hood lamp and the alarm activated - for the tender to charge the battery. I've always had to remove one of the battery cables before attaching the tender - in which case I've achieved a full battery charge within 48 hours plus or minus a few (temperature may affect the amount of time required).

If you have the luxury of time. Try this before fussing around with trying to figure out if your battery is shot.

Last edited by Rathmullan; 10-15-2015 at 02:15 PM.
Rathmullan is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • How Long to Trickle Charge a Dead Battery?
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    dead battery or parasite? c12543 C6 Tech/Performance 6 12-12-2015 08:42 PM
    Did I kill my battery? djoneser C6 Corvette General Discussion 25 06-07-2015 11:55 AM
    Trickle Charger Affect? woodranch C6 Corvette General Discussion 13 01-06-2015 04:17 PM
    How long does it take to fully charge a battery? Le Mans C6 C6 Corvette General Discussion 5 09-08-2012 02:04 PM
    2 X Battery Questions Please. exukboy C6 Tech/Performance 7 03-01-2008 05:34 PM


    Tags
    10, amp, amps, batteries, battery, charge, charger, corvettes, dead, hook, induction, long, tender, trickle, tricle

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 02:57 AM.