Batteries

**DiscoJeffster** · 9th April 2019, 09:10 PM

Originally Posted by BradC

That makes a huge difference in keeping sulphation at bay and is a good way to make a battery last longer.

I have a cal entry and at minimum once a month the ctek 7000 goes onto the car for 24 hours.

**BradC** · 10th April 2019, 05:27 PM

Just to round this out I did another 2 charge/discharge cycles, and it's taking about 24AH to charge and giving about 19.5-20AH to the load. That's about where it should be.

The battery is down to ~25% of its actual capacity but was perfectly capable of keeping the vehicle running provided it was driven a couple of times a week.

**Chops** · 10th April 2019, 09:24 PM

**Eric SDV6SE** · 10th April 2019, 11:15 PM

Must be jinxing things BradC, I had the "charge system fault" come up tonight, still drove home fine, the battery is now on the charger, still have to get the code out of the car, but suspect it's the alternator calling it a day after 188,000kms. Car has run fault free for over 10 months.

**BradC** · 11th April 2019, 12:19 AM

Originally Posted by Eric SDV6SE

Car has run fault free for over 10 months.

It's pretty sad when we get excited about the number of *months* between faults.

**Eric SDV6SE** · 11th April 2019, 01:07 PM

Originally Posted by BradC

It's pretty sad when we get excited about the number of *months* between faults.

Haha, can't say I'm excited, but I get your point.

I should qualify that statement in that the car has not ever "simply stopped". There's always ample warning and so far in 5 years of ownership has ALWAYS gotten us home safely.

For that I applaud the error messages and info system, it allows you to have a place to start fault finding from.

**Sven94** · 15th April 2019, 07:52 PM

Re battery date code.. post what you have got.

also google will help to decode it if I cant.

**BradC** · 15th April 2019, 07:58 PM

Originally Posted by Sven94

Re battery date code.. post what you have got.

also google will help to decode it if I cant.

Existing battery was : 5051941

New battery has 2. 722358535 / 1183711

**DiscoJeffster** · 20th April 2019, 06:07 PM

Varta stamp their manu date on the lead terminal. I found out my Audi car battery was 11 years old from that!

**scarry** · 20th April 2019, 08:16 PM

The old wet cell supercharge in the S1 in my sig is 14 yrs old.

Kept on charge a lot,it only gets a run every month or so.

i ended up replacing the battery in the D4 with an Austral battery,AGM.

It was six yrs old by the date code,and had been in the vehicle for 5 yrs,a genuine JLR battery,replaced when the vehicle was under warranty.

I have a cig lighter voltage display,and it was sitting around 12.2 to 12.3 after a good overnight charge with the C tech,so i knew it was a bit tired.

It now sits on 12.7V,all the time.

Apart from the weight,the battery was pretty easy to change.

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