|
|
|
#1
|
|||
|
|||
What's your car battery's voltage after resting for 2 days.
If you leave your car off for 2 days (a weekend) without driving it, what's the average voltage of your battery after 2 days?
I also assume that your car has an alarm system and/or clock that consumes between 50 mA to 200 mA. Thanks. Eric |
#2
|
|||
|
|||
If everything is okay it should not change, but that is not a valid test of anything. Start by seeing that you have about 13.5 to 14.5 volts across the battery when you rev the engine up. If you do and the battery is draining anyway, you need to put an ammeter in series with one of the battery cables and see if there is a drain. The ammeter should not read over about 100 milliAmps.
If you have charge voltage and no excessive drain, have the battery load tested. They will do this free most places that sell batteries like Sears. If you did NOT have 13.5 to 14.5 volts with engine running the problem is probably the alternator. Pull and inspect the brush pack. If the brushes are worn down short then replace it. Hope this helps, |
#3
|
|||
|
|||
Quote:
In my van, the battery would read about 12.6 which would seem more normal. I'd say if you are getting a reading below 12.4 that you should be watching it even though in my example 12.4 seems to be normal after 6 years now.
__________________
JD |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
mad 4 days of car stripping need any parts | mattdave | Diesel Discussion | 36 | 11-22-2004 12:09 AM |
W123 versus E320 CDI | unkl300d | Diesel Discussion | 31 | 09-29-2004 09:51 PM |
nice 1969 300SEL 6.3 for sale, Portland OR | gerryvz | Mercedes-Benz Cars For Sale | 0 | 06-23-2003 06:09 AM |
1987 300E parts car SF Bay Area -- Cheap or Free if you tow it once for me | marinmbfan | Mercedes-Benz Used Parts For Sale & Wanted | 2 | 12-10-2002 02:30 AM |
I get my car back in two days!!!! | RG5384 | Diesel Discussion | 3 | 11-26-2002 07:41 AM |