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+--- Thread: Alternator (/showthread.php?tid=11862)
Alternator - Jaminglish - 07-12-2020
Hi guys , my brother has a sportcross with a system which i think is just too heavy (deafening) for the car. He has fitted various capacitors etc, But the fuses keep blowing. He now wants to fit a different alternator (more amperage) so he can charge another battery in the boot is this possible? can he he not just use the same alternator to charge both batteries?
Alternator - FirebirdPhil - 07-12-2020
Caps can cause extra unnecessary strain on an electrical system - they are not for compensating for a low amp alternator. Has he tried running the system without these fitted?
Alternator - Jaminglish - 07-12-2020
FirebirdPhil Caps can cause extra unnecessary strain on an electrical system - they are not for compensating for a low amp alternator. Has he tried running the system without these fitted?
I think not...Phil. Is there an higher amp alternator for the lexus?
Alternator - toxo - 07-12-2020
Jaminglish I think not...Phil. Is there an higher amp alternator for the lexus?
That largely depends on which engine he's got...
Alternator - FirebirdPhil - 07-12-2020
Jaminglish I think not...Phil. Is there an higher amp alternator for the lexus?
I think you will find I am correct on the physics side, your alternator is trying to provide current to both your amp and trying to charge the cap at the same time, a hell of a lot harder on your entire stereo and charging system especially given the huge electrical drain the IS... has from factory.
I've re-wired systems where a cap was used to help with deep bass for a couple of seconds (at the beginning of a track), but a proper electrical system and removal of the cap was proven to be better and not for a *couple of seconds* for long sustained high volume playing. Caps generally hide the root cause of the lack of power like a failing battery or as you want a new alternator. Even just simply increasing the cable sizes to and from the Alt can help.
Caps are generally a waste of time, unless you like shiny things? - proper electrical charging is by FAR the most important part of your whole audio system.
Yes there are higher amp alts for the Lex.
Alternator - Jaminglish - 09-12-2020
Thank you guys for the response. I'll let you know how he got on..
Alternator - robsx - 12-12-2020
FirebirdPhil Caps are generally a waste of time, unless you like shiny things? - proper electrical charging is by FAR the most important part of your whole audio system.
True, capacitors are useless from the little I remember from when I cared about stereo systems.
He'd be best off getting a trickle split charge system and another battery in the boot. They use the trickle charge systems on things like caravans and the like.
http://www.ebay.co.uk/itm/12V-30AMP-SPLIT-CHARGE-RELAY-KIT-SELF-SWITCHING-/181066877016?pt=UK_Campervan_Caravan_Accessories&hash=item2a286d4858
Something along those lines. And before somebody says it, yes, you could probably piece it together for less money buying bits from all over the place.
Alternator - Sparkystav - 12-12-2020
I use one of these for my second battery:
http://www.ebay.co.uk/itm/TEC3M-12v-Auto-Split-Charge-Relay-Caravan-Relay-Self-Switching-Auto-Split-Charge-/251206770790?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a7d172066
switches on when the voltage gets to about 13.5v