Due to the nature of the lead acid battery it rapidly adopts a ghost or surface charge effectively fooling alternator regulators into falsely thinking the battery is nearly fully charged. The older the battery is the higher its internal impedance and the worse the situation is.
A vehicle alternator, whether on two or four wheels is not designed to recharge a battery and mostly is incapable of doing so. Vehicle ownership is still a task for a person who owns a battery charger and knows how and when to use it. The vehicle alternator is designed to provide current for the vehicle electrics and to keep a fully-charged battery, fully-charged.
The first stage is to charge and test the battery and the second stage is to carry out a thorough visual inspection of the vehicle charging system. The third stage is to test the performance of the alternator with appropriate test gear.
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Due to the nature of the lead acid battery it rapidly adopts a ghost or surface charge effectively fooling alternator regulators into falsely thinking the battery is nearly fully charged. The older the battery is the higher its internal impedance and the worse the situation is.
A vehicle alternator, whether on two or four wheels is not designed to recharge a battery and mostly is incapable of doing so. Vehicle ownership is still a task for a person who owns a battery charger and knows how and when to use it.
The vehicle alternator is designed to provide current for the vehicle electrics and to keep a fully-charged battery, fully-charged.
The first stage is to charge and test the battery and the second stage is to carry out a thorough visual inspection of the vehicle charging system. The third stage is to test the performance of the alternator with appropriate test gear.