03-30-2020, 03:40 PM | #3 |
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The government has rightly decided that we should stay in our homes.
Probably for months. I’ve ordered a CTEK charger and I was wondering if I could charge the battery via the cigarette lighter. |
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03-30-2020, 03:44 PM | #4 | |
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I'll see if I can find a reference. |
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03-30-2020, 04:08 PM | #5 | |
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From BMW 'Battery Basics'.
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03-30-2020, 04:40 PM | #6 |
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03-31-2020, 05:42 AM | #7 |
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With the lack of running, due to covid restrictions, I’ve just hooked mine up to my battery charger. Should help when we eventually get back out and about.....
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04-03-2020, 01:41 PM | #12 | |
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Not knowing what type/make of battery I had I set the CTEK to Normal battery program This program includes ‘many AGM batteries’ The AGM option is for charging ‘most AGM batteries like Optima and Odyssey’ I hope I haven’t damaged my battery. What make of battery does BMW supply ? I’ve not looked in the boot floor. |
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04-03-2020, 04:02 PM | #13 |
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I have never used anything other than the AGM setting. Looking at the charging profile the normal setting charges at a lower voltage than the AGM setting for the ‘bulk’ period otherwise it is identical so I would think you are going to be ok.
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04-03-2020, 04:16 PM | #14 |
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Thanks for the reply.
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04-04-2020, 09:03 AM | #15 |
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BMW state no more than 14.8V for the AGM batteries.
CTEK MXS 5.0 is fine in AGM mode, 14.7V. 14.4V in normal mode will not damage the battery, alternator system is working in that range, in normal charging. |
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04-13-2020, 04:29 AM | #16 |
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I bought a CTEK MXS 5.0 and really impressed with it so fair.
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04-14-2020, 03:50 AM | #17 |
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Got an “extremely low battery” warning in the car yesterday probably due to lack or use. I therefore ordered a new battery charger that will do agm batteries as my current battery charger is not suitable for cars with start/stop batteries.
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04-14-2020, 04:09 PM | #18 |
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I've been using the CTEK charger than I use on the Nomad - just alternate it between cars every few days.
Def on AGM mode for the BMW. The battery in the boot says AGM on it.
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04-16-2020, 01:17 PM | #19 | |
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My 330i G20 stays on the driveway. Wouldn't be a fan of removing the battery. Gave the car a 20 minute on Sunday but still showing low battery.
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04-16-2020, 01:53 PM | #20 |
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Buy one of these chargers and run an extension lead out to the car. You slide the extension lead under the car, plug the charger croc clips to the terminals and place the charger under the bonnet with just the mains lead going to your extension underneath. Drop the bonnet down, lock the car and apart from the lead no one would know.
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04-18-2020, 10:52 AM | #21 |
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My CTEK MXS 5.0 arrived this afternoon and is now on and charging the battery......... all good so far.....
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04-18-2020, 11:04 AM | #22 |
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Mines been plugged in for over a week now, doing its thing while the car isn’t being used.
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