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3stagevtec wrote:One thing to mention, some new vehicles are coming with a smart alternator that is ECU controlled. Under load, such as while charging your battery / running lights / AC / music etc, the ECU will raise the voltage to 13V+ to prevent discharge of the battery and to power all accessories.
When there is little to no electrical demand, the alternator's voltage could drop to as low as 12.9V, just enough to prevent the battery from discharging. At that low voltage, the parasitic losses from the alternator is kept to a minimum and fuel efficiency on the vehicle is maximized..
I noticed this in my wife's Mazda 2.. Had initially thought the alt was failing, but a mechanic friend of mine had explained it to me..
X_Factor wrote:Anyone knows a bypass for the ECU controlled charging
Ie 'ibs'
X_Factor wrote:Anyone knows a bypass for the ECU controlled charging
Ie 'ibs'
3stagevtec wrote:One thing to mention, some new vehicles are coming with a smart alternator that is ECU controlled. Under load, such as while charging your battery / running lights / AC / music etc, the ECU will raise the voltage to 13V+ to prevent discharge of the battery and to power all accessories.
When there is little to no electrical demand, the alternator's voltage could drop to as low as 12.9V, just enough to prevent the battery from discharging. At that low voltage, the parasitic losses from the alternator is kept to a minimum and fuel efficiency on the vehicle is maximized..
I noticed this in my wife's Mazda 2.. Had initially thought the alt was failing, but a mechanic friend of mine had explained it to me..
evolution7tt wrote:X_Factor wrote:Anyone knows a bypass for the ECU controlled charging
Ie 'ibs'
https://brand-x-electrical.myshopify.co ... lternators
Can’t vouch for it, but the company seems to know their stuff.
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