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My apologies if this has been covered, but my search did not find an answer for me.

My car, 1994 LS400.

Since the past year of lock downs etc, I have worked from home, with the odd days going to work once per week. Most of the time I use my bike weather permitting. When it's bad I take the car. 

However, when the car has stood for more than 2 weeks, maybe 3 or 4 then the Battery has no power to start the car. So I take it off and charge it, after that everything is good. (Battery is an Varta blue G7 and I have checked it when charged and it is in good condition). I do have a few extra electronic accessories on the car.

Now to the point. My question.

I have no problem charging the car when needed, but what I would like to know, does it do any harm if I charge (Trickle from smart charger) the Battery without disconnecting it from the car. At this time, I take the Battery off and charge it inside. But it is a bit of a pain having to retune all the radio stations, the clock etc.

I also don't know what this does to the gearbox learning and ECU. as at this time, each time I use the car, it is with a theoretically fresh fitted Battery

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As long as you're using a smart charger, and you say that you are, then charging in situ will be fine.

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1 hour ago, Herbie said:

As long as you're using a smart charger, and you say that you are, then charging in situ will be fine.

Thank you.

Yes, I have a Bosch smart charger that can trickle charge and keep Battery topped up during storage, so my plan is to once a week (weekends) to connect it for a day or 2)

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such a glorious car .......  just take her out for a spin once a week to mainly keep the cobwebs at bay and everything tickety-boo :wink3:

Malc

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Mine has been wired to a Smart charger since May 2020.
Since it's only getting driven once or twice a week and those are mostly short trips, it needed it.
No problems since I started using the Smart charger.

I ran wires (+ve wire fused at 10A) from the Battery to a connector that I cable tied to the centre support behind the grille.
I just have to lift the bonnet and plug or unplug it. I also fitted a "weak link" (2 connectors held together with insulating tape) so that if I do forget and drive off without disconnecting it, I won't short out the Battery or the charger.

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