was looking for a battery charger/maintainer that trickle charges it... some of them have switches for choosing between regular and AGM batteries... so I'm wondering which type of battery the X1 has? Thanks!
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was looking for a battery charger/maintainer that trickle charges it... some of them have switches for choosing between regular and AGM batteries... so I'm wondering which type of battery the X1 has? Thanks!
It is very similar to the CTek MXS 5.0 charger. The CTek has an AGM mode (14.7v) whereas the BMW charger has a Li-Ion mode.
For trickle charging I doubt that it matters all that much whether an AGM battery is charged at 14.4 or 14.7 volts.
SpaceSilverX1 wroteAll newer BMW's are agmis the battery under the X1's bonnet a regular battery or one of those AGM batteries?
was looking for a battery charger/maintainer that trickle charges it... some of them have switches for choosing between regular and AGM batteries... so I'm wondering which type of battery the X1 has? Thanks!
DestinationMoon! wroteNo, it’s in the front near the firewallIsn't it in the trunk? Boot for the EUs
FlashMonkey929 wroteLol! DOHNo, it’s in the front near the firewall
I just assumed it was in the back like both of the other Beemers we've owned
especially since it has charging and jumping terminals away from the battery
DestinationMoon! wroteI had assumed so too when I first got the car, but I guess because it shares the platform with Mini it’s also got similar battery placement.Lol! DOH
I just assumed it was in the back like both of the other Beemers we've owned
especially since it has charging and jumping terminals away from the battery
FlashMonkey929 wroteNow that I know where it's at, it looks like a real PIA to swap out.I had assumed so too when I first got the car, but I guess because it shares the platform with Mini it’s also got similar battery placement.
There are some fasteners- securing the nearby plastic that I'm unsure how to release
KosticKen wroteStandard procedure these days on BMWs. Should be able to register with the right type of scanner.If you swap it out it has to be reregistered:
https://www.bimmer-tech.net/blog/item/115-bmw-battery-replacement-and-registration
KosticKen wroteI think from what has been mentioned before it has a battery to start the engine separate to the EV batteries on a PHEV yes I believe so. It gets charged / conditions when the EV battery gets charged, all the electronics in there car go active when the car is charged.Hopefully they haven't changed it to make it more difficult (so only they can do it...at a price!) as the charging/regeneration profile (and probably electronics/alternator) is radically different if MHT (or PHEV?) and I presume the MHT Battery has to be registered as well.
I have asked before and got no replies. Does the PHEV still have a standard Lead/Calcium Battery?
KosticKen wroteWith all the reports of battery issues I've been monitoring the battery voltage pretty consistently with a cigarette phone charger that has a display.I have just been reading about Lead/Calcium batteries.
Having seen a significant number of U11-Battery Failures on this forum I have read that Lead/Calcium batteries are supposed to be more resilient than previous Lead-Acid/Antimony batteries at normal ambient temperature but require charging at a higher voltage (>15v). Under charging (i.e. lower voltage) can significantly reduce their life.
10 minutes after writing the above the following appeared.
https://u11.bimmerpost.com/forums/showthread.php?p=30770799
The voltage always seems lower than what you'd expect. It drops 0.3v overnight which seems like a lot. Going from 12.5v to 12.2.
The car also never has dropped below 14.7v while driving. Usually it's at 14.8 or 14.9.
Higher than any bulk rate I've ever seen before.
It was still at 14.7 , even after an hours drive with the battery having been charged fully the day before.
And was still at 14.7 for the hour drive home a few hours later. I have to look into this new battery chemistry, wasn't aware of it before
Addition: Just checked my battery voltage after moving it out from my unheated garage onto driveway (which is at 6c/42.8f) and voltmeter shows 12.2v. Nothing of concern there.
Whatever the case, the battery in my car never seems to stay at 12.7 volts and falls to 12.2 or 12.3 rapidly. I guess time will tell if it's ok
DestinationMoon! wroteWhat kind did you get? Amazon? Does it appear to be an accurate reading?With all the reports of battery issues I've been monitoring the battery voltage pretty consistently with a cigarette phone charger that has a display.
COOLGREANY wroteI've been using this Ancel BA101 battery tester for a couple of years. My other two cars are rarely driven and this battery tester is pretty accurate for testing them.(Mercedes 100Ah group 49 battery and Optima YellowTop battery)What kind did you get? Amazon? Does it appear to be an accurate reading?
It was around $50 from Amazon back then.
like this one in the pics below:
SpaceSilver.X1 wroteThanks but I'm not interested in a battery tester. I'm asking the OP for info on the cigarette phone charger/display they are using.I've been using this Ancel BA101 battery tester
COOLGREANY wroteI got this one from Amazon. Seems to work OK.What kind did you get? Amazon? Does it appear to be an accurate reading?
RNorb wroteThanks. Didn't want one too bulky so glad to hear this one works.I got this one from Amazon. Seems to work OK.
COOLGREANY wroteThere's a slew of them on Amazon. I can't vouch for accuracy but one of the 3, I own is close. I just tested them and 2 read at 11.9 and one read 12.3v. my volt meter that I trust, read 12.26.Thanks but I'm not interested in a battery tester. I'm asking the OP for info on the cigarette phone charger/display they are using.
If you get one, test it against a real volt meter. Then you can add or subtract the difference and have a good idea what the voltage actually is.
At 12.26 I again connected my Amazon-China, 7 stage, 10 amp charger.
It starts at 13 volts, 10 amps, but quickly ramped to 14.6v. and the amperage quickly dropped from 10 to 8 in about 5 minutes. It's cold in the garage about freezing and the charger was in winter mode automatically. Seeing that it wasn't going to take a lot of current for a long time, I stopped the charge.
Either the battery is defective - there seemed to be many reports of bad batteries early in the X1 production. Or this battery when cold will not hold 12.7v for long.
I have no idea why it should drop so quickly but it is.
Id not recommend charging above 15 volts without some recommendation from BMW or Varta (one BMW battery supplier) to do so. These fully sealed batteries have built in gas reclaiming systems. If charged incorrectly too much gas can be generated, overwhelming the battery and badly damaging it.
It sucks you can't actually see the battery. One sign of damage is a swollen case. Without being able to see it at all, seems like a real potential problem. I don't understand why they did this... Maybe to control heating in the summer?
DestinationMoon! wroteThanks and I agree. Being able to see the battery can head off some potential issues such as corrosion on the terminals.It sucks you can't actually see the battery. One sign of damage is a swollen case. Without being able to see it at all, seems like a real potential problem. I don't understand why they did this... Maybe to control heating in the summer?
