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Because they are using more power then what they are using when they are out.
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∙ 11y ago
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Why does a car battery cook when charging?
Cook as in hot or cook as in bubble? A hot battery is either faulty inside or being charged to quickly. A bubbling battery is normal if it bubbling a little bit. The charging process will separate the water into Oxygen and Hydrogen causing bubbles and the electrolyte level to lower.
Why your car battery not charging back?
charging system not charging battery with new batttery, alternator and fuel pump. what will make that happen ?
Is charging of car battery chemical change?
Yes. The charging causes a chemical change in the electrolyte of the battery.
Can you drain a car battery by charging another car battery?
only if the car your using to charge the other on is not started
Will charging a car battery without disconnecting it from the car damage the alternator?
No
Do you need to unhook battery from car before charging?
No.
Will charging a car battery in situ damage the alternator?
No
Is it safe to drive without a fan belt?
NO your car will run hot and seriously damage your motor, it will also keep from charging your battery. Suggest you take your car to a mechanic for repairs.
When idling is car battery charging?
Yes, as long as the charging system is is good working order.
Do you have to drain the car battery fully before charging it again?
No
What is the purpose of a cool down after charging a fork lift battery?
The battery is hot from charging and immediate heavy use may distort th internal plates.
Will trickle charging car battery through cigarette lighter hurt car computer?
no
