SBLVRO:

Here is what I see from CTEK:

Original Battery Charger for your Land Rover

CTEK manufactures the battery chargers for Land Rover and most other car brands.

Your car has a designated charging port to which the CTEK charger plugs into.

We include a CTEK charger and the Land Rover adapter to fit your charging port.

This suggests you need a CTEK cable which clips onto the posts under the hood. Unless there is another designated location to plug in a charger?

I also see CTEK Land Rover labeled chargers for Lead-Acid batteries -- you need AGM.

 

https://landroverforums.com/forum/ne...disco-v-93189/

This link is really interesting on how to trickle charge a D5 and how sensitive the vehicle is to being able to maintain voltage without getting a warning notice on charging.

Fun learnings ...... a new world of driving around a 12V DC powered rolling computer


"There are access posts under the hood for jump startng the D5, I’m sure those can be used with a good battery trickle charger.
The issue however seems to be that the battery needs a proper charge, as it should take more than a few minutes for the low battery warning to kick in. Perhaps take her for a nice long drive 30 miles or more and see how it goes afterwards."

"You are correct about the 3 minutes or so. It doesn't mean your battery is low or weak. It can be fully charged but you can't sit in the D5 and listen to the radio without it shutting down in a few minutes, I can't recall how many, but certainly less than 10 minutes. Then you can't just turn it back on. You can if you restart it briefly. I'd love to disable that feature."

"I tested it out today:
Drove D5. Parked. Pressed Start/Stop button once to turn off engine. The radio continued to run for 9 minutes, then gave a message it would shut down in 1 minute, and it did shut down at the 10 minute mark.
I pressed the radio power button once. Radio came on for 9 minutes, gave message it would shut down in 1 minute, and it did shut down at the 10 minute mark.
I repeated this 2 more times and got it to run for a total of 30 minutes. I believe it would have repeated more iterations but I had to start the D5 to run an errand.
I don't see this procedure to be a problem if you want to listen to the radio while parked. I believe most modern vehicles will turn off the radio after an amount of time."

 

Here is my CTek charger? VPLWV0093

 

SBLVRO - did you read my post in the other thread you have on this? https://landroverforums.com/forum/20...tender-103911/

As stated above - I would NOT just plug it into an accessory outlet in the vehicle unless someone can find some specific literature that states that can be done safely.

AndrewT

 

For those that are interested Shedlock 2000 did a whole youtube clip on charging the defender.

 

My two cents as long time AGM owner in boats-for what it’s worth.

I too noticed the safety shutdown of the radio after several minutes in my Defender and just figured it is some sort of reminder not to drain the battery too much. Right out of the box in my new Defender back in October waiting in ferry lines I got the low battery warning. I wondered about my 2 battery low warnings which both came very early in ownership. Right off the boat and then sitting in the shop waiting for mud flaps. I thought it might be a sensing mistake at first but now I believe it was functioning as designed.

I have a good bit of experience with AGM batteries on my boat. They are great long lived batteries if properly maintained. They are different than lead acid as far as what voltage your system should put into them. They are capable of taking a good bit of charge fairly fast but then assuming a properly designed system that ends at around 80% after which a good system will step down the voltage to finish the charging. If because of transit and being new combined with initial ownership short drives the AGM could have been deeply discharged. It usually requires a drain of sorts on a properly charged battery to cause this. Since it is too hard for any of us to know what the sequence was and what drains were put on our vehicles in transit we should probably assume many could have been deeply discharged at delivery. I recall my dealer mentioning something about having some battery issues they were looking at with my Defender just before delivery in October.

Once discharge to 50% or less, it does take a while to get it up to a proper charge. Once there it is fine. Normally one of AGM ‘s strengths is a less than 1% loss of charge without use every 30 days. I can certainly attest to this with 10 years of performance from our small dinghy AGM. Just don’t have it sitting with some drain on the system for long periods. In our case the warnings ceased with two or three multi hour drives in quick succession. Probably enough time to let the last 20 % or so trickle up to 100% with whatever system is in the car. We were fortunate that the battery state was not that low. I think that is why folks have had good success with smart chargers that made up for all the new battery long transit unknowns. Once up to speed we should all be very happy with these batteries.

 

We bought a new 2020 Defender in Chicago and drove it home for 500 miles. You would think that drive fully charged the battery. Second night it gave low battery warning. I saw the YouTube video posted in here. Bought the recommended Noco Genius5 battery charger with AGM mode, charged it overnight from the front hood battery terminals, it has been perfect since then. I guess Defender with AGM battery requires occasional or initial charging after long sitting.

 

I took delivery today of my MY22 P400 110 SE. After seeing this I took the same route as above by ordering the Noco charger just in case. Got the vehicle to the house and hooked up to the battery…sure enough it showed less than 25% charge.

Side note: I thought it was weird that no interior lights come on automatically when the doors are opened. Is that normal?