2006 A6 3.0 Le Mans - Electrical Problem, Battery Discharging Overnight

[Deanbarbara]

Yuasa 5000 battery by any chance?

Nope, it's an Exide Excell battery

[Crasher]

They are a good battery, have you got a multimeter with a 10 amp current range and know how to do a parasitic drain test?

[luklawecki]

Yuasa 5000 battery by any chance?

I got Yuasa 5000 110ah and experience some trouble every winter when temperatures drops below 5’C.
Car is driven very little lately about 100km weekly…. So short distance every time, maybe 5-10mins at the time… so I am charging battery from under the hood terminals using 4amp slow charger…
However last Friday night I charge the battery car was driven twice over the weekend, once for about 20 mins each way and then only 1 kilometer each way and this morning battery was down to 11.6V…. Car didn’t start….
Right now have multimeter connected for parasitic drain. 3 Hours after locking the car its sitts at 0.01-0.02 at all times… first time I had left my dash cam and phone charger as well, then it was up to 0.16 which I think its still not bad….
Another clue of Google was auxiliary heater, it was set to Auto so I have that switch off now….
Crasher, do U think battery is the culprit ?

A6 BRE 2007


Update:
6 hours later Yuasa battery fully charged by slow 4amp charger…. ?
My previous battery is Bosch S5 and I put that in to a car now, fully charged… still doing parasite drain test and looks like there is no battery draining…. Going to put the Yuasa back in and leave the multimeter on overnight and check few times whats going on in the early morning when temperatures drops lower….


Update:
Yuasa battery fully charged by small charger however there is no green dot in the little window/hole…. Still in black….
Looks like battery is shot…

[luklawecki]

Right…
I got my Yuasa battery replaced under 5 years warranty…
Found the invoice for it and went to shop(Halfords). Test showed battery is „ good, recharge”
Told him its only charged yesterday, he aks me to recharge it overnight again and come back next day….
Same result next day. Gave me a new battery…
Happy days….
New battery only 2 days in the car so we see how it will perform…


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[Crasher]

The Yuasa 5000 is an absolute piece of junk, I have two on the floor in the stores ready to go back to TPS under warranty and BOTH are replacements for warranty failures!

[luklawecki]

Thanks Crasher…
My last around 3 years and last 6 months had to recharge it from time to time…
Will not buy again….


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[Crasher]

ALL we will fit now is Varta, nothing else AT ALL!

[luklawecki]

Im in Ireland, no Varta batteries around in this size… Yuasa in Halfords 150e, anything else was around 200e and Varta from 250e special orders….


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[Crasher]

Excide are good.