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Littlered996
Newbie


Joined: 30 May 2017
Posts: 5



PostPosted: Sun Feb 24, 2019 7:50 pm    Post subject: Battery charging options Reply with quote

Hi all.
I have the usual winter battery woes and have invested in a CTEK CT5. I have no power in the garage, so it will be a question of occasional charging, rather than trickle charge. The options seem to be (1) park the car outside the house and run an extension cable across the pavement or (2) remove the battery and charge it in the house.
I’m nervous of removing the battery and would prefer to charge it in the car. Is the only option to attach the charger to the battery direct, or can I use the jump start points in the engine bay?
Simon
 
  
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moorhouse
Nürburgring


Joined: 15 Apr 2013
Posts: 495
Location: Northumberland


PostPosted: Sun Feb 24, 2019 9:04 pm    Post subject: Reply with quote

You can buy an extra lead that allows you to charge directly through the "cigarette lighter" or whatever you are supposed to call the 12V socket in these non-smoking days. The Ctek should also come with a set of short leads with rings you can attach direct to the battery terminals which will replace the crocodile clips. Can't imagine its a great idea to have to keep dis- and re-connecting the battery - bound to scramble some bit of the electrics, codes etc.
If you don't have power what about a solar charger - never used one myself so not sure how good they are, especially in a dull winter.

Cheers..Ian
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MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6961
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Sun Feb 24, 2019 9:17 pm    Post subject: Reply with quote

No problem with disconnecting the battery. Key to ignition position 1 and remove it. You will need to enter the radio code and reset the clock when it is reconnected. The only problem is that you can't lock the passenger door with it disconnected. Mine is probably disconnected 10 times a year for one thing or another.
I would connect eyelets to the battery and run an extension lead. Taking the battery out regularly would be a real pain.

MC
 
  
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Pip1968
Suzuka


Joined: 26 Oct 2009
Posts: 1162
Location: Blighty


PostPosted: Sun Feb 24, 2019 9:21 pm    Post subject: Reply with quote

I think the jump points in the boot are fine or the cigarette lighter or you can just run the connector to the edge of the bonnet (I cannot find GT4's post on this but he extended the Optimate connector so that there was no need to pop the bonnet for connection or disconnection of the trickle charger).

Pip
 
  
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HSC911
Long Beach


Joined: 23 Jul 2014
Posts: 6456
Location: Bedford


PostPosted: Sun Feb 24, 2019 9:36 pm    Post subject: Reply with quote

Welcome
 
  
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Rojdog
Silverstone


Joined: 08 Nov 2018
Posts: 103
Location: Essex


PostPosted: Sun Feb 24, 2019 10:12 pm    Post subject: Reply with quote

I have a ctek and find the cigarette lighter attachment the most useful. I first had the battery wired onto the quick connector they also sell but found the wires draping out of the bonnet over the wing started to mark the paintwork after a while.

The cigarette lighter also has a handy traffic light led indicator for battery state. Easily plugs into the passenger foot well socket.
 
  
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Littlered996
Newbie


Joined: 30 May 2017
Posts: 5



PostPosted: Sun Feb 24, 2019 11:53 pm    Post subject: Reply with quote

Great. Thanks one and all. Sounds like the lighter socket’s the way to go. I thought maybe that was just for trickle charging.
I know you like a photo.
 



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T8
General
General


Joined: 29 Jun 2010
Posts: 15331
Location: Kent


PostPosted: Mon Feb 25, 2019 12:54 am    Post subject: Reply with quote

The thread started by GT4 referred to earlier is this one.

--> http://911uk.com/viewtopic.php?t=47741&start=0&postdays=0&postorder=asc&highlight=optimate

Welcome to 911uk littlered'. Pretty car Thumb
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Marky911
Indianapolis


Joined: 04 Jun 2009
Posts: 2326



PostPosted: Mon Feb 25, 2019 7:37 am    Post subject: Reply with quote

Welcome little red 996. Thumb

Lovely colour. Is it Velvet red. Rare on a 996.

I have done what MC suggests and have a lead I made up with eyelets. I fit it to every car I buy and have an extension piece to get from that lead to the charger.
Cigarette lighter is another easy way though, as mentioned.
 
  
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ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2959
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Mon Feb 25, 2019 7:54 am    Post subject: Reply with quote

I normally just plug in at the battery terminals, leave the charger and extension lead in the trunk, the lid closes on the wire easily.. extension lead goes under garage door.
Is there a chance of screwing with the electronics doing it this way?
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sim996
Monza


Joined: 05 Aug 2017
Posts: 185



PostPosted: Mon Feb 25, 2019 8:22 am    Post subject: Reply with quote

ballcock wrote:
I normally just plug in at the battery terminals, leave the charger and extension lead in the trunk, the lid closes on the wire easily.. extension lead goes under garage door.
Is there a chance of screwing with the electronics doing it this way?


Maybe not on older cars, but in newer cars yes. The correct way is to connect to the battery positive and chassis earth. This way the car can sense the battery condition through the various electronics, otherwise they go haywire.
 
  
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Littlered996
Newbie


Joined: 30 May 2017
Posts: 5



PostPosted: Mon Feb 25, 2019 8:25 am    Post subject: Reply with quote

Orient red.
Thanks for the battery thoughts. I’m still intrigued by the charging points in the engine bay. Presumably there’s a good reason why Porsche advises using them for jump starts and wonder whether the same applies to charging?
Simon
 
  
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Paynewright
Monza


Joined: 17 Apr 2018
Posts: 158
Location: Nr Lutterworth Leics


PostPosted: Mon Feb 25, 2019 8:50 am    Post subject: Reply with quote

Would it be feasible to rig up a solar charger at the garage? You can get kit for narrowboats to maintain battery charge whilst moored up.

Ian
 
  
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cvega
Monza


Joined: 25 Feb 2013
Posts: 199



PostPosted: Mon Feb 25, 2019 11:15 am    Post subject: Reply with quote

Paynewright wrote:
Would it be feasible to rig up a solar charger at the garage? You can get kit for narrowboats to maintain battery charge whilst moored up.

Ian


was about to suggest this, a 20-50W solar panel, cheap ish charge controller and ciggy adapter and you're good to go. amazon.

Someone here has done this in their garage, can't quite remember who:(
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wasz
Sepang


Joined: 28 Dec 2012
Posts: 2916


1999 Porsche 996 Carrera 2

PostPosted: Mon Feb 25, 2019 11:51 am    Post subject: Reply with quote

I would disconnect the battery and run a solar charger to keep it topped off.

Get a quick disconnect thing in case you forget a 10mm spanner.
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Magic919
Suzuka


Joined: 05 Jun 2013
Posts: 1092
Location: Berkshire


PostPosted: Mon Feb 25, 2019 1:00 pm    Post subject: Reply with quote

cvega wrote:
Paynewright wrote:
Would it be feasible to rig up a solar charger at the garage? You can get kit for narrowboats to maintain battery charge whilst moored up.

Ian


was about to suggest this, a 20-50W solar panel, cheap ish charge controller and ciggy adapter and you're good to go. amazon.

Someone here has done this in their garage, can't quite remember who:(


Dammit?
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pzero
General
General


Joined: 18 Jul 2010
Posts: 5282
Location: London


PostPosted: Mon Feb 25, 2019 3:40 pm    Post subject: Reply with quote

Magic919 wrote:
cvega wrote:
Paynewright wrote:
Would it be feasible to rig up a solar charger at the garage? You can get kit for narrowboats to maintain battery charge whilst moored up.

Ian


was about to suggest this, a 20-50W solar panel, cheap ish charge controller and ciggy adapter and you're good to go. amazon.

Someone here has done this in their garage, can't quite remember who:(


Dammit?


No need to exclaim!

http://www.911uk.com/viewtopic.php?t=104190&postdays=0&postorder=asc&start=0
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Littlered996
Newbie


Joined: 30 May 2017
Posts: 5



PostPosted: Mon Feb 25, 2019 6:22 pm    Post subject: Reply with quote

I have a solar panel rigged up from garage door (south facing, unobstructed), in through passenger window and into diagnostic socket. Battery still drains every couple of weeks, esp in winter. New battery and Portiacraft have confirmed it’s good and no drain. I can usually jump it with a jump starter (except for the time the boot and frunk refused to open...) but the whole thing’s a monumental pain in the backside and means I dread going to start it, rather than relishing it as I should.
I like the suggestion of combining solar trickle with battery cut off. Perhaps use my new toy to do a full recondition, then try that.
S
 
  
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wasz
Sepang


Joined: 28 Dec 2012
Posts: 2916


1999 Porsche 996 Carrera 2

PostPosted: Mon Feb 25, 2019 6:48 pm    Post subject: Reply with quote

If you pop the hood, use a screwdriver to actuate the catch, then lock the car and then disconnect the battery the car will be locked too.

You can then disconnect the battery, hook the solar trickle charger up and let the hood down gently

Use something like this:



Just remember to "pop" the hood before you close it when driving off.....


EDIT: actually that might result in the alarm going off? I think my alarm battery is dead thats why I can do the above.
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asterix_the_gaul
Barcelona


Joined: 20 Dec 2008
Posts: 1262
Location: Cheshire

1999 Porsche 996 Carrera 2

PostPosted: Mon Feb 25, 2019 7:32 pm    Post subject: Reply with quote

Yes, difficult in that situation, when I was there I've run the charger out over the pavement and put a piece of offcut carpet over it to stop the trip Hazard and also tried the solar panel on the roof trick but encountered the low winter sun issue too. Battery disconnect link is really the best answer and take a decent charged jump pack in case. I found myself forever jumping off the car I drove over to the garage in then leaving it running filling with fuel etc so less than ideal if you don't use it every weekend without fail.
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