What issue are you trying to solve by using an expensive lithium battery vs a less expensive SLA or AGM battery? I prefer money in my pocket, less flammable batteries, and the extended reserve capacity of an AGM, so that's what I went with.

 

Well it turns out there is not a deal of difference in the price. There is a huge difference in weight. The Treg battery with start stop is an AGM and apparently a big one. The same one used in the Cayenne. The lithium however will not **** itself by letting itself run dead flat. The BMS turns it off before anything bad happens. This all happened because we went away over winter and the car was left alone for over 3 months. The new battery I installed before we left is now pretty much cactus.

 

Interesting read, seems like they have a good offering, and hope the product will live upto it.
I dont know of anyone who has replaced their existing battery with Lithium. Sure some have used Lithium batteries to power ancillaries.
Are you planning to go ahead and do it? Will be good to know how you go. The weight savings and the extra power atleast theoretically makes sense.
The only real concern is how the Touareg charging module will behave towards this type/spec of battery.....

 

The AGM for the Touareg is half the price of that here in the US, unless you are comparing installed price at the dealer to uninstalled price not at at the dealer.
Put the Touareg in Transport mode if you're going to be storing it for a while- it keeps the battery from going flat.

 

Put the Touareg in Transport mode if you're going to be storing it for a while- it keeps the battery from going flat.

I know that is used when vehicles are shipped around the world but don't you need an outboard power supply to maintain the battery for that to work?

tonyB

 

Good to know, thanks.
Do you know how to get it into "transport" mode?

TonyB

 

Vcds

 

Just left the Touareg sitting in the garage for 5 weeks and it fired up just fine on return (7yo battery). Planning a 10 week trip away next year and don’t have VCDS to enable transport mode. Does anyone here use a battery maintainer in these circumstances or are there any issues in using one? Was thinking about a quality charger like one of the Ctek units.

 

Re your original post Tim, I would be very interested in the outcome, especially if you opt for the lithium battery. I probably won’t replace mine until it starts to fail, but I figure that I will need one within the next couple of years.

 

@RocketTech ... are there instructions available on setting "Transport mode" could you please provide if you know?
(I have searched the forum and found several references but no instructions, or is this a push button setting in VCDS only)

I really hate talking about batteries, batteries (just like home appliances) all belong to the same union and will fail en-masse if slightly offended or just when you feel overly confident of success!

I am planning to hibernate for the remainder of our summer/spring, the car (and I) will be out of action for several months whilst my ankle enjoys the company of a moon boot. I do have a suitable charger which I could use, and will likely be able to manage the ambiance of diesel fumes in the garage accompanied by the dulcet sounds of the v6 if really desperate! Just don't want to lose a battery to sitting idle.

 

Ross-Tech: VCDS Tour - Transport Mode

 

I'm looking at replacing the battery in my 7P 180 TDI. I was wondering if any one has replaced their AGM battery with a lithium one? I came across this in my wanderings and thought it might make aa suitable replacement.

Lithium Car Battery 12V Stop Start 1420amp 60Ah | iTechworld

Hi Tim, Have you, or anyone else fitted the Lithiums to your Treg. Mine is a 2009 R50 and I need to replace my batteries now. Thanks, Dan

 

The transport mode button is in the driver side door pocket just push and hold for a couple of seconds

 

I have this button on my 7L & 7P, it is used to turn off the interior motion and tilt alarm only. Has nothing to do with the battery. It is used when transporting the vehicle on a tilt tray truck or when using ferries in rough seas. It is also useful for when you leave a dog inside the vehicle. If you catch the Spirit of Tasmania ferry , the loading attendants will ask you to activate it to stop alarms going off during the voyage.

 

I can't see anything in my 7L drivers (RHS) door pocket, would it be model specific, in what model did you see it?

A bit of conflicting posts above, has anyone actually used it in an aged (old) vehicle?
If anyone has, have you found any befefits from using this feature as it seems to me its only designed for new vehicles during the transit period from production to resale by dealer.

TonyB

 

Mine is the 7p not sure if the 7l has it or not shouldnt be that hard to find out owners manual should list any transport mode buttons

 

Thanks, I don't recally ever seeing anything in the 7L manual regarding transport buttons, the only thing I do recall is that there is a connector (or mention of) in the underfloor battery box to which a temporary power supply is connected to maintain the battery in the shipping/transport phase from factory to dealer, not sure if factory fitted or fitted by the contract carrier or wholesaler.

Possibly for those looking to keep batteries going in long term storage it may pay to look for that connector and connect a small maintenance cherger <1A to float the battery rather than to use the jump post under the hood, but I doubt there would be any real advange to shorten the cable distance by around 1 metre however there may be seeing we are only using a small 800mA charger or there abouts.

Possibly someone with good 12VDC technical knowledge may add their thoughts as I'm always looking to learn even after three score + years......

TonyB

 

@Colin G
I have a hatch release and a button for safety lock in the drivers door.
Didn’t see anything else, could you be more specific please?

 

Hi Tony as stated i dont know about the 7L it may be a power source plug for when you are changing the main battery to keep radio and clock settings while the main battery is disconnected i dont think they would remove the seat and plug in a power source for transport
Regards
Colin

 

Hi Colin, should have been a little bit more specific.

I need to add that I have never seen the plug or the charging method used other than a mention of it in the manual, I guess the plug/wiring would actually protrude from under the seat from factory so no need to move seat and I expect the dealer in their pre delivery would disconnect and drop plug into battery box, it's also possible that they remove it altogether.
Would be happy to be corrected if this is not the case, don't forget that I'm talking about the 7L here. Maybe they've done away with this in later models, anyhow I got my new Varta battery which I plan to install soon so will have a look to see if the plug is there and post a pic to clarify .

TonyB

 

@Colin G
can you provide some more detail on this in regard to the 7P please?
maybe a photo/description of which button you are referring to?

 

@seafarer28 Hi Tony,
Have you considered maybe charging via your trailer Anderson plug, although that may be disable via a relay when the engine is off?

 

Grant,

Thanks, but I'm fully sorted with my 12V charging needs, have more stuff than I need.
Just joining in the discussion and trying to help others to gain a better understand on what, how and where.

TonyB

 

I'm looking at replacing the battery in my 7P 180 TDI. I was wondering if any one has replaced their AGM battery with a lithium one? I came across this in my wanderings and thought it might make aa suitable replacement.

Lithium Car Battery 12V Stop Start 1420amp 60Ah | iTechworld

Hi Tim, I am really interested to hear how the iTech battery performed. I am particularly interested to see if it is compatible with the Touareg charger and electronics.
I have 2 iTech 120s in my caravan and they are great.
Ron

 

I wish I could help, but the car battery has been behaving itself and I haven't gotten around to it. I also have 3 of those Itech 120's in my motorhome, and as you say, they are great.

 

I'm looking at replacing the battery in my 7P 180 TDI. I was wondering if any one has replaced their AGM battery with a lithium one? I came across this in my wanderings and thought it might make aa suitable replacement.

Lithium Car Battery 12V Stop Start 1420amp 60Ah | iTechworld

I realise that this is an older post I was just wondering exactly how the Alternator output satisfies the constant current constant voltage charge requirements for a LiFePo4 battery. also the fact that the charge shuts off when the battery is fully charged unlike the lead acid batteries that continue to accept a trickle charge.. and what effect does the battery's almost constant voltage characteristic of 13.4 to 14.2 Volts until its almost 70% discharged.... considering that the smart alternator (ECU controlled) reduces the voltage to under 13.2 volts once it senses a battery voltage of less than that. In spite of what Itech world say about their battery the BMS system can only prevent battery overcharge if the battery input voltage is above above 14.6 volts the trickle charge is nominally 13.4 volts for a Lead Acid battery - with I LiFePo4 the input of a constant trickle charge current of around 1 amp ac cause cell damage.

 

I talked to my local specialist battery supplier here in Melbourne who has conventional, AGM and Lithium batteries ( not Itechworld however) for my 7P. My 2013 V8 came originally with a conventional flooded Varta battery. I replaced it with a Korean AGM battery for about the same cost as a Varta or Bosch replacement conventional battery and this has worked without problem. He was not confident of the compatibility of any of his Lithium batteries and did not believe it was worth the cost in any case.

cheers
Rohan