trickle charging

both batteries will be charged if you connect the charger to one of them.

To connect a charger that continously feed 2amps is not good for long term.
You could end up "boiling" both your batteries.

I recommend you to do as me and other have done and get an intelligent charger.
This way you will never overcharge or damage your batteries even during long term storage. Just plug it in and forget.

I have a CTEK charger in my boot, it's the size of a beer can and have several modes.
I have the US 7000, 139usd.

https://www.shopatron.com/prod…6-159/560.0.23205.0.0.0.0

CteK

Hi!
I also have the CTEK7000!
It´s a great tool! I have 12,5 volts on batteries! And each cell from each battery is in the green level..!!
I started the car today without any problems! (for climate control)

Greetings from Austria!

Richard

Solar Charger

Hi

Or you could go eco friendly and use a solar panel charger, which plugs into your cigarette lighter socket (just make sure it is live with the ignition off, mine is) and away you go, dead easy install.

I actually use it to keep my TVR Chimeara charged over winter, these cars have a real habit of killing batteries. and it seems works a treat, Just screwed it to the outside of the garage and trailed the lead inside.

Have a look here this is the one i use:-
http://www.power-store.com/view-item.asp?itemid=193&id=35&

Regards
Rob

Ctek is the best charger for your batteries.

Click here for some videos

The Ctek Multi XS 7000 is the right one.

Don't disagree with CTek. It is the best conditioner/charger for layups without disconnecting anything

The TVR has got one in the boot as well prewired to the battery, but i have no power in my garage so it is of no use what so ever.

And Solar Power is free!

Rob

Zitat von robmarrs;57989

Don't disagree with CTek. It is the best conditioner/charger for layups without disconnecting anything

The TVR has got one in the boot as well prewired to the battery, but i have no power in my garage so it is of no use what so ever.

And Solar Power is free!

Rob

Alles anzeigen

Solar power sounds good, however in my case during the winter we dont have daylight for more than 6-7 hours, and not much light gets into my garage either.
So it really is not an option for me, but it's a good idea.

Hi Noggie

You mount it outside your garage on a place that gets most sun.

Yep Stavanger is a long way north! i guess there are not many months you get to use your 8 either

My mum is from Oslo.

Rob

Zitat von robmarrs;57986

Have a look here this is the one i use:-
http://www.power-store.com/view-item.asp?itemid=193&id=35&

The problem with that is that the manufacturer states it can be used for batteries up to 50 Ah. The 8 has two batteries of 70 Ah each: 140 Ah! With the amount of electrical items that lay dormant but not completely asleep in the 8, I'm not sure it'd be sufficient over a number of months.

I guess if access to mains power is an issue, you could buy two of them and connect them in parallel. Maybe one on each battery, how convenient although obviously it makes no difference if you connect both to one battery as they're in parallel anyway.

Zitat von robmarrs;58016

Hi Noggie

You mount it outside your garage on a place that gets most sun.

Yep Stavanger is a long way north! i guess there are not many months you get to use your 8 either

My mum is from Oslo.

Rob

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yes it is pretty far north, but on the west coast of Norway we don't have much snow in the winter, it's usually from -5 to +5C during the winter, and maybe 10-15 days of snow in total.
We do have alot of frost though, so the roads are heavily salted, and I don't drive my 8 on salty roads.
but I live by the coast, move just 20-30km inland and you have a lot of snow.

My 8'er season is usually from mid-late April through October, so about 6-7 months, and half of those I'm at work (28/28 rotation world wide).

Writing this from Singapore, 30++ here today, and in Stavanger it was -9 the other day

8's parked in my storage, and the M3 in in my carport.

I have been using the 'Battery Tender' for the last 2 years and it really is foolproof. I made a permanent connection under the hood to the B+ and ground terminals with one of the supplied leads that has a connector on the other end and just plug the charger in over the winter with absolutely no problems at all. It is an 'intelligent' piece of equipment and keeps the batteries in peak condition.

Have a look here for details -

www.batterytender.net

Zitat von hedgehog;58489

I have been using the 'Battery Tender' for the last 2 years and it really is foolproof. I made a permanent connection under the hood to the B+ and ground terminals with one of the supplied leads that has a connector on the other end and just plug the charger in over the winter with absolutely no problems at all. It is an 'intelligent' piece of equipment and keeps the batteries in peak condition.

Have a look here for details -

www.batterytender.net

I use a similar thing on my bike over winter, as it gets parked up in the garage for 4 or 5 months. Works a treat.