8 posts tagged with battery and electrical.
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Electrical gremlins or real car problems?

My car (2012 BMW 328i xDrive Wagon E91 LCI) has two quirks: 1) battery warning after turning off the car, even after extended drives (never BEFORE starting the car) 2) brake wear warning after car has been parked in the cold for several hours (disappears after warming car up) [more inside]
posted by wutangclan on Apr 22, 2015 - 3 answers

What is the best way to keep a battery charged on a car that's not going anywhere?

How often, and for how long, should I turn over my car's engine in order to preserve the battery? [more inside]
posted by Biru on Sep 6, 2010 - 21 answers

UPS and battery reference on the large scale

I would like to learn more about large-scale UPS systems, particularly the battery strings used in traditional RBOC/Telco applications. These are the sort of beasts that use huge strings of 6V 220aH deep cycle batteries, or even large numbers of 2V 400aH batteries on very strong earthquake-resistant shelving wired up to create a 48V mega-battery. Can anyone point me to the most definitive reference materials on the subject?
posted by thewalrus on Dec 17, 2009 - 4 answers

square peg, round hole

i may have injured the electrical system on my motorcycle. [more inside]
posted by nihlton on Sep 19, 2008 - 9 answers

Battery problems: my fault or the car's?

Dead battery--is there a problem with my car? [more inside]
posted by phoenixy on Sep 13, 2008 - 12 answers

Why won't my car start?

Why won't my car start? [more inside]
posted by torpark on Aug 20, 2008 - 25 answers

Turn the radio off, you may be wasting my gas!

Do electrical devices running on your car's electrical system affect gas mileage? [more inside]
posted by Mister_A on Feb 7, 2008 - 18 answers

Battery charger for 12V power supply?

Calling electricians: can I use one of those "battery chargers" they sell at Auto Zone to power a small appliance that needs 12V? [more inside]
posted by hodyoaten on May 26, 2007 - 13 answers

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