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TOPIC: Trickle charger suggestions/help

Trickle charger suggestions/help 24 Aug 2012 22:33 #10552


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Everyone,

I've been informed my car is NOT happy with my being gone, and has refused to start at least twice since. Once it was jumped by a local 928er, and this week as the wife was trying to take it to the store it was again resistant to moving out of the garage.

I noticed that the battery had been going off prior to leaving, but I figured that it would be OK with my wife driving it regularly (once a week or so). Turns out I shouldn't have been lazy and just bought a damn charger.

So, does anyone have any suggestions to possibly get the car happier with a battery charger until I can get home? I'd like something that can be temporary for now, and that I can add semi-permanently to the car possibly in the future. I've got a neighbor who is a great wrench, but is NOT a 928 guy. Hopefully something would be easy that either him or even the wife to just plug in and forget about? I'd like it to be like a Battery Tender, and turn itself on and off when necessary.
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Trickle charger suggestions/help 24 Aug 2012 23:49 #10555


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Jon B.;10880 wrote:
....... I'd like it to be like a Battery Tender, and turn itself on and off when necessary.

That's the exact one I think most would recommend Jon. I just had to replace my 2+ yr old battery in my '85 last month. The lack of my regular driving it & the summer heat killed it. That shark has been kicked out of the garage since the end of last year so it stays covered on the driveway & the Fla sun can be brutal, even with a cover on the car.
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Trickle charger suggestions/help 25 Aug 2012 00:11 #10556


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Thanks for the recommendation, I appreciate it!

Well now here's the other question. If I were to go with the Battery Tender, which should it be? I'm thinking that the $65 "Plus" would be better in the long run than the cheaper "Junior".

Right now I think I'm leaning towards the "Plus" and it should be more than enough to get the car happy enough to go grocery shopping every week or so. I'm going to have to check the charging system out once I return obviously, but I really think it's just the battery getting old. Plus I can use it on the "others" if they need to sit for a spell. I'm going to be dividing my time between my Lightning and the 928 once I'm home.

I'm already allotting a good couple grand for "return maintenance", plus new exhaust, so what's another $65?
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Trickle charger suggestions/help 25 Aug 2012 00:19 #10557


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You'll have to keep us posted on how you like the Plus model, I've considered getting that one myself. The difference in the cost is nominal. I believe they make the Battery Tender brand not too far from me, just west of Daytona in Deland. I've driven past their facility many times.

If your shark sits outside like my '85, it might be the heat doing yours in, as with mine. Then you might consider a battery cut off switch once you have it good and charged up. That should eliminate the need for keeping it on the Battery Tender as any potential drain would be negated.
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Trickle charger suggestions/help 25 Aug 2012 00:25 #10558


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Jon,

I think you have seen my set ups for several of the sharks. I use the Schumacher battery tenders that you can get at WalMart and then put the pigtail out the back of the battery box (actually I think it is out the bottom of the box) and hide that tail up in the rear bumper cover when not in use. They work GREAT!
James
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Trickle charger suggestions/help 25 Aug 2012 00:29 #10559


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Well it doesn't sit outside, but the temperature in NC this summer has been really REALLY high. Really high humidity as well. So, I wouldn't doubt that is one of the issues. Honestly, I never had an issue until it started getting HOT. I never noticed one anyway. I can't play my drums in my garage without having the door open to the backyard, and the garage door open, so it does get pretty damn hot in the garage regardless.

I'll make sure to keep everyone posted. Hell, once I'm home and I connect the smaller leads maybe I'll make up a bit of a "walk-through". I honestly believe that nothing is wrong with the charging system. But the heat on a battery that was installed in CO vs NC could possibly be rearing it's head. I can't remember how old the battery is off the top of my head either.
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Trickle charger suggestions/help 25 Aug 2012 00:32 #10560


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pcar928fan;10886 wrote:
Jon,

I think you have seen my set ups for several of the sharks. I use the Schumacher battery tenders that you can get at WalMart and then put the pigtail out the back of the battery box (actually I think it is out the bottom of the box) and hide that tail up in the rear bumper cover when not in use. They work GREAT!

I do remember them, but had no idea who made them or where to start looking. I would have never guessed Wally-world.

With all the car-show stuff I watch I have picked up the Battery Tender guys and they seem to have a good reputation on pretty much all the forums I frequent.
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Trickle charger suggestions/help 25 Aug 2012 17:49 #10579


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^^^^
Right on. I think any of them are pretty good! For whatever reason the first one I got was a Schumacher and I liked it and it worked well, so I have just stuck w/ that brand.
James
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Trickle charger suggestions/help 27 Aug 2012 11:56 #10657


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The Battery Tender Plus is a very good unit, and the company is good to deal with. The unit comes with a long cord between the unit and the car, with a polarized connector in the middle, and several different ends to hook to the car.

You could use the end that has ring terminals and hook positive to the jump start terminal and ground to the body. Run the cord out to the grille and leave the connector where you can get to it easily. The wife would have no problem hooking it up - it can't be connected incorrectly.

Put the tender nearby and leave it plugged in. Attach the cord that goes to the car to the wall near the tender. Then, if if either of you forget to unplug the cord to the car. it should just pull the plug apart with no damage to the car or the tender unit.

This would also leave the car cord with the alligator battery clips available to use on the riding lawn mower battery, the motorcycle battery, etc. Just unplug the 928, plug the alligator clip cord to the tender, and hook it up.
Wally Plumley
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Trickle charger suggestions/help 27 Aug 2012 13:01 #10661


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wallyp;10992 wrote:
The Battery Tender Plus is a very good unit, and the company is good to deal with. The unit comes with a long cord between the unit and the car, with a polarized connector in the middle, and several different ends to hook to the car.

You could use the end that has ring terminals and hook positive to the jump start terminal and ground to the body. Run the cord out to the grille and leave the connector where you can get to it easily. The wife would have no problem hooking it up - it can't be connected incorrectly.

Put the tender nearby and leave it plugged in. Attach the cord that goes to the car to the wall near the tender. Then, if if either of you forget to unplug the cord to the car. it should just pull the plug apart with no damage to the car or the tender unit.

This would also leave the car cord with the alligator battery clips available to use on the riding lawn mower battery, the motorcycle battery, etc. Just unplug the 928, plug the alligator clip cord to the tender, and hook it up.

Yeah What he said! ^^^^^^
Especially the part about the connector thru the grille!
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Trickle charger suggestions/help 07 Sep 2012 19:54 #11096


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I ordered the Plus yesterday, and I'm hoping to find a good picture for my wife to reference for the banana clips. Anyone here have one they care to share?

I'll do the "hard-wire" once I get home.
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Trickle charger suggestions/help 09 Sep 2012 18:49 #11117


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i have an autometer battery extender. been using that for years. i just wired the plug to the battery and have the little pig tale under the rear bumper and plug it in at night..
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Trickle charger suggestions/help 10 Sep 2012 16:55 #11175


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The only thing I do not like about this solution is that it does not fix the problem.
I leave my car for 2-3 months at a time with it hooked up and I know that I can walk up and it will start.
I installed a good quality battery and I found my drain which was a rear defog relay.

Just my 2 cents.
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Trickle charger suggestions/help 10 Sep 2012 17:07 #11176


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This is mainly for when I am deployed, like now. It doesn't get driven regularly when I'm not home, and as the battery was going off before I left and I didn't get it replaced, this is my current solution.

Plus, I can use it to maintain other things as well, once I actually replace the battery. Before my battery started to kick the bucket, it could sit for a good while and not have any effects.

I'm going to check for drains regardless, no time now though!
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Trickle charger suggestions/help 10 Sep 2012 22:46 #11180


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Where are you deployed Jon and are you in an active zone.
We wish you to stay safe.
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Trickle charger suggestions/help 10 Sep 2012 23:21 #11181


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Doubt he can say... Though AFAIK he is NOT in the middle east!
James
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Trickle charger suggestions/help 11 Sep 2012 00:21 #11183


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Brad, I'm in Central America. I appreciate the thought!

My last two deployments were in Afghanistan though, so this is a NICE change.
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Trickle charger suggestions/help 11 Sep 2012 09:56 #11188


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i've had the drain issue with my car since day one. if i leave it un attended for more than 3 or 4 days the brand new battery will drain. got myself a jumb starter and im looking forward to having the electrical system in the car checked. one of my first issues was one of the lights inside the car, was blown but it was ON and still somehow pulling power. after the last time i re-charged the battery and plugged it back in, hmmm no lights or the clock work.
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Trickle charger suggestions/help 11 Sep 2012 10:32 #11189


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Very carefully pull the light above the rear view mirror out, and check the wiring. Be especially suspicious of the red wire touching the roof metal...
Wally Plumley
928 Specialists
www.928gt.com
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Trickle charger suggestions/help 11 Sep 2012 11:19 #11192


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i'll have that taken a look at.
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Trickle charger suggestions/help 11 Sep 2012 19:57 #11199


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I (well the wife) received the Battery Tender yesterday. I've got a neighbor taking out the battery for the initial charge, plus he's gonna test the battery. Then it'll go back in once fully charged, and the car will be on the maintainer until I get home, and whatever charging issues resolved. IF there are any.

He offered to test the alternator as well, but I really don't need an inexperienced hand "probing" my 928. He is a VERY good mechanic, but not a 928 mechanic at all.
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Trickle charger suggestions/help 14 Sep 2012 13:41 #11249


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I just happened to notice that O'Reiley's has the Battery Tender Jr on sale for $32.99 ($7 off) and the Battery Tender Plus on sale for $54.99 ($15 off).
Wally Plumley
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www.928gt.com
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Trickle charger suggestions/help 14 Sep 2012 17:02 #11253


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That's a pretty good price. I got mine from Battery Mart online, and it was right at $55 with shipping. It was originally $45ish.
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Trickle charger suggestions/help 27 Sep 2012 20:08 #11492


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Well, turns out my battery just needs to be replaced. So, what recommendations do you guys have? I tend to put Die-Hard stuff in my cars, but I can't remember the size that the 928 uses. I know it's HUGE. EDIT: Group 48 or 49 should be the one. I'm getting clarification on what was in there tomorrow.

I have a line on getting an Optima cheaper, but I'm NOT a huge fan honestly, and they're WAY overpriced regardless.

I've had decent success with Duralast stuff too. But, I prefer my batteries from Sears!
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Trickle charger suggestions/help 27 Sep 2012 22:57 #11496


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I don't know the correct number for any of those brands. I have heard the correct ones talked about in a few threads.
Maybe Malcolm or James or someone knows and will speak up.

I use a Optima yellow top with the post on the wrong side so I had to change my cables.
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Trickle charger suggestions/help 27 Sep 2012 23:55 #11497


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Brad, I thought that I had read that the Optima was a touch too tall for the battery compartment?
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Trickle charger suggestions/help 28 Sep 2012 11:28 #11510


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i used a bosch #48 from pepboys. seems pretty resilient, even with my car's drain issues.
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Trickle charger suggestions/help 28 Sep 2012 22:01 #11519


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Jon B.;11839 wrote:
Brad, I thought that I had read that the Optima was a touch too tall for the battery compartment?

No there seems to be lots of room in my 89 euro
The black tape on the power cable is only for extra protection against rubbing.





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Trickle charger suggestions/help 28 Sep 2012 23:30 #11520


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Thanks Brad!
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Trickle charger suggestions/help 29 Sep 2012 00:02 #11521


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Jon B.;11863 wrote:
Thanks Brad!

No problem Jon.
They are expensive but in my opinion an unreliable car is no good.
I spent $700 on a 200 amp alternator and $300 on that battery and in 3 years I have never had to boost it.
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Trickle charger suggestions/help 29 Sep 2012 21:11 #11534


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I have been using the same as James , Schumacher trickler charger for about 12 years now, works great! I have it connected in the spare tire well and extension cord comes up and out the hatch when I am in the garage and just plugs in. I am on my third battery in 16 years, they really seem to last quite long when kept charged.
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Trickle charger suggestions/help 18 Oct 2012 00:56 #11889


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Update, new replacement Bosch battery is in the car. My wife reports that the 928 is happy now.
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Trickle charger suggestions/help 18 Oct 2012 19:27 #11896


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928mac;11514 wrote:
The only thing I do not like about this solution is that it does not fix the problem.
I leave my car for 2-3 months at a time with it hooked up and I know that I can walk up and it will start.
I installed a good quality battery and I found my drain which was a rear defog relay.

Just my 2 cents.

So you leave town for a while? I would suggest asking a friend to come over and start the car at least weekly. Turn the air conditioning on monthly [the Porsche manual directs this].

For a while I lived in Orlando and worked out of Brussels, and only spent a week each month at my house in Flori-duh. My car sat for three weeks at a time, and it HATED this! I never ever had a battery issue, but it sounded dry each time I started it up. I blew blue smoke when I got on it after letting it sit for weeks, I always let it warm up completely. These days I work for an airline that puts me at home far more often [though I fly into Calgary and Edmonton on occasion-], and I use 10W40 instead of the thick Castrol 20W50, which probably saved my rings, but is not necessary now.

-I have a boat that sits in the canal behind my house in Fort Lauderdale year round, and it is kept open. I have bottom paint, renew it each 6 months. I don't have canvas covers, but it is a cheap boat, and the bilge pump runs. For a while I ran into trouble with the bilge pump dying. I figured it was just a wet year, but something began to stink in Denmark; On a whim, I took that marine battery to the local parts store and sure enough: It had a BAD cell! They GAVE me, free of charge, a new battery. Guess what? Same bilge pump...but not a BIT of trouble. I am convinced that modern batteries are JUNK!!!!! You're having trouble with your battery? Alberta is just as warm as south Florida in the summers. CHANGE that thing and you can't go wrong!

N
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