30th April 2019, 09:23
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#28
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This is my second home
1.8t Tourer
Join Date: Oct 2011
Location: Tanelorn
Posts: 4,830
Thanks: 956
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Quote:
Originally Posted by COLVERT
The battery does not supply voltage to the alternator field coils !!!!
You've got your percentages and voltage figures wrong as well.
The maximum amperage from the alternator well exceeds anything the car accessories can call for. ( possibly twice that required. )
The maximum draw by the alternator ARMATURE is six amps to give an output from the field coils of 110 amps.---
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Sorry, got the armature and field coils confused there for a moment. You're still not going to get 6A (at 12v) from a flat battery though. So, no, I don't think you are going to get enough charge (ever) from an alternator running with a flat battery to start with. Who ever said that batteries were 100% efficient? 45Ah to top up 20% of a battery rated at 96Ah is not claiming 100% efficiency!
disclaimer: calculations not guaranteed to be accurate as can't be rst to get calculators out and whatnot. your mileage may vary. make your bed and lie in it, what goes around comes around... blah blah blah....
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Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk)
Where?:
https://en.wikipedia.org/wiki/Tanelorn
Mods/Retrofits:
PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors
To do:
puddle lights; 2 Din cd/nav to fit; boot release button
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