Having fun with a dead battery on the aventador

[DaveCRS4]

Left the lights on the other night now the battery is as dead as a dodo as you would expect

Doesn't help it being parked in the garage in a bloody carcoon !!

embarrassed to say i didnt even know these opened up :-)



Got it going........ then nearly ran out of fuel, so turned it off

My issue is the gearbox won't engage as the battery's so low ..... so I can't take it for a drive

Any help ?

Can i keep the battery on charge while the cars running ? or is that a bad idea ?

[NDA]

I was able to restore a properly flat battery with my normal CTEK MXS-5 trickle charger overnight - it's quite often the case (and might be with yours) that draining a battery damages it... but it didn't in my case.

Unless there's some urgent reason to take the car out in this rubbish weather, I'd leave it trickling overnight and hopefully the battery will be restored. I wouldn't charge when the engine is running - for a start, the charger will be seeing an incorrect battery charge condition.

[Ferruccio]

Plug in a CTEK charger in the port in the frunk on Recon and leave for 24 hours
If that doesn’t work you’ll need a new battery

[andrew]

Ferruccio said:

Plug in a CTEK charger in the port in the frunk on Recon and leave for 24 hours
If that doesn t work you ll need a new battery

+100%

[JCHill]

andrew said:

Ferruccio said:

Plug in a CTEK charger in the port in the frunk on Recon and leave for 24 hours
If that doesn t work you ll need a new battery

+100%

This 100%.

Failing that the OEM AGM battery isn’t stupidly expensive (00915089BB from Eurospares for my LP700-4) and is a DIY’able job with care. There’s quite a few tutorials out there as to how to go about it. I replaced mine last year for just over £300 including VAT and shipping costs. Just do plenty of research before attempting it, if you’re going the DIY route, as a total loss of power can cause issues so if you’re in any doubt let a dealer do it!

[JCHill]

DaveCRS4 said:

Left the lights on the other night now the battery is as dead as a dodo as you would expect

Doesn't help it being parked in the garage in a bloody carcoon !!

embarrassed to say i didnt even know these opened up :-)



Got it going........ then nearly ran out of fuel, so turned it off

My issue is the gearbox won't engage as the battery's so low ..... so I can't take it for a drive

Any help ?

Can i keep the battery on charge while the cars running ? or is that a bad idea ?

Just FYI. From memory, air vents open when one of three conditions are met…

Over 99mph
Over 35c ambient temperature
Oil temp over 110c

…obviously in the UK we don’t see any of those conditions! ;-)

[DaveCRS4]

JCHill said:

This 100%.

Failing that the OEM AGM battery isn t stupidly expensive (00915089BB from Eurospares for my LP700-4) and is a DIY able job with care. There s quite a few tutorials out there as to how to go about it. I replaced mine last year for just over £300 including VAT and shipping costs. Just do plenty of research before attempting it, if you re going the DIY route, as a total loss of power can cause issues so if you re in any doubt let a dealer do it!

Yeah looks like a new battery is needed as this is dead !!

JCHill what year is yours? just checking that i'm ordering the right battery as mine is 2015 and not sure if the earlier models all had stop start (which I believe is a different battery but could be wrong)

Thanks
David

[DaveCRS4]

JCHill said:

Just FYI. From memory, air vents open when one of three conditions are met

Over 99mph
Over 35c ambient temperature
Oil temp over 110c

obviously in the UK we don t see any of those conditions! ;-)

Maybe just one ? :-)

[JCHill]

DaveCRS4 said:

JCHill said:

This 100%.

Failing that the OEM AGM battery isn t stupidly expensive (00915089BB from Eurospares for my LP700-4) and is a DIY able job with care. There s quite a few tutorials out there as to how to go about it. I replaced mine last year for just over £300 including VAT and shipping costs. Just do plenty of research before attempting it, if you re going the DIY route, as a total loss of power can cause issues so if you re in any doubt let a dealer do it!

Yeah looks like a new battery is needed as this is dead !!

JCHill what year is yours? just checking that i'm ordering the right battery as mine is 2015 and not sure if the earlier models all had stop start (which I believe is a different battery but could be wrong)

Thanks
David

Mine s a late 2013 (63 reg) with start / stop and cylinder deactivation...neither of which I use but someone thought it might save the planet I guess? I did toy with the idea of going down the lithium route (antigravity battery), but in the end I decided to stick with OEM.

I don t believe the first cars (2011 - early 2013) had these planet-saving features so I think you re right that those may have a non-AGM battery but I could also be wrong. Check your year / model on the Eurospares site, they re pretty good at linking model years to the correct parts but if all else fails it s only about a 30 minute job to remove the front trunk to check the battery model and (with care) it can be done without removing the bonnet. Just remove the front trim to allow the truck bin to tilt forward just enough to clear the bonnet.

Hope this helps.

Edited by JCHill on Thursday 2nd October 22:10

Edited by JCHill on Thursday 2nd October 22:12

[JCHill]

DaveCRS4 said:

JCHill said:

Just FYI. From memory, air vents open when one of three conditions are met

Over 99mph
Over 35c ambient temperature
Oil temp over 110c

obviously in the UK we don t see any of those conditions! ;-)

Maybe just one ? :-)

;-)

[DaveCRS4]

Well, that was a lot easier than I expected !!

The hardest part was moving the big fat s!ag out the carcoon

Managed to get the tub out without removing the bonnet

Have a few error codes, but a reset should sort that, fingers crossed!

Appreciate the advice chaps

Dave

[JCHill]

DaveCRS4 said:

Well, that was a lot easier than I expected !!

The hardest part was moving the big fat s!ag out the carcoon

Managed to get the tub out without removing the bonnet

Have a few error codes, but a reset should sort that, fingers crossed!

Appreciate the advice chaps

Dave

Nice one! Hopefully a good few years of consistent battery power now! Just one word of advice, if you went OEM (AGM battery), make sure you use either the OEM battery tender or an AGM compatible battery tender (CTEK) as the charging program is sightly different to a standard battery (slightly higher amps if I remember correctly). I leave mine charging whenever it s not in use, regardless of how short or long it s resting up for. Keeps it fresh and starts on the button every time now.

[DaveCRS4]

JCHill said:

Nice one! Hopefully a good few years of consistent battery power now! Just one word of advice, if you went OEM (AGM battery), make sure you use either the OEM battery tender or an AGM compatible battery tender (CTEK) as the charging program is sightly different to a standard battery (slightly higher amps if I remember correctly). I leave mine charging whenever it s not in use, regardless of how short or long it s resting up for. Keeps it fresh and starts on the button every time now.

Yeah went oem and its normally plugged in after every use (CTEK)

thanks again

Dave