12-volt battery replacement - GreenHybrid - Hybrid Cars


Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-20-2011, 12:54 PM
Enthusiast
Thread Starter
 
Join Date: Sep 2005
Location: Austin TX USA
Posts: 9
Default 12-volt battery replacement

There was no way that I was going to spend $170 for a 12-volt battery for my 2004 Prius, so I went to the local battery store and bought a 5-year Size 51 battery for $59.95. Don't get a 51R; the R means terminals reversed. I went to the local Wal-Mart and bought a pair of marine terminals for it that have threaded posts and a butterfly nut on each one. That set me back another $2.94. Removal and installation took about 45 minutes, requiring only a 10 and 12 mm socket and a 5/16" drill.
1. Remove the rear trunk cover and tray as if you were going to take out the spare tire.
2. Remove the black air duct that goes over the battery. Two 10mm bolts, the one in the fender is self-threading.
3. Remove the negative ground cable from the battery and the back frame (10mm)
4. Remove the 12mm bolt and 10mm bolt that hold the black box down so you can push it aside a little.
5. Remove the 10mm nut and 10mm bolt that hold the battery clamp-down bracket.
6. Remove the positive battery clamp.
7. Lift out the battery.
8. Attach the marine terminals to the new battery, with the butterfly nuts removed.1/2-inch socket.
9. Remove the ground cable clamp nut and bolt and spread the clamp apart. Enlarge the clamp hole to 5/16"
10. Put the new battery in place of the old one, with the terminals in the same relative position.
11. Replace the battery clamp-down bracket.
12. Replace the air duct
13. Put the positive cable assembly over the positive terminal post and tighten the butterfly nut on it.
14. Put the negative ground cable 5/16" hole over the negative terminal post and tighten the frame bolt, then the butterfly nut.
15. Put the black box back and tighten it down.
16. Check all fasteners for tightness.
16. Replace tool tray and trunk floor.
For a more elaborate fix (not completed yet) saw the tops of the two terminals off the old battery off the tops until you can see the steel posts inside the lead. Saw off the terminals from the old battery. Push the steel posts out of the terminals. Run a 5/16-18 tap thru the holes (if that is what the marine terminals have). Be aware that the two terminals have different diameters. Thread the posts onto the marine terminals. Do not do Step 9, Modify Step 13 and 14 to just replacing the factory battery cable clamps over the old posts, which are now secure on the marine terminals.
Reply With Quote
  #2  
Old 06-05-2014, 11:30 PM
Enthusiast
 
Join Date: Jun 2014
Location: Downey Ca.
Posts: 1
Default Re: 12-volt battery replacement

Chris:
Thank you so much for posting that information I will follow your
instruction in obtaining and replacing my 12 Volts Aux.Batt.
My experience in finding a battery has been pretty much what you've
posted in your blog.
Best price I've got was $193.00 including taxes.
Thanks Silvester.
Reply With Quote
 
 
Reply

Related Topics
Thread Topic Starter Forum Replies Last Post
12 Volt Battery Replacement / Upgrade on a 2007 Toyota Camry Hybrid with photos Captain Jim Toyota Camry Hybrid 229 06-09-2017 08:24 PM
2007 HCH 12 Volt Battery replacement urgent help needed! Yojimbo! HCH II-Specific Discussions 13 02-25-2017 02:30 PM
anyone need a replacement 12 volt battery yet? cwerdna Nissan Altima Hybrid/Infiniti M35h/ Q50 hybrid 7 04-23-2013 05:59 PM
Silverado 12 Volt battery replacement ! Time Hybrid GM Hybrid Trucks, Cadillac Escalade Hybrid, Chevrolet Tahoe Hybrid & GMC Yukon Hybrid 0 08-28-2011 01:00 PM
12 volt battery replacement need help!! Rcommander Toyota Camry Hybrid 6 08-08-2009 10:37 PM


Tags
12, 12v, 2004, 2006, battery, escape, grounding, honda, hybrid, insight, installation, prius, replacement, toyota, volt, walmart

Thread Tools Search this Thread
Search this Thread:

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



All times are GMT -7. The time now is 02:34 AM.