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523 iAN 
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Joined: 17-September-2005 Location: close to Loch Lomond Status: Offline Points: 1258 |
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 Topic: battery power drain?Posted: 26-May-2007 at 21:35 |
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i fitted the "cap" so as to keep my amp at top notch for powering my sub speaker, 480W amp + 1200W sub, i was running 2 amp's and 3 sub's at one point but it took up to much space in the boot and to be honest the 2 in the boot were a waste of time, you could'nt hear them unless the boot was open ive also changed the buisness unit for a high output Alpine unit picture's can be seen here: http://www.cardomain.com/ride/2130011
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2003-530i SE
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fozzymandeus
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Joined: 01-February-2006 Location: Sunny Rhyl Status: Offline Points: 607 |
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Posted: 26-May-2007 at 20:53 |
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Yeah a knackered capacitor will suddenly start to drain a battery very quickly, although I'd be surprised if it didnt blow the associated fuse...
Could you explain why you'd need a power cap for your stereo? (this intrigues me - I'm not being sarcy or anything!!) |
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Beating around the bush.
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523 iAN
Really Senior Member II
Joined: 17-September-2005 Location: close to Loch Lomond Status: Offline Points: 1258 |
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Posted: 26-May-2007 at 19:24 |
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seam's it may have been my power cap that was draining the battery, did a few check's with a volt meter this morning and found that the power cap was not holding it's own charge so for it to keep it's charge it was zapping the battery of it's power
 well here's hopeing? i left it all day and it started fine this evening 
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2003-530i SE
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bmw1066
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GOOD OLD E23 Joined: 16-January-2005 Location: West Sussex Nr Brighton Status: Offline Points: 1095 |
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Posted: 26-May-2007 at 12:08 |
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Not shour were to start its sound a big one will be worth checking the altanater as thay can discharge the battery, you coud fined out what the drain is bye concting a meter betreen the neg - and battery post - with the meter on amps good reading is 0.04 dc you can get away slightley higher with the meter like this you can remove fuses to pin point the problom. but it could be anthing.
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Mark 735 se 1982
RED BARON A E23 is for life not just for x-mas BMW e34 530 v8 Sport kit Spelling always Bad |
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523 iAN
Really Senior Member II
Joined: 17-September-2005 Location: close to Loch Lomond Status: Offline Points: 1258 |
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Posted: 26-May-2007 at 10:35 |
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Guy's anyone had a problem with the battery being drained? my car was dead yesterday so i jump started it i have a power cap fitted with my sound system and while on tic over it was reading 13.8 volt's .. 3hour's later without the engine running it read 8.6 volt's and the battery was dead again! i swapped the battery from my E30 to my E39 and it fired up, cap read: 13.9 went to check it this morning and it's dead AGAIN!! cap show's 8.5 volt's
also my E30 fired up fine so both battery's are good.
any help or info as what to check would be of a massive help Thank's Ian |
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2003-530i SE
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battery power drain?
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so i then did away with 3 sub's in favour of 1 free air infinity sub