Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Battery Tender

Thread Tools
 
Search this Thread
 
Old May 6, 2013 | 03:41 PM
  #1  
polecat702's Avatar
polecat702
Thread Starter
Vegas, Baby!
Rennlist Member
Veteran: Navy
Veteran: Marine Corps
15 Year Member
 
Joined: May 2009
Posts: 11,555
Likes: 395
From: far away
Default Battery Tender

What's the best way to hook up a float charger? I'm spending more time away working, and all my cars have dead batteries, except my El Camino. Beat's me why it isn't dead also.
Reply
Old May 6, 2013 | 03:49 PM
  #2  
WallyP's Avatar
WallyP

Rennlist Member
Rennlist Site Sponsor

20 Year Member
 
Joined: Jun 2001
Posts: 6,469
Likes: 13
From: Ball Ground, GA
Default

If you want to get fancy:
- Tender output wire hard-wired to the jump start post, with the wire run out to the grille area, where it is firmly anchored at a polarized connector. (The tender that I use comes with this connector in the charging wire.)
- Tender unit mounted near the front of the car, with the output wire run to the polarized connector on the car. The output wire from the tender is firmly anchored to the garage wall, so that the connector will pull apart if (when) you forget to unplug it and back out of the garage.
Reply
Old May 6, 2013 | 03:54 PM
  #3  
The Fixer's Avatar
The Fixer
Drifting
 
Joined: Dec 2012
Posts: 2,453
Likes: 8
From: Pennsyltucky
Default

I just take 1 minute and disconnect my battery ground at the body where tools are stowed.
Reply
Old May 6, 2013 | 03:54 PM
  #4  
MainePorsche's Avatar
MainePorsche
Nordschleife Master
 
Joined: Jul 2011
Posts: 5,662
Likes: 25
From: North Country
Default

I've hooked two wires to the battery direct from the female end of a trailer hitch pigtail. The mail ends I connected to the Schumacher charging unit I use. The 'in car' pigtail fits nicely behind the tool tray. The Male end I chose is very long wires, and works nicely in my garage. Plus I can detach the ground strap for work and still tend the battery. It is an easy plug in, plug out set up. Not fancy, but functional.
Attached Images
File Type: jpg
battery pigtail.jpg (92.4 KB, 832 views)
Reply
Old May 6, 2013 | 04:14 PM
  #5  
SeanR's Avatar
SeanR
Rennlist Member
 
Joined: Apr 2006
Posts: 35,695
Likes: 511
Default

I hook them up like Wally talks about but leave the pigtail just in front of the radiator, tucks in nicely against the fender and you don't know it is there unless you are looking for it. Pop the hood and hook it up.

Schumacher at Walmart makes a nice one.
Reply
Old May 6, 2013 | 04:39 PM
  #6  
joejoe's Avatar
joejoe
Rennlist Member
15 Year Member
 
Joined: Oct 2006
Posts: 1,590
Likes: 48
From: Porterville, Ca.
Default

I ran the leads from battery out the vent on bottom. Tied the end to hanger and left about 2" free. It hangs high enough not to get caught and is easily reached to plug in.
Reply
Old May 6, 2013 | 05:38 PM
  #7  
polecat702's Avatar
polecat702
Thread Starter
Vegas, Baby!
Rennlist Member
Veteran: Navy
Veteran: Marine Corps
15 Year Member
 
Joined: May 2009
Posts: 11,555
Likes: 395
From: far away
Default

Thanks guys!
Reply
Old May 6, 2013 | 06:18 PM
  #8  
Bertrand Daoust's Avatar
Bertrand Daoust
Rennlist Member
20 Year Member
 
Joined: Oct 2005
Posts: 5,244
Likes: 1,466
From: Gatineau, Québec, Canada
Default

Nothing fancy here but it works well.
Fast and easy.
Attached Images
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

 Verdad Gallardo
story-1

Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

 Verdad Gallardo
story-2

10 Porsche Colors That Have More Personality Than Most People

 Verdad Gallardo
story-3

Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

 Verdad Gallardo
story-4

10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)

 Joe Kucinski
story-5

Porsche Shakes Up The Nürburgring Lap Record Table Once Again

 Verdad Gallardo
story-6

6 Ways the Porsche 911 GT3 S/C Redefines Performance

 Joe Kucinski
story-7

10 Wildest Homologation Specials Porsche Ever Sold

 Verdad Gallardo
story-8

Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home

 Verdad Gallardo
story-9

10 Porsche Opinions That Can Start a Fight

 Joe Kucinski
Old May 6, 2013 | 07:49 PM
  #9  
wg928's Avatar
wg928
Rennlist Member
20 Year Member
 
Joined: Feb 2004
Posts: 407
Likes: 10
From: NYC
Default

I have switched the negatine battery strap on my both cars and leave the girls to bed for months at a time ...."switch on" equals ready starts for the next drive....hope I'm not damaging anything electronic
Reply
Old May 8, 2013 | 07:49 AM
  #10  
danglerb's Avatar
danglerb
Nordschleife Master
 
Joined: Oct 2006
Posts: 8,575
Likes: 5
From: Orange, Cal
Default

I put a GAMA side post battery switch on both 928's, not on the battery, but between the ground strap and chassis connection. Requires a really "fat" washer to raise the switch up from the frame, but its reliable and quick to use.

GAMA is made in the USA, sold on ebay for about $12 shipped.

Amazon has the Battery Tender Jrs cheap, as well as the accessory connection pack, spare hook up wires to use the tender on more than one car.
Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger : Amazon.com : Automotive Battery Tender 021-0123 Battery Tender Junior 12V Battery Charger : Amazon.com : Automotive
Reply
Old May 8, 2013 | 11:26 AM
  #11  
Alan's Avatar
Alan
Electron Wrangler
Lifetime Rennlist
Member
20 Year Member
 
Joined: Mar 2002
Posts: 13,657
Likes: 616
From: Phoenix AZ
Default

Like Wally said - except this has a socket in the grille area you can just plug a 110v power feed connector into...

Alan
Attached Images
File Type: jpg
Aux Batt Locn.jpg (103.8 KB, 766 views)
Reply
Old May 8, 2013 | 12:21 PM
  #12  
mdkelly1's Avatar
mdkelly1
Rennlist Member
15 Year Member
 
Joined: Mar 2007
Posts: 671
Likes: 213
From: Vero Beach, FL.
Default

Have used the same approach as Bertrand (post #8) for the past 15 years whenever the 928 is on a maintainer (a Schumacher in this case). Works great.

I normally disconnect the battery ground strap behind the tool panel when storing the car for long periods if it is not on a maintainer.

I use a dedicated (permanent) pigtail connection to the battery on the 996TT since it is just under the upper lip of the hood outside the insulated area. A CTEK maintainer (with the included connectors) works fine for that.
Reply
Old May 8, 2013 | 08:59 PM
  #13  
polecat702's Avatar
polecat702
Thread Starter
Vegas, Baby!
Rennlist Member
Veteran: Navy
Veteran: Marine Corps
15 Year Member
 
Joined: May 2009
Posts: 11,555
Likes: 395
From: far away
Default

I was concerned about using the jump post. I thought it might screw up the LH.

As always, Alan is over the top! I think I'll go with a quick connect pig tail.

Thanks again!
Reply
Old May 8, 2013 | 09:07 PM
  #14  
Alan's Avatar
Alan
Electron Wrangler
Lifetime Rennlist
Member
20 Year Member
 
Joined: Mar 2002
Posts: 13,657
Likes: 616
From: Phoenix AZ
Default

Originally Posted by polecat702
I was concerned about using the jump post. I thought it might screw up the LH.

As always, Alan is over the top! I think I'll go with a quick connect pig tail.

Thanks again!
You may be right about that... Anyway jump post or battery direct is the same thing as far as the LH is concerned.

A battery maintainer of good quality is a safe bet here even while all is still connected up (these are low current and have good voltage regulation), however do not connect a med/high current charger without disconnecting the battery from the vehicle (at least one post). Ideal mechanism here is to disconnect the ground strap with a battery switch and add a charger port at the back somewhere with a direct battery connection - of course I have both of those too!

Alan
Reply
Old May 8, 2013 | 09:12 PM
  #15  
MainePorsche's Avatar
MainePorsche
Nordschleife Master
 
Joined: Jul 2011
Posts: 5,662
Likes: 25
From: North Country
Default

Originally Posted by polecat702
I was concerned about using the jump post. I thought it might screw up the LH.

As always, Alan is over the top! I think I'll go with a quick connect pig tail.

Thanks again!
If you're going to go quick connect pigtail to battery (like my set up), Wally reviewed and suggested an inline fuse to positive. On my pigtail pictured brown was negative and green was positive. He recommended a 10 amp fuse. I like the direct to battery set up for I can tend the battery while working on the electrics with ground strap disconnected. Also the maintainer is isolated from the cars sensitive components in case of a spike. Battery is fuse protected.
Reply



All times are GMT -3. The time now is 11:06 PM.

story-0
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture

Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.

By Verdad Gallardo | 2026-04-28 19:00:17


VIEW MORE
story-1
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look

Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.

By Verdad Gallardo | 2026-04-27 19:39:30


VIEW MORE
story-2
10 Porsche Colors That Have More Personality Than Most People

Slideshow: Porsche's wildest paint colors aren't just shades-they're full-blown personalities on four wheels.

By Verdad Gallardo | 2026-04-27 19:38:13


VIEW MORE
story-3
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod

Slideshow: The last of the Speedsters doesn't just close a chapter, it makes quite the bold, air-cooled statement.

By Verdad Gallardo | 2026-04-22 17:55:04


VIEW MORE
story-4
10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)

Slideshow: Going to a Porsche dealership may not be the dream experience you expect it to be and these are the reasons why.

By Joe Kucinski | 2026-04-21 13:54:19


VIEW MORE
story-5
Porsche Shakes Up The Nürburgring Lap Record Table Once Again

Slideshow: Porsche just proved-again-that precision engineering can outrun brute force at the Nürburgring.

By Verdad Gallardo | 2026-04-18 20:27:02


VIEW MORE
story-6
6 Ways the Porsche 911 GT3 S/C Redefines Performance

Slideshow: Six reasons why you will love the Porsche 911 GT3 S/C and 1 reason you will hate it.

By Joe Kucinski | 2026-04-14 10:21:39


VIEW MORE
story-7
10 Wildest Homologation Specials Porsche Ever Sold

Slideshow: Some of the most desirable Porsche models are those that were sold to the public solely for homologation purposes.

By Verdad Gallardo | 2026-04-08 09:54:26


VIEW MORE
story-8
Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home

Slideshow: The lone BTR III-spec Targa features rare RUF engineering with a 430-hp turbo flat-six and fewer than 30 miles since its rebuild.

By Verdad Gallardo | 2026-04-06 20:03:25


VIEW MORE
story-9
10 Porsche Opinions That Can Start a Fight

Slideshow: If you want to start a debate with a Porsche friend, these 10 opinions are a great way to get started.

By Joe Kucinski | 2026-04-02 16:53:02


VIEW MORE