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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Battery chargingViews : 1688 Replies : 14Users Viewing This Thread : |
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Sep 18th, 2019, 19:49 | #11 |
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Following it being parked up for 6 days, I've been out in the car. As predicted - despite being charged for about 18 hours - the system warned of low battery power as soon as I inserted the key. However the stop/start then surprised me by becoming active in less than 5 minutes, so it seems the system was only confused about the battery charge for a very short time and soon got itself appraised of the fully charged battery status.
I'm really not sure that I need a replacement battery, although obviously a 4.5 year old battery will have lost some capacity. I believe the stop/start non-availability and low power warnings come about due to the manner in which I tend to use the car, with the battery draining significantly during the run of days that I leave it parked up. I also reckon that the system is designed to deactivate the stop/start at the merest excuse!
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Sep 19th, 2019, 08:41 | #12 |
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Stop/start works only when battery's State of Charge is above a certain threshold, cca. 80-82% SoC. If you loose more than 1-2-3% SoC overnight, battery might be due for replacement, batteries age prematurely nowadays due to start/stop and intensive charge/discharge bursts under brake energy regeneration.
Battery SoC can be displayed with app 'Car Scanner ELM OBD2', you should also display Battery Current while driving to check if alternator is working properly. FYI: battery in the car is charged up to 82-85% SoC only. |
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Sep 19th, 2019, 08:59 | #13 | |
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Surely the point of EFB technology (and more so with AGM) is to mitigate the effects of repeated stop/start and so extend the useful battery life? This doesn't seem to be playing out...
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GONE: 2015 V60 D4 181 (VEA) R-Design Lux Nav manual in black Last edited by Zebster; Sep 19th, 2019 at 09:01. |
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Sep 19th, 2019, 19:20 | #14 | |
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Lots of “pub” evidence about batteries lots of “change it after 3 years” etc load testing over a period at regular intervals may surprise you..... My stop starts works pretty much all the time but battery is 2 years old car does very few short trips but does sit for days not moving regularly. Last edited by HDAV; Sep 19th, 2019 at 19:23. |
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Sep 19th, 2019, 19:57 | #15 | |
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